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Notes: CPS/SDS/033
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…02…CPS/SDS/033
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TRAFFIC HANDLING
DETAILED DESIGN SPECIFICATION…02…ISSUE 1…02…CAMPS
4.2.4.3 Data Flow and Control Logic ........
4.2.4.3.1 Commands from Channel Command
Queue ..........................
4.2.4.3.2 Transport Control Masks ........
4.2.4.3.3 Start Up Procedure .............
4.2.4.3.4 Stop Procedure .................
4.2.4.4 Module Specification ...............
4.2.4.4.1 TP Traffic Status Control ......
4.2.4.4.1.1 Functional Specification ...
4.2.4.4.1.2 Module Interface ...........
4.2.4.4.1.3 Module Components ..........
4.2.4.4.1.4 Data Description ...........
4.2.4.4.1.5 Module Design ..............
4.2.4.4.2 NT Traffic Status Control ......
4.2.4.4.2.1 Functional Specification ...
4.2.4.4.2.2 Module Interface ...........
4.2.4.4.2.3 Module Components ..........
4.2.4.4.2.4 Data Description ...........
4.2.4.4.2.5 Module Design ..............
4.2.4.4.3 SC Traffic Status Control ......
4.2.4.4.3.1 Functional Specification ...
4.2.4.4.3.2 Module Interface ...........
4.2.4.4.3.3 Module Components ..........
4.2.4.4.3.4 Data Description ...........
4.2.4.4.3.5 Module Design ..............
4.2.4.4.4 PTP Traffic Status Control .....
4.2.4.4.4.1 Functional Specification ...
4.2.4.4.4 PTP Traffic Status Control .....
4.2.4.4.4.1 Functional Specification ...
4.2.4.4.4.2 Module Interface ...........
4.2.4.4.4.3 Module Components ..........
4.2.4.4.4.4 Data Descriptions ..........
4.2.4.4.4.5 Module Design ..............
4.2.4.4.5 PTR Traffic Status Control .....
4.2.4.4.5.1 Functional Specification ...
4.2.4.4.5.2 Module Interface ...........
4.2.4.4.5.3 Module Components ..........
4.2.4.4.5.4 Data Description ...........
4.2.4.4.5.5 Module Design ..............
4.2.4.4.6 TP Internal Command Module .....
4.2.4.4.6.1 Functional Specification ...
4.2.4.4.6.2 Module Interface ...........
4.2.4.4.6.3 Module Components ..........
4.2.4.4.6.4 Data Description ...........
4.2.4.4.6.5 Module Design ..............
4.2.4.4.7 NT Internal Command Module .....
4.2.4.4.7.1 Functional Specification ...
4.2.4.4.7.2 Module Interface ...........
4.2.4.4.7.3 Module Components ..........
4.2.4.4.7.4 Data Description ...........
4.2.4.4.7.5 Module Design ..............
4.2.4.4.8 SC Internal Command Module .....
4.2.4.4.8.1 Functional Specification ...
4.2.4.4.8.2 Module Interface ...........
4.2.4.4.8.3 Module Components ..........
4.2.4.4.8.4 Data Description ...........
4.2.4.4.8.5 Module Design ..............
4.2.4.4.9 PTP Internal Command Module ....
4.2.4.4.9.1 Functional Specification ...
4.2.4.4.9.2 Module Interface ...........
4.2.4.4.9.3 Module Components ..........
4.2.4.4.9.4 Data Description ...........
4.2.4.4.9.5 Module Design ..............
4.2.4.4.10 TP EXTERNAL COMMAND MODULE ...
4.2.4.4.10.1 Functional Specification ..
4.2.4.4.10.2 Module Interface ..........
4.2.4.4.10.3 Module Components .........
4.2.4.4.10.4 Data Description ..........
4.2.4.4.10.5 Module Design .............
4.2.4.4.11 NT External Command Module ...
4.2.4.4.11.1 Functional Specification ..
4.2.4.4.11.2 Module Interface ..........
4.2.4.4.11.3 Module Components .........
4.2.4.4.11.4 Data Description ..........
4.2.4.4.11.5 Module Design .............
4.2.4.4.12 SC External Command Module ...
4.2.4.4.12.1 Functional Specification ..
4.2.4.4.12.2 Module Interface ..........
4.2.4.4.12.3 Module Components .........
4.2.4.4.12.4 Data Description ..........
4.2.4.4.12.5 Module Design .............
4.2.4.4.13 PTP External Command Module ..
4.2.4.4.13.1 Functional Specification ..
4.2.4.4.13.2 Module Interface ..........
4.2.4.4.13.3 Module Components .........
4.2.4.4.13.4 Data Description ..........
4.2.4.4.13.5 Module Design .............
4.2.4.4.14 PTR External Command Module ..
4.2.4.4.14.1 Functional Specification ..
4.2.4.4.14.2 Module Interface ..........
4.2.4.4.14.3 Module Components .........
4.2.4.4.14.4 Data Description ..........
4.2.4.4.14.5 Module Design .............
4.2.4.4.15 TP Timer Control Module ......
4.2.4.4.15.1 Functional Specification ..
4.2.4.4.15.2 Module Interface ..........
4.2.4.4.15.3 Module Components .........
4.2.4.4.15.4 Data Description ..........
4.2.4.4.15.5 Module Design .............
4.2.4.4.16 NT Timer Control Module ......
4.2.4.4.16.1 Functional Specification ..
4.2.4.4.16.2 Module Interface ..........
4.2.4.4.16.3 Module Components .........
4.2.4.4.16.4 Data Description ..........
4.2.4.4.16.5 Module Design .............
4.2.4.4.17 SC Timer Control Module ......
4.2.4.4.17.1 Functional Specification ..
4.2.4.4.17.2 Module Interface ..........
4.2.4.4.17.3 Module Components .........
4.2.4.4.17.4 Data Description ..........
4.2.4.4.17.5 Module Design .............
4.2.4.4.18 PTP Timer Control Module .....
4.2.4.4.18.1 Functional Specification ..
4.2.4.4.18.2 Module Interface ..........
4.2.4.4.18.3 Module Components .........
4.2.4.4.18.4 Data Description ..........
4.2.4.4.18.5 Module Design .............
4.2.4.5 Common Subpackage Data ............
4.2.4.6 Common Subpackage Procedures ......
4.2.4.7 Subpackage Interface ..............
4.2.4.7.1 THP Internal ..................
4.2.4.7.2 THP External ..................
4.2.4.4.5 P̲T̲R̲ ̲T̲r̲a̲f̲f̲i̲c̲ ̲S̲t̲a̲t̲u̲s̲ ̲C̲o̲n̲t̲r̲o̲l̲
4.2.4.4.5.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The PTR Traffic Status Control Module supplies the
PTR ̲TC ̲COROUTINE for the PTR Transport.
The following main tasks are performed:
- Transfer of a command from the Channel Command
Queue (CCQ) is initiated.
- Reception of operation from the main waiting point,
TC ̲OPSEM.
- Decoding of received operation and activation of
action related to operation.
Procedures for the following actions are included:
- 140 Identical Characters detected by ITS.
- Close Down Acknowledge from ITS.
- Input of command from Channel Command Queue (CCQ).
On the basis of this command the PTR External Command
Module is activated.
Note: This module is also used by the OCR Process
(refer section 4.2.4.4.19.
4.2.4.4.5.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PTR ̲TC ̲COROUTINE
b) PTR ̲TC ̲COROUTINE (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None The PTR ̲TC ̲COROUTINE is implemented with
an endless loop.
4.2.4.4.5.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of the PTR Traffic Status Control Module
are depicted on figure 4.2.4.4.5.3-1.
4.2.4.4.5.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structures used by this module are define
in section 4.2.3.5.
4.2.4.4.5.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
Procedures included in PTR ̲Traffic ̲Status ̲Control are
reentrant.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲T̲R̲ ̲T̲C̲ ̲C̲O̲R̲O̲U̲T̲I̲N̲E̲
(R6) C D LINK
This procedure is coroutine running under control of
the CSF COROUTINE MONITOR. The procedure is supplied
with an endless loop.
The procedure supplies the upper most control logic
of the transport control within a transport subprocess
for PTR.
The following tasks are performed:
- Init of command transfere from the channel command
queue (CCQ). Dependent on the state of the COMMAND
̲CTR ̲MASK.
- Call of decode procedure each time an operation
has been received from TC ̲OPSEM (main waiting
point for TRANSPORT CONTROL).
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲D̲E̲C̲O̲D̲E̲ ̲P̲T̲R̲ ̲T̲C̲ ̲O̲P̲E̲R̲A̲T̲I̲O̲N̲
(R4 C D POINTER TO SAVE AREA
R7 C D POINTER TO TRANSPORT PARAMS
R6 C D LINK
This procedure decodes the OP ̲TYPE of the operation
which has been stored into the save area (TRS ̲SAVE
̲OP ̲TYPE).
A call is made to a procedure taking care of the actions
related to the OP ̲TYPE.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲P̲U̲T̲ ̲P̲T̲R̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R4 C D POINTER TO OPERATION SAVE AREA
R6 C D LINK
This procedure inputs a command from the channel command
queue (CCQ). The command is received through the operation
referred to in the specified save area.
On the base of the command maintype the procedure will
activate one of the following external procedures:
- DECODE ̲PTR ̲EXTERNAL ̲COMMAND
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
(R4 C D POINTER TO OPERATION SAVE AREA
R6) C D
This procedure takes care of the actions related to
close acknowledges operations received from OTS and
its during a FINAL ̲CLOSE ̲DOWN or STOP procedure.
When the acknowledges have been received the following
actions take place:
- The I/O connection is dismantled
- Achknowledge are returned to SSC
Figure 4.2.4.4.5.3-1
PROCEDURE PTR ̲TC ̲COROUTINE
EQUIVALENCE(PARAM ̲BASE,TRP: TRANSPORT ̲PARAMETERS)
START
LOOP "Forever"
READ ̲PARAM ̲BASE
CHECK ̲INDICATOR(TRP.CONTROL ̲STATE,
PRIMARY ̲COMMAND)(CC): BOOLEAN
CC EQ TRUE?
RECEIVE ̲TRS ̲OPERATION(POOL : TRP.TRS ̲OP ̲POOL,
OP ̲TYPE :
PRIM
̲COM,
INFO :
TRP.CCQ1
̲QEL
̲ATTRIBUTES,
PRIORITY :
2)
(OPERATION) :
OK
INIT ̲COMMAND ̲TRANSFER
(QUEUE :
PTR
̲COMMAND
̲QUEUE.1,
ATTRIBUTES :
TRP.CCQ1
̲QEL
̲ATTRIBUTES,
OPERATION)
RESET ̲INDICATOR(TRP.CONTROL ̲STATE, PRIMARY ̲COMMAND)
WAIT ̲TRS ̲OPSEM (TRP.TC ̲OPSEM) "Main Waiting
Point"
(TRP.TC ̲OPERATION)
DECODE ̲PTR ̲TC ̲OPERATION
END LOOP
RETURN
Flowgram 4.2.4.4.5.5-1
4.2.4.4.6 T̲P̲ ̲I̲n̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.6.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The PT ̲INTERNAL ̲COMMAND module contains procedures
for decoding of the THP ̲INTERNAL commands received
from the Channel Command Queue (CCQ) within the TRC/POINT
TO POINT transport.
The THP ̲INTERNAL commands are generated by the AAS
or the ACS and includes the following subjects:
a) Test Reply
b) Send Test Reply
c) Self Check Received
d) Check TSN
e) Open Outging Traffic
f) Close Outgoing Traffic
g) Flash Acknowledge
h) Send Flash Acknowledge
i) Flash Message
4.2.4.4.6.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) DECODE ̲TP ̲INTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF,
SUBTYPE):
OK
DECODE ̲TP ̲INTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 Qel (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 LINK (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.6.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of TP ̲Internal Command Module are depicted
on figure 4.2.4.4.6.3-1.
4.2.4.4.6.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Data structures are defined in section 4.2.3.5.
4.2.4.4.6.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
DECODE ̲TP ̲INTERNAL ̲COMMAND : Flowgram 4.2.4.4.6.5-1
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲P̲ ̲D̲E̲C̲O̲D̲E̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure decodes the internal commands received
from the channel command queue.
For each command a call is made to specific procedure
taking care of the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲H̲E̲C̲K̲ ̲T̲S̲N̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO TSN
R6) C D LINK
The procedure is related to the TSN ̲CHECK ̲RECEIVED
command.
The TSN supplied by the command is compared with the
TSN of the message transmitted before the last outgoing
TSN reset.
If no match a report is transmitted to the supervisors
printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲L̲F̲ ̲C̲H̲E̲C̲K̲ ̲R̲E̲C̲
(R2 C D QEL REFERENCE
R3 C D FLAGS
R6) C D LINK
This procedure takes care of the actions related to
the SELF ̲CHECK ̲RECEIVED command.
The procedures checks if a SELF ADDRESSED CHANNEL CHECK
has been transmitted, i.e. if a timer has been assigned
to the answer.
If not the ASM referenced by the command is considered
as not recognized and will be sent to the supervisor
printer.
The QEL is dismantled from the channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲I̲T̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure is related to the FLASH NOTIF command.
A timeout equal to the preemption delay (defined within
the TRC ̲PTOP ̲PARAMETER) is requested from the CSF timer
monitor.
If a timeout already has been requested no new one
is requested.
If the preemption delay is equal to 0 and operation
is sent to the OTS to make it initiate preemption if
necessary.
The QEL is dismantled from the channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲E̲S̲T̲ ̲R̲E̲P̲L̲Y̲ ̲R̲E̲C̲
(R2 C D QEL REF
R4 C D POINTER TO REPLY (N)
R6) C D LINK
This procedure takes care ot the TEST ̲REPLY ̲RECEIVED
command.
If the test reply info (N) is less than 4 the following
actions take place:
- A report is sent to the supervisor printer
- If the outgoing channel is open, it will be closed
by updating the ACP ̲127 ̲CHANNEL status and the
CIRCUIT ̲CONNECTIVITY ̲TABLE. This case also includes
report and statistics generation.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲N̲D̲ ̲T̲E̲S̲T̲ ̲R̲E̲P̲L̲Y̲ ̲A̲S̲M̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO ANALYSIS RESULT (N)
R6) C D LINK
This procedure takes care of the actions related to
the SEND ̲TEST ̲REPLY command.
An operation is sent to the OTS to make it transmit
an ASM with the result (N) of the quality test performed
by AAS.
If N 4 the following actions take place:
- A report is transmitted to the supervisor printer
- If the incoming channel is open it is closed by
updating the ACP ̲127 ̲CHANNEL ̲STATUS. In this case
also reports and statistics are generated.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲F̲L̲A̲S̲H̲ ̲A̲C̲K̲ ̲R̲E̲C̲
(R2 C D QEL REFERENCE
R3 C D FLAGS
R4 C D POINTER TO TSN
R6) C D LINK
This procedure takes care of the SEND ̲FLASH ̲ACK command.
An operation is sent to the OTS to make it transmit
an ASM with the flash acknowledge.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲N̲D̲ ̲F̲L̲A̲S̲H̲ ̲A̲C̲K̲ ̲A̲S̲M̲
(R2 C D QUEL REFERENCE
R4 C D POINTER TO TSN
R6) C D LINK
This procedure takes care of the SEND FLASH ACK command.
An operation is sent to the ots to make it transmit
an ASM with flash acknowledge.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲O̲P̲E̲N̲ ̲O̲U̲T̲G̲ ̲T̲R̲A̲F̲F̲I̲C̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure takes care of the OPEN ̲OUTG ̲TRAFFIC
command.
If the outgoing channel is closed the following actions
take place:
- The channel is opened by updating the ACP ̲127
̲
CHANNEL ̲STATUS and the CIRCUIT ̲CONNECTIVITY ̲TABLE
- A report is send to the supervisor printer
- Statistics are generated (OUTG ̲CHN ̲AVAIL).
Each time this command is received an operation is
sent to OTS to make it transmit a CHANNEL ̲TEST ̲MESSAGE
(INT ̲ZBZ).
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲O̲U̲T̲G̲ ̲T̲R̲A̲F̲F̲I̲C̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure takes care of the CLOSE ̲OUTG ̲TRAFFIC
command.
If the outgoing channel is open the following actions
place:
- The channel is closed by updating the ACP ̲127
̲
CHANNEL ̲STATUS and the CIRCUIT ̲CONNECTIVITY ̲TABLE
- A report is send to the supervisor printer
- Statistics are generated (OUTG ̲CHN ̲AVAIL).
The QEL containing the command is dismantled from the
channel command queue.
Figure 4.2.4.4.6.3-1
PROCEDURE DECODE ̲TP ̲INTERNAL ̲COMMAND (MAINTYPE,
SUBTYPE)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE SUBTYPE
CHANNEL ̲OPEN ̲RECEIVED ? OPEN ̲OUTG ̲TRAFFIC
CHANNEL ̲CLOSE ̲RECEIVED ? CLOSE ̲OUTG ̲TRAFFIC
TEST ̲REPLY ̲RECEIVED ? TEST ̲REPLY
SEND ̲TEST ̲REPLY ? SEND ̲TEST ̲REPLY
̲ASM
SEND ̲FLASH ̲ACK ? SEND ̲FLASH ̲ACK ̲ASM
FLASH ̲ACK ̲RECEIVED ? FLASH ̲ACK
FLASH ̲NOTIF ? INIT ̲PREEMPTION
TSN ̲CHECK ̲RECEIVED ? CHECK ̲TSN
SELF ̲CHECK ̲RECEIVED ? SELF ̲CHECK
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
\…01…Flowgram 4.2.4.4.6.5-1
4.2.4.4.7 N̲T̲ ̲I̲n̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.7.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module supplies procedures for handling of THP
̲INTERNAL commands received from the Channel Command
Queue (CCQ) for NICS TARE Transport.
The following commands are included:
a) Channel Open Received
b) Channel Close Received
c) Test Reply Received
d) Send Test Reply
e) Send Flash Ack.
f) Flash Ack. Received
g) TSN Check Received
4.2.4.4.7.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) DECODE ̲NT ̲INTERNAL ̲COMMAND (MAINTYPE, Qel, Flage,
INF,
SUBTYPE):
OK
b) DECODE ̲NT ̲INTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.7.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of NT ̲Internal Command Module are depicted
on figure 4.2.4.4.7.3-1.
4.2.4.4.7.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Data structures are defined in section 4.2.3.5.
4.2.4.4.7.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲N̲T̲ ̲D̲E̲C̲O̲D̲E̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the internal commands received
from the channel command queue in a NICS TARE transport
subprocess.
For each command a call is made to specific procedure
taking care of the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲H̲E̲C̲K̲ ̲T̲S̲N̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO TSN
R6) C D LINK
The procedure is related to the TSN ̲CHECK ̲RECEIVED
command.
The TSN supplied by the command is compared with the
TSN of the message transmitted before the last outgoing
TSN reset.
If no match a report is transmitted to the supervisors
printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲O̲P̲E̲N̲ ̲O̲U̲T̲G̲ ̲T̲R̲A̲F̲F̲I̲C̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure takes care of the OPEN ̲OUTG ̲TRAFFIC
command.
If the outgoing channel is closed the following actions
take place:
- The channel is opened by updating the ACP ̲127
̲
CHANNEL ̲STATUS and the CIRCUIT ̲CONNECTIVITY ̲TABLE
- A report is send to the supervisor printer
- Statistics are generated (OUTG ̲CHN ̲AVAIL).
Each time this command is received an operation is
sent to OTS to make it transmit a CHANNEL ̲TEST ̲MESSAGE
(INT ̲ZBZ).
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲O̲U̲T̲G̲ ̲T̲R̲A̲F̲F̲I̲C̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure takes care of the CLOSE ̲OUTG ̲TRAFFIC
command.
If the outgoing channel is open the following actions
place:
- The channel is closed by updating the ACP ̲127
̲
CHANNEL ̲STATUS and the CIRCUIT ̲CONNECTIVITY ̲TABLE
- A report is send to the supervisor printer
- Statistics are generated (OUTG ̲CHN ̲AVAIL).
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲N̲D̲ ̲T̲E̲S̲T̲ ̲R̲E̲P̲L̲Y̲ ̲A̲S̲M̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO ANALYSIS RESULT (N)
R6) C D LINK
This procedure takes care of the SEND ̲TEST ̲REPLY command.
An operation is sent to the OTS to make it transmit
an ASM with the result (N) of the quality test performed
by AAS.
If N 4 the following actions take place:
- A report is transmitted to the supervisor printer
- If the incoming channel is open it is closed by
updating the ACP ̲127 ̲CHANNEL ̲STATUS. In this case
also reports and statistics are generated.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲E̲S̲T̲ ̲R̲E̲P̲L̲Y̲ ̲R̲E̲C̲
(R2 C D QEL REF
R4 C D POINTER TO REPLY (N)
R6) C D LINK
This procedure takes care ot the TEST ̲REPLY ̲RECEIVED
command.
If the test reply info (N) is less than 4 the following
actions take place:
- A report is sent to the supervisor printer
- If the outgoing channel is open, it will be closed
by updating the ACP ̲127 ̲CHANNEL status and the
CIRCUIT ̲CONNECTIVITY ̲TABLE. This case also includes
report and statistics generation.
The QEL containing the command is dismantled from the
channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲F̲L̲A̲S̲H̲ ̲A̲C̲K̲ ̲R̲E̲C̲
(R2 C D QEL REFERENCE
R3 C D FLAGS
R4 C D POINTER TO TSN
R6) C D LINK
This procedure is related to the SEND ̲FLASH ̲RECEIVED
command.
If the TSN from the command has been assigned a timer
in the FLASH TABLE, the timer is set idle and the QEL
related to the message is dismantled from the circuit
queue.
If the TSN is not represented in the FLASH TABLE the
ASM following the command is considered as not recognized
and will be send to the supervisor printer.
The QEL is dismantled from the channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲F̲L̲A̲S̲H̲ ̲A̲C̲K̲ ̲A̲S̲M̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO TSN
R6) C D LINK
This procedure takes care of the SEND ̲FLASH ̲ACK command.
An operation is sent to the OTS to make it transmit
an ASM with the flash acknowledge.
The QEL containing the command is dismantled from the
channel command queue.
Figure 4.2.4.4.7.3-1
PROCEDURE DECODE ̲TP ̲INTERNAL ̲COMMAND (MAINTYPE,
SUBTYPE): OK
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE SUBTYPE
CHANNEL ̲OPEN ̲RECEIVED ? OPEN ̲OUTG ̲TRAFFIC
CHANNEL ̲CLOSE ̲RECEIVED ? CLOSE ̲OUTG ̲TRAFFIC
TEST ̲REPLY ̲RECEIVED ? TEST ̲REPLY
SEND ̲TEST ̲REPLY ? SEND ̲TEST ̲REPLY
̲ASM
SEND ̲FLASH ̲ACK ? SEND ̲FLASH ̲ACK ̲ASM
FLASH ̲ACK ̲RECEIVED ? FLASH ̲ACK
TSN ̲CHECK ̲RECEIVED ? CHECK ̲TSN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
\…01…Figure 4.2.4.4.7.5-1
4.2.4.4.8 S̲C̲ ̲I̲n̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.8.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module contains procedures for handling of THP
̲INTERNAL commands received from the Channel Command
Queue (CCQ) for SCARS/CCIS.
The following commands are included:
a) Flash Notification
b) TSN check received
4.2.4.4.8.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) DECODE ̲SC ̲INTERNAL ̲COMMAND (MAINTYPE, Qel, Flage,
INF,
SUBTYPE):
OK
b) DECODE ̲SC ̲INTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.8.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of the SC ̲Internal ̲Command Module are
depicted on figure 4.2.4.4.8.3-1.
4.2.4.4.8.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Data structures are defined in section 4.2.3.5.
4.2.4.4.8.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
(Flowgram 4.2.4.4.8.5-1)
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲C̲ ̲D̲E̲C̲O̲D̲E̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the internal commands received
from the channel command queue in a SCARS/CCIS subprocess.
For each command a call is made to specific procedure
taking care of the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲H̲E̲C̲K̲ ̲T̲S̲N̲
(R2 C D QEL REFERENCE
R4 C D POINTER TO TSN
R6) C D LINK
The procedure is related to the TSN ̲CHECK ̲RECEIVED
command.
The TSN supplied by the command is compared with the
TSN of the message received before the last incoming
TSN reset.
If no match a report is transmitted to the supervisors
printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲I̲T̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure related to the FLASH ̲NOTIF command.
A timeout equal to the preemption delay (defined within
the SCARS CCIS PARAMETER) is requested from the CSF
timer monitor.
If a timeout already has been requested no new one
is requested.
If the preemption delay is equal to 0 an operation
is sent to the OTS make it initiate preemption if necessary.
The QEL is dismantled from the channel command queue.
Figure 4.2.4.4.8.3-1
PROCEDURE DECODE ̲SC ̲INTERNAL ̲COMMAND (MAINTYPE,
SUBTYPE):
OK
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE SUBTYPE
FLASH ̲NOTIF ? INIT ̲PREEMPTION
TSN ̲CHECK ̲RECEIVED ? CHECK ̲TSN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.8.5-1
4.2.4.4.9 P̲T̲P̲ ̲I̲n̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.9.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module contains procedures for handling of THP
Internal commands received from the Channel Command
Queue for PTR.
The following commands are included:
Flash Notification.
4.2.4.4.9.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) DECODE ̲PTP ̲INTERNAL ̲COMMAND (MAINTYPE, Qel, Flage,
INF, SUBTYPE): OK
b) DECODE ̲PTP ̲INTERNAL ̲COMMAND(R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.9.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of the PTP ̲INTERNAL ̲COMMAND Module are:
DECODE ̲PTP ̲INTERNAL ̲COMMAND
INIT ̲PREEMPTION
TRS ̲COMMAND ̲ERROR (External)
4.2.4.4.9.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Data structures are defined in section 4.2.3.5.
4.2.4.4.9.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲T̲P̲ ̲D̲E̲C̲O̲D̲E̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(Flowgram 4.2.4.4.9.5-1)
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the internal commands received
from the channel command queue.
For each command a call is made to specific procedure
taking care of the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲I̲T̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure is related to the FLASH ̲NOTIF command.
A timeout equal to the preemption delay (defined within
the DEDICATED ̲PUNCH ̲PARAMETER) is requested from the
CSF timer monitor.
If a timeout already has been requested no new one
is requested.
If the preemption delay is equal to 0 an operation
is sent to the OTS make it initiate preemption if necessary.
The QEL is dismantled from the channel command queue.
PROCEDURE DECODE ̲PTP ̲INTERNAL ̲COMMAND (COMMAND
̲ID)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE COMMAND ̲ID
FLASH ̲NOTIF ? INIT ̲PREEMPTION
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.9.5-1
4.2.4.4.10 T̲P̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲ ̲M̲O̲D̲U̲L̲E̲
4.2.4.4.10.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The TP ̲EXTERNAL ̲COMMAND module supplies the procedures
which executes the actions related to the THP ̲EXTERNAL
commands rceived from the Channel Command Queue (CCQ)
within the TRC/POINT TO POINT transport.
The THP ̲EXTERNAL commands are divided into groups according
to the origin:
a) SSC COMMAND : Start External Channel
Close Down
Stop Traffic
b) SUPERVISOR COMMAND : Open Incoming Traffic
Close Incoming Traffic
c) LOG ACK : Acknowledge for outg.
msg.
Log and Discontinuity
Log.
4.2.4.4.10.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) TP DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF, SUBTYPE): OK
b) TP DECODE ̲EXTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.10.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of the TP ̲EXTERNAL ̲COMMAND Module are
depicted on figure 4.2.4.4.10.3-1.
4.2.4.4.10.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
The data structures are defined in section 4.2.3.5.
4.2.4.4.10.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
All procedures within this module are reentrant.
TP ̲DECODE ̲EXTERNAL ̲COMMAND design on flowgram 4.2.4.4.10.5-1.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲P̲ ̲D̲E̲C̲O̲D̲E̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the external commands received
through the channel command queue.
For each command a specific procedure is called taking
care of the actions related to the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
(R2 C D QEL REFERENCE
R3 C D FLAGS (NOT ̲OK,OK)
R4 C D POINTER TO INF WORD
R6) C D LINK
The procedure supplies the actions related to log acknowledge.
The QEL related to the command is dismantled from the
channel command queue.
Figure 4.2.4.4.10.3-1
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲A̲R̲T̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R4 C D POINTER TO START ̲EXC ̲RECORD
R6 C D LINK
This procedure supplies the functions related to the
START ̲EXC command received from SSC.
The functions are divided into the following maintasks:
- ESTABLISH I/O CONNECTION
- READ CHANNEL PROFILE, CIRCUIT ̲PROFILE AND CHANNEL
̲
STATUS
- UPDATE CHANNEL ̲STATUS
- READ CHANNELS PER CIRCUIT
- READ CHANNEL SPEED
- REQUEST PERIODIC TIMEOUTS FROM CSF ̲TIMER ̲MONITOR
- SEND START OPERATIONS TO OTS AND ITS
- INIT OF TRANSPORT PARAMS RELATED TO TCS.
The outgoing channel status is closed. The incoming
channel status is set to the state indicated by the
value received from the ACP ̲127 ̲CHANNEL ̲STATUS table.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲O̲P̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure supplies the functions related to a
stop command received from SSC through the channel
command queue.
Operations are sent to OTS and ITS to make them stop
processing immediately.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R3 C D FLAG (CLOSE ̲DOWN ̲TYPE)
R6) C D LINK
This procedure supplies the functions which take place
when a close down command is received from SSC.
Two types of close down commands are received:
- INIT ̲CLOSE ̲DOWN: An operation is sent to OTS
and ITS to make them stop processing
as soon as the running transmission/reception
is compleeted.
- FINAL ̲CLOSE ̲DOWN: The functions are the same as
for stop channel command.
PROCEDURE TP ̲DECODE ̲EXTERNAL ̲COMMAND
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MAINTYPE
SUPERVISOR ̲THP ̲CMD?
CASE SUBTYPE
OPEN ̲FOR ̲INCOMING ̲TRAFFIC ? OPEN ̲INCOM
̲TRAFFIC
CLOSE ̲FOR ̲INCOMING ̲TRAFFIC ? CLOSE ̲INCOM
̲TRAFFIC
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
SSC ̲COMMAND?
CASE SUBTYPE
START ̲EXC ? START ̲EXTERNAL ̲CHANNEL
STOP ̲EXC ? STOP ̲EXTERNAL ̲CHANNEL
CLOSE ̲DOWN ? CHANNEL ̲CLOSE ̲DOWN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
ACK ? LOG ̲COLLECT ̲ACK
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.10.5-1
4.2.4.4.11 N̲T̲ ̲E̲x̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.11.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module supplies procedures for handling of External
Commands received from the Channel Command Queue for
NICS TARE Transport.
The following commands are included:
a) SSC COMMAND : Start External Channel
Stop External Channel
Channel Close Down
b) SUPERVISOR COMMAND : Open Incoming Traffic
Close Incoming Traffic
c) LOG ̲COLLECT ̲ACK : Acknowledge for Outg. Msg.
Log and Discontinuity Log.
4.2.4.4.11.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) NT DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF, SUBTYPE): OK
b) NT DECODE ̲EXTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.11.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of this module are depicted on figure
4.2.4.4.11.3-1.
4.2.4.4.11.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
The data structures are defined in section 4.2.3.5.
4.2.4.4.11.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The procedures included in the NT ̲External Command
Module are all reentrant.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲N̲T̲ ̲D̲E̲C̲O̲D̲E̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QEL INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
(Flowgram 4.2.4.4.11.5-1)
This procedure decodes the external commands received
through the channel command queue in NICS TARE transport
subprocess.
For each command a specific procedure is called taking
care of the actions related to the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲L̲O̲G̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
(R2 C D QEL REFERENCE
R3 C D FLAGS (NOT ̲OK,OK)
R4 C D POINTER TO INF WORD
R6) C D LINK
This procedure supplies the actions related to log
acknowledge.
The QEL related to the command is dismantled from the
channel command queue.
Figure 4.2.4.4.11.3-1
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲A̲R̲T̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R4 C D POINTER TO START ̲EXC ̲RECORD
R6 C D LINK
This procedure supplies the functions related to the
START ̲EXC command received from SSC.
The functions are divided into the following maintasks:
- ESTABLISH I/O CONNECTION
- READ CHANNEL PROFILE, CIRCUIT ̲PROFILE AND CHANNEL
̲
STATUS
- UPDATE CHANNEL ̲STATUS
- READ CHANNELS PER CIRCUIT
- READ CHANNEL SPEED
- REQUEST PERIODIC TIMEOUTS FROM CSF ̲TIMER ̲MONITOR
- SEND START OPERATIONS TO OTS AND ITS
- INIT OF TRANSPORT PARAMS RELATED TO TCS.
The outgoing channel status is closed. The incoming
channel status is set to the state indicated by the
value received from the ACP ̲127 ̲CHANNEL ̲STATUS table.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲O̲P̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure supplies the functions related to a
stop command received from SSC through the channel
command queue.
Operations are sent to OTS and ITS to make them stop
processing immediately.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R3 C D FLAG (CLOSE ̲DOWN ̲TYPE)
R6) C D LINK
This procedure supplies the functions which take place
when a close down command is received from SSC.
Two types of close down commands are received:
- INIT ̲CLOSE ̲DOWN: An operation is sent to OTS
and ITS to make them stop processing
as soon as the running transmission/reception
is compleeted.
- FINAL ̲CLOSE ̲DOWN: The functions are the same as
for stop channel command.
PROCEDURE NT ̲DECODE ̲EXTERNAL ̲COMMAND
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MAINTYPE
SUPERVISOR ̲THP ̲CMD?
CASE SUBTYPE
OPEN ̲FOR ̲INCOMING ̲TRAFFIC ?
OPEN
̲INCOM
̲TRAFFIC
CLOSE ̲FOR ̲INCOMING ̲TRAFFIC ?
CLOSE
̲INCOM
̲TRAFFIC
OTHERWISE ?
TRS
̲COMMAND
̲ERROR
END CASE
SSC ̲COMMAND?
CASE SUBTYPE
START ̲EXC ? START ̲EXTERNAL ̲CHANNEL
STOP ̲EXC ? STOP ̲EXTERNAL ̲CHANNEL
CLOSE ̲DOWN ? CHANNEL ̲CLOSE ̲DOWN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
ACK ? LOG ̲COLLECT ̲ACK
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.11.5-1
4.2.4.4.12 S̲C̲ ̲E̲x̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.12.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module contains procedures for handling of External
Commands received through the Channel Command Queue
for SCARS/CCIS Transport.
The following commands are included:
a) SSC COMMAND : Start External Channel
Stop External Channel
Channel Close Down
b) LOG ̲COLLECT ̲ACK : Acknowledge for Outg. Msg.
Log and Discontinuity Log.
4.2.4.4.12.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) SC DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF, SUBTYPE): OK
b) SC DECODE ̲EXTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.12.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of this module are depicted on figure
4.2.4.4.12.3-1.
4.2.4.4.12.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
The data structures are defined in section 4.2.3.5.
4.2.4.4.12.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The procedures included in the SC ̲External Command
Module are all reentrant.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲: (Flowgram 4.2.4.4.12.5-1)
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲C̲ ̲D̲E̲C̲O̲D̲E̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QUEUE INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the external commands received
through the channel command queue for SCAR/CCIS subprocess.
For each command a specific procedure is called taking
care of the actions related to the command.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲O̲P̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure supplies the functions related to a
stop command received from SSC through the channel
command queue.
Operations are sent to OTS and ITS to make them stop
processing immediately.
Figure 4.2.4.4.12.3-1
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲A̲R̲T̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R4 C D POINTER TO START ̲EXC ̲RECORD
R6 C D LINK
This procedure supplies the functions related to the
START ̲EXC command received from SSC.
The functions are divided into the following maintasks:
- ESTABLISH I/O CONNECTION
- READ CHANNEL PROFILE, CIRCUIT ̲PROFILE AND CHANNEL
̲
STATUS
- UPDATE CHANNEL ̲STATUS
- READ CHANNELS PER CIRCUIT
- READ CHANNEL SPEED
- REQUEST PERIODIC TIMEOUTS FROM CSF ̲TIMER ̲MONITOR
- SEND START OPERATIONS TO OTS AND ITS
- INIT OF TRANSPORT PARAMS RELATED TO TCS.
The outgoing channel status is closed. The incoming
channel status is set to the state indicated by the
value received from the ACP ̲127 ̲CHANNEL ̲STATUS table.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲C̲H̲A̲N̲N̲E̲L̲
(R3 C D FLAG (CLOSE ̲DOWN ̲TYPE)
R6) C D LINK
This procedure supplies the functions which take place
when a close down command is received from SSC.
Two types of close down commands are received:
- INIT ̲CLOSE ̲DOWN: An operation is sent to OTS
and ITS to make them stop processing
as soon as the running transmission/reception
is compleeted.
- FINAL ̲CLOSE ̲DOWN: The functions are the same as
for stop channel command.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲L̲O̲G̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
(R2 C D QEL REFERENCE
R3 C D FLAGS (NOT ̲OK,OK)
R4 C D POINTER TO INF WORD
R6) C D LINK
The procedure supplies the actions related to log acknowledge.
Validation of log acknowledge.
If LOG ̲ACK = OUT ̲VALID ̲LOG the OTS is notified.
If LOG ̲ACK = IN ̲DISC ̲LOG the ITS is notified.
The QEL related to the command is dismantled from the
channel command queue.
PROCEDURE SC ̲DECODE ̲EXTERNAL ̲COMMAND
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MAINTYPE
SSC ̲COMMAND?
CASE SUBTYPE
START ̲EXC ? START ̲EXTERNAL ̲CHANNEL
STOP ̲EXC ? STOP ̲EXTERNAL ̲CHANNEL
CLOSE ̲DOWN ? CHANNEL ̲CLOSE ̲DOWN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
ACK ? LOG ̲COLLECT ̲ACK
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.12.5-1
4.2.4.4.13 P̲T̲P̲ ̲E̲x̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.13.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module contains procedures for handling of External
Commands from the Channel Command Queue for PTP Transport.
The following commands are included:
a) SSC COMMAND : Start Device
Stop Device
Device Close Down
b) LOG ̲COLLECT ̲ACK : Acknowledge for Outg. Msg.
Log.
4.2.4.4.13.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PTP DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF, SUBTYPE): OK
b) PTP DECODE ̲EXTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.13.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of this module are depicted on figure
4.2.4.4.13.3-1.
4.2.4.4.13.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
The data structures are defined in section 4.2.3.5.
4.2.4.4.13.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The procedures included in the PTP ̲External Command
Module are all reentrant.
Design of PTP ̲DECODE ̲EXTERNAL ̲COMMAND on flowgram 4.2.4.4.13.5-1.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲ ̲P̲o̲i̲n̲t̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲I̲P̲ ̲D̲E̲C̲O̲D̲E̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QUEUE INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the external commands received
through the channel command queue.
For each command a specific procedure is called taking
care of the actions related to the command.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲L̲O̲G̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
(R2 C D QEL REFERENCE
R3 C D FLAGS (NOT ̲OK,OK)
R4 C D POINTER TO INF WORD
R6) C D LINK
The procedure supplies the actions related to log acknowledge.
The QEL related to the command is dismantled from the
channel command queue.
Figure 4.2.4.4.13.3-1
PROCEDURE PTP ̲DECODE ̲EXTERNAL ̲COMMAND
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MAINTYPE
SSC ̲COMMAND?
CASE SUBTYPE
START ̲SAD ? START ̲DEVICE
STOP ̲SAD ? STOP ̲DEVICE
CLOSE ̲DOWN ? DEVICE ̲CLOSE ̲DOWN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
ACK ? LOG ̲COLLECT ̲ACK
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.13.5-1
4.2.4.4.14 P̲T̲R̲ ̲E̲x̲t̲e̲r̲n̲a̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.14.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module supplies procedures for handling of external
commands received from the Channel Command Queue for
PTR Transport.
The following commands are included:
a) SSC COMMAND : Start Device
Stop Device
Device Close Down
Note: This module is also used by the OCR process.
4.2.4.4.14.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PTR DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE, Qel, Flags,
INF, SUBTYPE): OK
b) PTR DECODE ̲EXTERNAL ̲COMMAND (R0,R1,R2,R3,R4,R5,R7,R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 Maintype (destr.)
R1 Subtype (destr.)
R2 QEL (destr.)
R3 Flags (destr.)
R4 INF Pointer (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.14.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of this module are:
PTR ̲DECODE ̲EXTERNAL ̲COMMAND
START ̲DEVICE
STOP ̲DEVICE
DEVICE ̲CLOSE ̲DOWN
TRS ̲COMMAND ̲ERROR (External)
4.2.4.4.14.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
The data structures are defined in section 4.2.3.5.
4.2.4.4.14.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The procedures included in the PTR ̲External Command
Module are all reentrant.
Design of PTR ̲DECODE ̲EXTERNAL ̲COMMAND on flowgram 4.2.4.4.14.5-1.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲ ̲P̲o̲i̲n̲t̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲T̲R̲ ̲D̲E̲C̲O̲D̲E̲ ̲E̲X̲T̲E̲R̲N̲A̲L̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 C D MAINTYPE
R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D QEL FLAGS
R4 C D POINTER TO QUEUE INF
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
This procedure decodes the external commands received
through the channel command queue.
For each command a specific procedure is called taking
care of the actions related to the command.
PROCEDURE PTR ̲DECODE ̲EXTERNAL ̲COMMAND (MAINTYPE,
SUBTYPE)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MAINTYPE
SSC ̲COMMAND?
CASE SUBTYPE
START ̲SAD ? START ̲DEVICE
STOP ̲SAD ? STOP ̲DEVICE
CLOSE ̲DOWN ? DEVICE ̲CLOSE ̲DOWN
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
OTHERWISE ? TRS ̲COMMAND ̲ERROR
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.14.5-1
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲A̲R̲T̲ ̲D̲E̲V̲I̲C̲E̲
(R4 C D POINTER TO START ̲SAD ̲RECORD
R6 C D LINK
This procedure supplies the functions related to the
START ̲SAD command received from SSC.
The functions are divided into the following maintasks:
- ESTABLISH I/O CONNECTION
- READ DEVICE PROFILE
- SEND START OPERATIONS TO THE ITS
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲L̲O̲S̲E̲ ̲D̲E̲V̲I̲C̲E̲
(R3 C D FLAG (CLOSE ̲DOWN ̲TYPE)
R6) C D LINK
This procedure supplies the functions which take place
when a close down command is received from SSC.
Two types of close down commands are received:
- INIT ̲CLOSE ̲DOWN: An operation is sent to ITS
to make it stop processing as
soon as the running reception
is compleeted.
- FINAL ̲CLOSE ̲DOWN: The functions are the same as
for stop channel command.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲T̲O̲P̲ ̲D̲E̲V̲I̲C̲E̲
(R2 C D QEL REFERENCE
R6) C D LINK
This procedure supplies the functions related to a
stop command received from SSC through the channel
command queue.
Operations are sent to ITS to make it stop processing
immediately.
4.2.4.4.15 T̲P̲ ̲T̲i̲m̲e̲r̲ ̲C̲o̲n̲t̲r̲o̲l̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.15.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
The TP ̲TIMER ̲CONTROL module contains all the procedures
for handling the timer functions within the TRC/POINT
TO POINT transport.
The module is called each time a Timer Event is received
from the CSF Timer Monitor (through the Channel Command
Queue, CCQ).
The following functions are supplied:
a) Preemption Delay Elapsed.
b) Reset Outgoing TSN.
c) Update TP ̲TIMER ̲TABLE.
d) Timeout for incoming traffic.
e) Timeout for Self check ASM.
f) Timeout for TSN check ASM (ZID).
g) Timeout or Flash acknowledge.
The timer functions mentioned above are described in
section 4.2.4.1.4.
4.2.4.4.15.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) TP ̲TIMER ̲CONTROL (SUBTYPE, QEL, Flags)
b) TP ̲TIMER ̲CONTROL (R1, R2, R3, R7, R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R1 Subtype (destr.)
R2 Qel (destr.)
R3 Flags (destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.15.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of TP ̲TIMER ̲CONTROL are depicted on
figure 4.2.4.4.15.3-1.
4.2.4.4.15.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structures used by this module are defined
in section 4.2.3.5.
4.2.4.4.15.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
All procedures within TP ̲TIMER ̲CONTROL are reentrant
procedures.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲ ̲P̲o̲i̲n̲t̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲P̲ ̲T̲I̲M̲E̲R̲ ̲C̲O̲N̲T̲R̲O̲L̲
(R0 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D FLAGS
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
Register R0, R4, R5 are destroyed.
This procedure decodes the timeout events requested
from the CSF TIMER MONITOR.
The queue element containing the timer events is dismantled
from the channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲ ̲D̲E̲L̲A̲Y̲
(R6) C D LINK
This procedure supplies the actions related to the
situation that a requested preemption delay has elapsed.
An operation is sent to OTS to make it activate ITS
preemption procedure if necessary.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲P̲ ̲P̲E̲R̲I̲O̲D̲I̲C̲ ̲E̲V̲E̲N̲T̲
(R6) C D LINK
This procedure take care of the actions related to
a periodic timer event requested from the CSF TIMER
MONITOR.
The following maintasks are included:
- Daily reset of TSN
- UPDATING OF TIMERS IN TRS ̲TIME ̲TABLE and
FLASH ̲TABLE.
- If timeout occurs then a call is made to TP ̲TIMEOUT
̲CHECK procedure.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲P̲ ̲T̲I̲M̲E̲O̲U̲T̲ ̲C̲H̲E̲C̲K̲
(R6) C D LINK
This procedure search the TRS ̲TIMER ̲TABLE and the FLASH
̲TABLE for timeouts.
In case of timeout a branch is made to one of the following
procedures
- INCOMING ̲TIMEOUT
- SELFCHECK ̲TIMEOUT
- ZID ̲ASM ̲TIMEOUT
- TRS ̲FLASH ̲TIMEOUT
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲C̲O̲M̲I̲N̲G̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure supplies the actions related to the
timeout for incoming traffic.
An operation is sent to the OTS to make it transmit
a SELFADDRESSED CHANNEL CHECK ASM.
The action above is only executed if:
- The transport control is not waiting for a previously
transmitted selfaddressed channel check.
- Both channels shall be opened for traffic (The
OTS takes care of this test).
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲L̲F̲C̲H̲E̲C̲K̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
The procedure supplies the actions related to the timeout
for the return of a SELF CHECK ASM.
A report is transmitted to the supervisor printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲R̲S̲ ̲F̲L̲A̲S̲H̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R2 C D TSN OF FLASH MESSAGE
R3 C D QEL REFERRING TO FLASH MESSAGE
R6) C D LINK
The procedure takes care of the actions related to
timeout for flash acknowledge.
The flash msg for which the acknowledge is missing
are referred by the TSN and the QEL.
A report is transmitted to the supervisor printer and
the flash message is dismantled from the circuit queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲Z̲I̲D̲A̲S̲M̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure suplies the actions for the timeout
for a ZID ASM.
A report is transmitted to the supervisor printer.
Figure 4.2.4.4.15.3-1
PROCEDURE TP ̲TIMER ̲CONTROL (MONITOR ̲REPLY,
TIMEOUT ̲ID)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MONITOR ̲REPLY
TIMEOUT ?
CASE TIMEOUT ̲ID
TRS ̲PERIODIC ? TP ̲PERIODIC ̲EVENT
TRS ̲PREEMPTION ? PREEMPTION ̲DELAY
OTHERWISE ? TRS ̲INTERNAL ̲ERROR
(TP ̲TIMER ̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
TIMEOUT ̲CANCELLED ?
OTHERWISE ? TRS ̲INTERNAL ̲ERROR (TP ̲TIMER
̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.15.5-1
4.2.4.4.16 N̲T̲ ̲T̲i̲m̲e̲r̲ ̲C̲o̲n̲t̲r̲o̲l̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.16.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
The NT ̲Timer ̲Control Module contains all the procedures
for handling the timer functions within a NICS TARE
Transport Control.
The following functions are supplied:
a) Reset Outgoing TSN.
b) Update NT ̲TIMER ̲TABLE.
c) Timeout for incoming traffic.
d) Timeout for outgoing traffic.
e) Timeout for TSN check ASM (ZID).
f) Timeout or Flash acknowledge.
The timer functions mentioned above are described in
section 4.2.4.1.4.
4.2.4.4.16.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) NT ̲TIMER ̲CONTROL (SUBTYPE, QEL, Flags)
b) NT ̲TIMER ̲CONTROL (R1, R2, R3, R7, R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R1 Subtype (destr.)
R2 Qel (destr.)
R3 Flags )destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.16.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of NT ̲TIMER ̲CONTROL are depicted on
figure 4.2.4.4.16.3-1.
4.2.4.4.16.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structures used by this module are defined
in section 4.2.3.5.
4.2.4.4.16.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
All procedures supplied by NT ̲TIMER ̲CONTROL are reentrant
procedures.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲ ̲P̲o̲i̲n̲t̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲N̲T̲ ̲T̲I̲M̲E̲R̲ ̲C̲O̲N̲T̲R̲O̲L̲
(Flowgram 4.2.4.4.16.5-1)
(R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D FLAGS
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
Register R0, R4, R5 are destroyed.
This procedure decodes the timeout events requested
from the CSF TIMER MONITOR in a NICS TARE transport
subprocess.
The queue element containing the timer events is dismantled
from the channel command queue.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲N̲T̲ ̲P̲E̲R̲I̲O̲D̲I̲C̲ ̲E̲V̲E̲N̲T̲
(R6) C D LINK
This procedure take care of the actions related to
a periodic timer event requested from the CSF TIMER
MONITOR in a NICS TARE transport subprocess.
The following maintasks are included:
- Daily reset of TSN
- Updating of timers in TRS ̲TIMER ̲TABLE and
FLASH ̲TABLE.
If timeout occurs then a call is made to
NT ̲TIMEOUT ̲CHECK procedure.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲N̲T̲ ̲T̲I̲M̲E̲O̲U̲T̲ ̲C̲H̲E̲C̲K̲
(R6) C D LINK
This procedure search the TRS ̲TIMER ̲TABLE and the FLASH
̲TABLE for timeouts in a NICS TARE transport subprocess.
In case of timeout a branch is made to one of the following
procedures
- INCOMING ̲TIMEOUT
- SELFCHECK ̲TIMEOUT
- ZID ̲ASM ̲TIMEOUT
- TRS ̲FLASH ̲TIMEOUT
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲C̲O̲M̲I̲N̲G̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure supplies the actions related to the
timeout for incoming traffic from NICS TARE.
A report is sent to the supervisor's printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲O̲U̲T̲G̲O̲I̲N̲G̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
The procedure supplies the actions related to the timeout
for outgoing traffic.
An operation is sent to the OTS to make it transmit
a continuity message.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲Z̲I̲D̲A̲S̲M̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure suplies the actions for the timeout
for a ZID ASM.
A report is transmitted to the supervisor printer.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲R̲S̲ ̲F̲L̲A̲S̲H̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R2 C D TSN OF FLASH MESSAGE
R3 C D QEL REFERRING TO FLASH MESSAGE
R6) C D LINK
The procedure takes care of the actions related to
timeout for flash acknowledge.
The flash msg for which the acknowledge is missing
are referred by the TSN and the QEL.
A report is transmitted to the supervisor printer and
the flash message is dismantled from the circuit queue.
Figure 4.2.4.4.16.3-1
PROCEDURE NT ̲TIMER ̲CONTROL (MONITOR ̲REPLY,
TIMEOUT ̲ID
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MONITOR ̲REPLY
TIMEOUT ?
CASE TIMEOUT ̲ID
TRS ̲PERIODIC ? NT ̲PERIODIC ̲EVENT
OTHERWISE ? TRS ̲INTERNAL ̲ERROR
(NT ̲TIMER ̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
TIMEOUT ̲CANCELLED ?
OTHERWISE ? TRS ̲INTERNAL ̲ERROR (NT ̲TIMER
̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.16.5-1
4.2.4.4.17 S̲C̲ ̲T̲i̲m̲e̲r̲ ̲C̲o̲n̲t̲r̲o̲l̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.17.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The SC ̲Timer ̲Control Module supplies all the procedures
for handling the timer functions within the SCARS/CCIS
Transport Control.
The following functions are supplied:
a) Preemption delay elapsed
b) Reset Outgoing TSN.
c) Update SC ̲TIMER ̲TABLE.
d) Timeout for incoming traffic.
e) Timeout for Transaction Acknowledge.
f) Timeout for TSN check ASM (ZID).
g) Set timer for ZID ASM.
The timer functions mentioned above are described in
section 4.2.4.1.4.
4.2.4.4.17.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) SC ̲TIMER ̲CONTROL (SUBTYPE, QEL, Flags)
b) SC ̲TIMER ̲CONTROL (R1, R2, R3, R7, R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R1 Subtype (destr.)
R2 Qel (destr.)
R3 Flags )destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.17.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
The components of SC ̲TIMER ̲CONTROL are depicted on
figure 4.2.4.4.17.3-1.
4.2.4.4.17.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structures used by this module are defined
in section 4.2.3.5.
4.2.4.4.17.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
All procedures within SC ̲TIMER ̲CONTROL are reentrant
procedures.
M̲o̲d̲u̲l̲e̲ ̲E̲n̲t̲r̲y̲ ̲P̲o̲i̲n̲t̲:
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲C̲ ̲T̲I̲M̲E̲R̲ ̲C̲O̲N̲T̲R̲O̲L̲
(Flowgram 4.2.4.4.17.5-1)
(R1 C D SUBTYPE
R2 C D QEL REFERENCE
R3 C D FLAGS
R7 R POINTER TO TRANSPORT PARAMETERS
(R6) C D LINK
Register R0, R4, R5 are destroyed.
This procedure decodes the timeout events requested
from the CSF TIMER MONITOR.
The queue element containing the timer events is dismantled
from the channel command queue.
M̲o̲d̲u̲l̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲:
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲ ̲D̲E̲L̲A̲Y̲
(R6) C D LINK
This procedure suplies the actions related to the situation
that a requested preemption delay has elapsed.
An operation is sent to OTS to make it activate ITS
preemption procedure if necessary.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲C̲ ̲P̲E̲R̲I̲O̲D̲I̲C̲ ̲E̲V̲E̲N̲T̲
(R6) C D LINK
This procedure take care of the actions related to
a periodic timer event reqested from the CSF TIMER
MONITOR.
The following maintasks are included:
- Updating of timers in TRS ̲TIMER ̲TABLE and
FLASH ̲TABLE.
If timeout occurs then a call is made to
SC ̲TIMEOUT ̲CHECK procedure.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲C̲ ̲T̲I̲M̲E̲O̲U̲T̲ ̲C̲H̲E̲C̲K̲
(R6) C D LINK
This procedure search the TRS ̲TIMER ̲TABLE and the FLASH
̲TABLE for timeouts.
In case of timeout a branch is made to one of the following
procedures
- INCOMING ̲TIMEOUT
- TRANS ̲ACK ̲TIMEOUT
- ZID ̲ASM ̲TIMEOUT
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲C̲O̲M̲I̲N̲G̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure supplies the actions related to the
timeout for incoming traffic.
An operation is sent to the OTS to make it transmit
a CHANNEL CHECK MESSAGE
The action above is only executed if:
- The transport control is not waiting for transaction
acknowledge.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲T̲R̲A̲N̲S̲ ̲A̲C̲K̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
The procedure supplies the actions related to the timeout
for the return of a TRANSACTION ACKNOWLEDGE.
A report is transmitted to the supervisor printer and
the OTS is requested to retransmit the message.
P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲Z̲I̲D̲A̲S̲M̲ ̲T̲I̲M̲E̲O̲U̲T̲
(R6) C D LINK
This procedure suplies the actions for the timeout
for a ZID ASM (received at midnight).
A report is transmitted to the supervisor printer and
the next expected TSN is set to 001.
Figure 4.2.4.4.17.3-1
PROCEDURE SC ̲TIMER ̲CONTROL (MONITOR ̲REPLY,
TIMEOUT ̲ID)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MONITOR ̲REPLY
TIMEOUT ?
CASE TIMEOUT ̲ID
TRS ̲PERIODIC ? SC ̲PERIODIC ̲EVENT
TRS ̲PREEMPTION ? PREEMPTION ̲DELAY
OTHERWISE ? TRS ̲INTERNAL ̲ERROR
(SC ̲TIMER ̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
TIMEOUT ̲CANCELLED ?
OTHERWISE ? TRS ̲INTERNAL ̲ERROR (SC ̲TIMER
̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.17.5-1
4.2.4.4.18 P̲T̲P̲ ̲T̲i̲m̲e̲r̲ ̲C̲o̲n̲t̲r̲o̲l̲ ̲M̲o̲d̲u̲l̲e̲
4.2.4.4.18.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The PTP Timer ̲Control Module supplies all the procedures
for handling the timer functions within the PTP Transport
Control.
The following functions are included:
-Preemption delay elapsed
4.2.4.4.18.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PTP ̲TIMER ̲CONTROL (SUBTYPE, QEL, Flags)
b) PTP ̲TIMER ̲CONTROL (R1, R2, R3, R7, R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R1 Subtype (destr.)
R2 Qel (destr.)
R3 Flags )destr.)
R6 Link (kept)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
4.2.4.4.18.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
PTP ̲TIMER ̲CONTROL
PREEMPTION ̲DELAY
4.2.4.4.18.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structures used by PTP ̲TIMER ̲CONTROL module
are depicted in section 4.2.3.5.
4.2.4.4.18.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
All procedures supplied by PTP ̲TIMER ̲CONTROL are reentrant
procedures.
PTP ̲TIMER ̲CONTROL : Flowgram 4.2.4.4.18.5-1
PROCEDURE PTP ̲TIMER ̲CONTROL (MONITOR ̲REPLY,
TIMEOUT ̲ID)
START
SAVE ̲LINK (LINK)(PARAM ̲BASE)
CASE MONITOR ̲REPLY
TIMEOUT ?
CASE TIMEOUT ̲ID
TRS ̲PREEMPTION ? PREEMPTION ̲DELAY
OTHERWISE ? TRS ̲INTERNAL ̲ERROR
(PTP ̲TIMER ̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
TIMEOUT ̲CANCELLED ?
OTHERWISE ? TRS ̲INTERNAL ̲ERROR (PTP ̲TIMER
̲CONTROL,
TRS
̲TIMEOUT
̲ERROR,
MONITOR
̲REPLY,
TIMEOUT
̲ID)
END CASE
RESTORE ̲LINK
RETURN
Flowgram 4.2.4.4.18.5-1
4.2.4.4.19 O̲C̲R̲ ̲T̲r̲a̲f̲f̲i̲c̲ ̲S̲t̲a̲t̲u̲s̲ ̲C̲o̲n̲t̲r̲o̲l̲
4.2.4.4.19.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The OCR ̲TFC ̲CTL module supplies the OCR ̲TC ̲COROUTINE
which contains the basic logic related to transport
control for OCR.
The following main tasks are performed:
- Transfere of command from channel command queue
(CCQ) is initiated.
- Reception of operations from the MAIN ̲WAITING point,
TC ̲OPSEM.
- Decoding of received operation and activation of
action related to the operation.
The following procedures are included:
- CLOSE ̲ACKNOWLEDGE
- INPUT ̲OCR ̲COMMAND
- DECODE ̲OCR ̲TC ̲OPERATION
- OCR ̲TC ̲COROUTINE (module entry point)
4.2.4.4.19.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) OCR ̲TC ̲COROUTINE
b) OCR ̲TC ̲COROUTINE (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
R6 LINK (destr.)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
None
The module is implemented with an endless loop.
4.2.4.4.19.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
Equal to PTR Traffic Status Control, see 4.2.4.4.5
4.2.4.4.19.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
All data structure used by OCR Traffic Status Control
are defined in section 4.2.3.5.
4.2.4.4.19.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The module containing only one procedure which calls
the PTR ̲TC ̲COROUTINE defined in section 4.2.4.4.5.
Before the PTR ̲TC ̲COROUTINE is called the Queue References
for PTR (defined in the TRS ̲DATA module) are updated
with MAIN QUEUE values related to the OCR.
4.2.4.5 C̲o̲m̲m̲o̲n̲ ̲S̲u̲b̲p̲a̲c̲k̲a̲g̲e̲ ̲D̲a̲t̲a̲
Ref. Transport Subpackage Data section 4.2.3.5.
4.2.4.6 C̲o̲m̲m̲o̲n̲ ̲S̲u̲b̲p̲a̲c̲k̲a̲g̲e̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲s̲
This module contains a number of auxillary procedures
common for TRANSFER CONTROL modules. The following
functions have been implemented.
- Save ASM ̲REQUEST in fending ASM table
- Restore ASM ̲REQUEST from pending ASM table
- Send ASM request to CTS
- Init pending ASM control
- Update TRS table through TMP
- Read TRS table through TMP
- Init transfere of command from channel command
queue
- Input command from channel command queue
- Return acknowledge to supervisor
- Return acknowledge to SSC
- Generate statistics for CHANNEL AVAILABILITY
- Update channel status
- Read stop time
- Remove commands from CCQ
4.2.4.6.1 A̲S̲M̲ ̲R̲e̲q̲u̲e̲s̲t̲ ̲H̲a̲n̲d̲l̲i̲n̲g̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲E̲N̲D̲ ̲A̲S̲M̲
(R0 C D TRS ̲ASM ̲TYPE
R1 C K ASM ̲INFO
R5 D
R7 R PRINTER TO TRANSPORT PARAMETERS
R6) LINK
This procedure sends a specific ASM ̲TRANSMISSION ̲REQUEST
to the OTS.
If a previous ASM ̲TRANSMISSION ̲REQUEST has not yet
been acknowledged the new one is inserted into the
pending ASM table.
E̲x̲p̲o̲r̲t̲ ̲p̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲S̲A̲V̲E̲ ̲A̲S̲M̲
(R0 C K TRS ̲ASM ̲TYPE
R1 C K ASM INFO
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure inserts an ASM ̲TRANSMISSION ̲REQUEST
into the PENDING ASM TABLE:
Fatal error: No more room for pending ASM
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲S̲T̲O̲R̲E̲ ̲A̲S̲M̲
(R0 C D TRS ̲ASM ̲TYPE
R1 C K ASM ̲INFO
R5 D
R7 R PRINTER TO TRANSPORT PARAMETERS
R6) LINK
ERROR ̲OK
The procedure restores an ASM ̲TRANSMISSION ̲REQUEST
from the pending ASM table.
EXITS: ERROR - NO ASM PENDING
OK - PENDING ASM AVAILABLE
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲I̲T̲ ̲P̲E̲N̲D̲I̲N̲G̲ ̲A̲S̲M̲
(R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6 C D LINK
This procedure will initialize the pending ASM control
within running subprocess.
4.2.4.6.2 T̲a̲b̲l̲e̲ ̲A̲c̲c̲e̲s̲s̲ ̲T̲h̲r̲o̲u̲g̲h̲ ̲T̲M̲P̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲U̲P̲D̲A̲T̲E̲ ̲T̲R̲S̲ ̲T̲A̲B̲L̲E̲
(R0 C D TABLE ID
R1 C D POINTER TO FIELDS
R2 C D WRITE MASK
R3 C D PRIMARY KEY
R4 C D POINTER TO UPDATE PARAMS (SEE TCS BELOW)
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6 C D LINK
This procedure contains a WAITING ̲POINT.
The procedure updates a specified no. of fields within
a record of a specified TMP TABLE.
The fields are indicated by a mask.
The record is indicated by a PRIMARY KEY.
The procedure is intended for updating the following
tables:
T̲A̲B̲L̲E̲ ̲I̲D̲ P̲R̲I̲M̲A̲R̲Y̲ ̲K̲E̲Y̲
ACP ̲127 ̲CHANNEL ̲TABLE LOGICAL ̲CHANNEL ̲NO
CIRCUIT ̲CONNECTIVITY ̲TABLE LOGICAL ̲CIRCUIT ̲NO
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲A̲D̲ ̲T̲R̲S̲ ̲T̲A̲B̲L̲E̲
(R0 C D TABLE ID
R1 C D POINTER TO AREA TO HOLD RECORD
R2 C D SIZE OF RECORD
R3 C D PRIMARY KEY
R4 C D POINTER TO SEARCH ̲PARAMS (SEE TCS BELOW)
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6 C D LINK
This procedure contains a WAITING ̲POINT.
The procedure reads a record from a table through TMP.
The procedure only reads the record specified by a
primary key of type: INTEGER.
The procedure is intended for reading from the following
tables:
T̲A̲B̲L̲E̲ ̲I̲D̲ P̲R̲I̲M̲A̲R̲Y̲ ̲K̲E̲Y̲
DEVICE ̲TABLE LOGICAL ̲DEVICE ̲NO
CHANNEL ̲PROFILE ̲TABLE LOGICAL ̲CHANNEL ̲NO
ACP ̲127 ̲CHANNEL ̲TABLE LOGICAL ̲CHANNEL ̲NO
CIRCUIT ̲TABLE LOGICAL ̲CIRCUIT ̲NO
CIRCUIT ̲CONNECTIVITY ̲TABLE LOGICAL ̲CIRCUIT ̲NO
LTUX ̲LINE ̲TABLE LTUX ̲LINE ̲NO(FROM PORT
̲ID)
LTU ̲LINE ̲TABLE LTU ̲LINE ̲NO(FROM PORT
̲ID)
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲A̲D̲ ̲C̲H̲A̲N̲N̲E̲L̲ ̲T̲A̲B̲L̲E̲
(R6) C D LINK
All registers are destroyed.
This procedure is intended to be called after a start
up command from SSC.
This procedure will read the followin tables through
TMP:
- CHANNEL PROFILE
- ACP ̲127 ̲CHANNEL ̲STATUS
- CIRCUIT ̲PROFILE
- CHANNEL ̲PR ̲CIRCUIT FROM CIRCUIT ̲CONNECTIVITY ̲TABLE
- CHANNEL SPEED FROM LTUX ̲LINE ̲TABLE/LTU ̲LINE ̲TABLE
To read the CHANNELS ̲PR ̲CIRCUIT and speed the procedure
makes use of the data structure OUT ̲EMF ̲BUFFER within
the running subprocess.
4.2.4.6.3 C̲h̲a̲n̲n̲e̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲A̲c̲c̲e̲s̲s̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲I̲T̲ ̲C̲O̲M̲M̲A̲N̲D̲ ̲T̲R̲A̲N̲S̲F̲E̲R̲E̲
(R0 C D POINTER TO QEL ATTRIBUTES
R1 C D POINTER TO QUEUE REFERENCE
R2 C D OPERATION TYPE
R3 C D PRIORITY FOR OPERATION
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure contains a WAITING ̲POINT.
The procedure initiates the transfere of a command
from specified channel command queue.
The answer is associated to TC ̲OPSEM of the running
subprocess (MAIN ̲WAITING point for transport control).
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲I̲N̲P̲U̲T̲ ̲T̲R̲S̲ ̲C̲O̲M̲M̲A̲N̲D̲
(R0 R MAINTYPE
R1 R SUBTYPE
R2 R QEL REFERENCE
R3 R FLAGS
R4 R POINTER TO INF
R5 C K POINTER TO OPERATON RELATED TO COMMAND(QEL)
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C C LINK
This procedure contains a WAITING ̲POINT
The procedure inputs a command from channel command
queue indicated by an operation.
Maintype, Subtype, Flags and INF ̲POINTER are extracted
from QEL attributes and returned in registers together
with the QEL ̲REFERENCE related to command.
The operation is returned to TRS ̲OP ̲POOL of the running
subprocess.
QEL ref is saved into transport parameters.
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲M̲O̲V̲E̲ ̲T̲R̲S̲ ̲C̲O̲M̲M̲A̲N̲D̲S̲
(SUBQUEUE : TRS ̲SUBQUEUE
R0 D
R1 D
R2 D
R3 D
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This pocedure will remove all commands from the channel
commmand queue.
4.2.4.6.4 C̲h̲a̲n̲n̲e̲l̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲A̲c̲k̲n̲o̲w̲l̲e̲d̲g̲e̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲T̲U̲R̲N̲ ̲S̲S̲C̲ ̲A̲C̲K̲
(R0 C D QEL ̲REFERENCE
R1 C D SSC ̲RESPONSE TYPE
R2 D
R3 D
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure returns an acknowledge to SSC as a reply
for the commands:
- START ̲EXC
- STOP ̲EXC
- START ̲SAD
- STOP ̲SAD
- CLOSE ̲DOWN
The QEL related to the command is dismantled from CCQ.
Interface: CPS/ICD/009 4.2.1.4.9
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲T̲U̲R̲N̲ ̲S̲S̲C̲ ̲A̲C̲K̲
(R0 C D QEL ̲REFERENCE
R1 C D SUBTYPE OF COMMAND
R2 C D REPLY RESULT (ERROR ̲OK)
R3 D
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure returns an acknowledge to the supervisor
as a reply for the commands:
- OPEN FOR INCOMING TRAFFIC
- CLOSE FOR INCOMING TRAFFIC
The QEL related to the command is dismantled from CCQ.
Intercace: CPS/ICD/009 5.2.2.17
4.2.4.6.5 C̲h̲a̲n̲n̲e̲l̲ ̲S̲t̲a̲t̲u̲s̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲U̲P̲D̲A̲T̲E̲ ̲C̲H̲A̲N̲N̲E̲L̲ ̲S̲T̲A̲T̲U̲S̲
(R1 C D TRS ̲INPUT ̲OUTPUT
R2 C D CLOSED OPEN
R7 R POINTER TO TRANSPORT PARAMS
R6) C D LINK
Reg. R0, R3, R4, R5 are destroyed.
This procedure will update the channel status for input
and output.
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲C̲H̲N̲ ̲A̲V̲A̲I̲L̲ ̲S̲T̲A̲T̲
(R0 D
R1 C D INPUT ̲OUTPUT
R2 C D CLOSED ̲OPEN
R3 D
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure generates statistics related to CHANNEL
AVAILABILITY.
Interface: CPS/ICD/009 3.3
4.2.4.6.6 C̲h̲a̲n̲n̲e̲l̲ ̲S̲t̲o̲p̲ ̲T̲i̲m̲e̲
E̲x̲p̲o̲r̲t̲ ̲P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲R̲E̲A̲D̲ ̲S̲T̲O̲P̲ ̲T̲I̲M̲E̲
(R0 D
R1 D
R2 D
R3 D
R4 D
R5 D
R7 R POINTER TO TRANSPORT PARAMETERS
R6) C D LINK
This procedure reads the STOP ̲TIME to be used in transport
subprocess during a START ̲UP:
If the TRS ̲INIT ̲INDICATOR is true the stop time is
taken from the system parameter OLD ̲CLOCK ̲PARAMETER.
If the TRS ̲INIT ̲INDICATOR is false the stop time is
taken from the DATE ̲TIME within the transport parameters.
The TRS ̲INIT ̲INDICATOR is set to false at return.
4.2.4.7 S̲u̲b̲p̲a̲c̲k̲a̲g̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
4.2.4.7.1 T̲H̲P̲ ̲I̲n̲t̲e̲r̲n̲a̲l̲
a) A̲A̲S̲ ̲t̲o̲ ̲T̲C̲S̲
Flash Notif to PTP.
(ref. CPS/ICD/009, section 5.6.2.2)
Commands to SCARS/CCIS
(ref. CPS/ICD/009, section 5.6.2.3 and 5.6.2.4)
Commands to TRC/P TO P
(ref. CPS/ICD/009, section 5.6.2.5 and 5.6.2.6)
Commands to NICS TARE
(ref. CPS/ICD/009, section 5.6.2.7 and 5.6.2.8)
b) A̲C̲S̲ ̲t̲o̲ ̲T̲C̲S̲
Flash Notif
(ref. CPS/ICD/009, section 5.6.4.3)
4.2.4.7.2 T̲H̲P̲ ̲E̲x̲t̲e̲r̲n̲a̲l̲
a) S̲S̲C̲ ̲t̲o̲ ̲T̲C̲S̲
Start, Close Down and stop commands.
(ref. CPS/ICD/009, section 4.2.1.4.1 and 4.2.1.4.2)
b) T̲C̲S̲ ̲t̲o̲ ̲S̲S̲C̲
Command Acknowledge
(ref. CPS/ICD/009, section 4.2.1.4.2 and 4.2.1.4.4)
c) T̲E̲P̲ ̲t̲o̲ ̲T̲C̲S̲
Supervisor Commands
(ref. CPS/ICD/009, section 5.2.1.6 and 5.2.1.7)
d) T̲C̲S̲ ̲t̲o̲ ̲T̲E̲P̲
Supervisor Command Acknowledge
(ref. CPS/ICD/009, section 5.2.2.17)
Unknown ASM to Supervisor Printer
(ref. CPS/ICD/009, section 5.2.2.11)
Reports to Supervisor Printer
(ref. CPS/ICD/009, section 5.2.2.12)
e) T̲C̲S̲ ̲t̲o̲/̲f̲r̲o̲m̲ ̲L̲O̲G̲
Discontinuity Log.
(ref. CPS/ICD/009, section 5.4.2.3)
Note that the discontinuity log information is
collected and stored into a record by the ITS.
Outgoing Log.
(ref. CPS/ICD/009, section 5.4.2.4 and 5.4.2.5)
Note that the outgoing log information is collected
and stored into a record by the OTS.
Log Acknowledge
(ref. CPS/ICD/009, section 5.4.1.2, 5.4.1.3, 5.4.1.4.
