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Purchasing and Contracting Office
Communications Implementation Branch
B-7010 SHAPE
B̲e̲l̲g̲i̲u̲m̲
Att.: Mr. Paul F. Shey,
S̲H̲A̲P̲E̲ ̲C̲o̲n̲t̲r̲a̲c̲t̲i̲n̲g̲ ̲O̲f̲f̲i̲c̲e̲r̲ GJ/vhn/LET/0101
1981-03-27
cc.: Lt. Col. Manfred Stoltz,
C̲A̲M̲P̲S̲ ̲P̲r̲o̲g̲r̲a̲m̲ ̲M̲a̲n̲a̲g̲e̲r̲
Gentlemen,
Subject: TRC/POINT-TO-POINT CONNECTION INTERFACE, document C̲P̲S̲/̲I̲C̲D̲/̲0̲0̲7̲,̲
̲i̲s̲s̲u̲e̲ ̲1̲.̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
Ref: CAMPS Log No. 138, dated 6th February, 1981
a) Please find enclosed CR's answers to referenced telex
concerning comments and discrepancies to the TRC, Point-to-Point
Connection interface.
DN 1. (accepted) "Channel check" will be changed to
read "Continuity Check".
DN 2. accepted "FL 12c" will be changed to read
"FL 12g"
DN 3. accepted "SER NO" will be changed to read "SSN"
and "DTG" will be changed to read "TOF".
DN 4. accepted The first section of 5.2 will be changed
to read:
"In the case of reception of more than
140 consecutive identical characters
on the same channel, the message shall
be terminated as specified in CPS/230/ICD/0003
para. 4.2.2.8 and a warning report
shall be forwarded to the Supervisor
as indicated by CPS/230/ICD/003 para
4.2.2.4."
DN 5. (accepted) "ZBC (sp)" will be changed to read
"ZBC1 (sp)". There is no need to specify
whether it is a "mark" or a "space",
which is transmitted uncontrolled.
DN 6. accepted "EOFT" will be changed to "EOTF".
DN 7. see answer to DN 1.
DN 8. accepted the document will be updated as recommended.
See answer to DN 9.
DN 9. accepted section 5.4 will be rewritten to the
following:
5.4 C̲O̲N̲T̲I̲N̲U̲I̲T̲Y̲ ̲C̲H̲E̲C̲K̲
The continuity of traffic is checked by two meassures:
- Self addressed channel check message.
- TI continuity check (discrepancy in the TI).
CAMPS shall on each outgoing open channel transmit
to TRC or via Point-to-Point connection a self-addressed
channel check message.
On each outgoing open channels CAMPS shall expect a
self-addressed channel check message from TRC or via
Point-to-Point connection.
CAMPS shall forward an incoming abbreviated service
message, which describes traffic discontinuity on the
corresponding outgoing channel, to the Supervisor.
CAMPS shall on each incoming message check the sequence
of the Transmission Serial Number (TSN) in the Transmission
Identification (TI) of FL1 in order to ensure the continuity
of traffic per channel.
5.4.1 O̲u̲t̲g̲o̲i̲n̲g̲ ̲S̲e̲l̲f̲-̲a̲d̲d̲r̲e̲s̲s̲e̲d̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲h̲e̲c̲k̲ ̲M̲e̲s̲s̲a̲g̲e̲
CAMPS shall transmit a self-addressed channel check
message on the corresponding outgoing channel, when
no transmission has been received on an open incoming
channel for a period of 30 minutes (or as determined
by the Supervisor).
CAMPS shall expect a self-addressed channel check message
back within 15 minutes counted from (EOTF) on the corresponding
incoming channel.
If the message is not received within this time of
period, then a warning report shall be forwarded to
the supervisor.
Automatic transmission of a self-addressed channel
check message is disabled, when either one or both
of a corresponding set of channels are "closed".
The format of the self-addressed channel check for
transmission on outgoing channels is:
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(CAMPS RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
CHANNEL CHECK(EOLF)
(EOTF)
5.4.2 I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲S̲e̲l̲f̲-̲a̲d̲d̲r̲e̲s̲s̲e̲d̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲h̲e̲c̲k̲ ̲M̲e̲s̲s̲a̲g̲e̲
When CAMPS receives a channel check message self-addressed
to a TRC or a Point-to-Point connected station, then
CAMPS shall transmit the message back to the transmitting
station via the corresponding outgoing channel.
The format of the self-addressed channel check message
is:
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
CHANNEL CHECK (EOLF)
(EOTF)
5.4.3 T̲I̲ ̲C̲o̲n̲t̲i̲n̲u̲i̲t̲y̲ ̲C̲h̲e̲c̲k̲ ̲o̲n̲ ̲O̲u̲t̲g̲o̲i̲n̲g̲ ̲M̲e̲s̲s̲a̲g̲e̲
The responsibility for the continuity of Transmission
Serial Numbers (TSN) rests with the distant receiving
TRC's or P-to-P stations. Any discrepancies in the
TSN may cause a transmission of an abbreviated service
message, which, when received by CAMPS, will be forwarded
to the Supervisor.
5.4.4 T̲I̲ ̲C̲o̲n̲t̲i̲n̲u̲i̲t̲y̲ ̲C̲h̲e̲c̲k̲ ̲o̲n̲ ̲I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲M̲e̲s̲s̲a̲g̲e̲
CAMPS shall automatically check the sequence of Transmission
serial numbers per incoming channel. Discrepancies
shall be actioned as specified in the SRS para. 3.2.2.1.
DN 10 accepted See answer to DN 9.
DN 11 accepted See answer to DN 9.
DN 12 accepted See answer to DN 9.
DN 13 partly accepted. CR will accept to generate and transmit
a Channel Number Reset message, though
it is a new requirement. But CR will
not accept automatic generation and
detection of "ZIC" abbreviated service
message. It is up to the Supervisor
and Supervisor's assistant to take
care of these "ZIC" messages. Section
5.5 will be written as follows:
5.5 C̲H̲A̲N̲N̲E̲L̲ ̲N̲U̲M̲B̲E̲R̲ ̲R̲E̲S̲E̲T̲
Incomming and outgoing is as seen from CAMPS.
5.5.1 I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
CAMPS shall recognize the following abbreviated service
message on any incoming channel.
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC, P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZID(TI of previous message)(EOLF)
(EOTF)
CAMPS shall check the Transmission Serial Number (TSN)
and shall revert the number of the respective channel
to ONE directly after the receipt of the ZID ASM, irrespective
of either the TSN is in sequence or not.
In case of a TSN mismatch, a warning report shall be
forwarded to the Supervisor.
If on channels specified by the Supervisor, the ZID
ASM does not arrive within a period starting at 23:45
hours and ending at 00:15 hours (GMT) a warning shall
be sent to the Supervisor.
5.5.2 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
On outgoing channels specified by the Supervisor, CAMPS
shall automatically generate at 23:59 hours (GMY) the
following ASM:
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC, P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZID(TI of last transmitted message)(EOLF)
(EOTF)
This ASM shall bear the Transmission Serial Number
001.
DN 14 (accepted) Section 5.6 will be re-rewritten
to read as follows. (The rewritten
section is based on the suggested
changes attached to the DN.)
5.6 C̲H̲A̲N̲N̲E̲L̲ ̲C̲L̲O̲S̲I̲N̲G̲,̲ ̲O̲P̲E̲N̲I̲N̲G̲ ̲A̲N̲D̲ ̲T̲E̲S̲T̲I̲N̲G̲
It shall be possible to close, (re) open and test any
channel either by initiation of CAMPS or by TRC/P-to-P
connected stations. The sequence is specified for incoming
and outgoing channels, where incoming and outgoing
is defined as seen from CAMPS.
For message sequence see the examples in fig. 5.6-1
to 5.6-6, where channel 1 is the CAMPS incoming and
channel 2 is the corresponding CAMPS outgoing channel
from and to TRC/P-to-P stations.
The figures show the channel closing, opening and testing
sequences in 6 seperate and independent CAMPS actions.
5.6.1 G̲e̲n̲e̲r̲a̲l̲
5.6.1.1 C̲o̲n̲t̲r̲o̲l̲l̲i̲n̲g̲ ̲A̲u̲t̲h̲o̲r̲i̲t̲y̲
The CAMPS system shall be responsible for closing,
opening and testing of outgoing channels only (Initiated
by the distant station)
The Supervisor has the responsibility for initiating
opening and closing of incoming channels only.
5.6.1.2 D̲e̲f̲i̲n̲i̲t̲i̲o̲n̲
A connection to a TRC station or a P-to-P station consists
always of a pair of channels, i.e. corresponding outgoing
and incoming channels.
A channel shall be considered to be closed when the
channel status in the Channel Contol Table is set to
"closed" condition.
A channel shall be considered to be opened when the
channel status in the Channel Control Table is reset
from "Closed" condition.
An incoming channel is considered under test condition
covered by the time starting whith the transmission
of a QRV ASM and transmission of a ZBZ5 ASM on the
corresponding outgoing channel. An outgoing channel
is considered under test condition covered by the time
starting with the receipt of a QRV ASM and the receipt
of a ZBZ4 or ZBZ5 ASM on the corresponding incoming
channel.
5.6.1.3 C̲o̲n̲s̲t̲r̲a̲i̲n̲t̲s̲
Automatic detection and recognition of special abreviated
service messages will be limited to detection and check
of the operating prosign only except for the INT ZBZ
ASM, where the test text also will be validated.
Channel closing, opening and testing ASM shall not
change the procedure for the serial number generation
on outgoing channel and the serial number checking
on incoming channels.
5.6.2 I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲,̲ ̲O̲p̲e̲n̲i̲n̲g̲ ̲a̲n̲d̲ ̲T̲e̲s̲t̲i̲n̲g̲
5.6.2.1 I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲
The Supervisor shall initiate the automatic generation
of a QRT ASM for transmission on the corresponding
outgoing channel.
CAMPS shall automatically set an incoming channel "closed"
when on the correspondent outgoing channel a QRT ASM
is transmitted. All later arriving messages will be
processed as the channel was open.
Format of the QRT ASM
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QRT(sp)(S&CD)(sp)(9xA)(EOLF)
(EOTF)
Note: (9xA) implies up to 9 character close channel
amplifier.
5.6.2.2 I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲O̲p̲e̲n̲i̲n̲g̲
The Supervisor shall initiate the automatic generation
of an QRV ASM on the corresponding outgoing channel.
Format of the QRV ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QVR(sp)(S&CD)(EOLF)
(EOTF)
CAMPS shall automatically reset the incoming channel
from "closed" condition, when on the corresponding
outgoing channel a QRV ASM is transmitted.
All messages received on the (re) opened incoming channel
shall be checked as specified in the SRS para. 3.2.2.1.
5.6.2.3 I̲n̲c̲o̲m̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲T̲e̲s̲t̲i̲n̲g̲
After transmission of the QRV ASM as specified above,
Camps may receive a TEST MESSAGE (INT ZBZ ASM)
Format of the TEST MESSAGE
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
TEST(sp)THE(sp)QUICK(sp)BROWN(sp)FOX(sp)JUMPS(sp)OVER(sp)THE(sp)LAZY(sp)DOG(EOLF)
1234567890(sp)RYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYR(EOLF)
INT(sp)ZBZ(EOLF)
(EOTF)
CAMPS shall automatically analyze the TEST MESSAGE
and, depending on the quality of the incoming test,
respond as follows:
a) T̲e̲s̲t̲ ̲M̲e̲s̲s̲a̲g̲e̲ ̲C̲o̲r̲r̲e̲c̲t̲
- Automatic generation and transmission of a ZBZ5
ASM
Format of the ZBZ5 ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZBZ5(EOLF)
(EOTF)
b) T̲e̲s̲t̲ ̲M̲e̲s̲s̲a̲g̲e̲ ̲G̲a̲r̲b̲l̲e̲d̲
- Warning report to Supervisor.
- Transmission of ZBZ1 ASM
- Set incoming channel "closed".
The re-opening of the channel shall start again
with the generation of a QRV ASM, initiated by
the supervisor.
Format of a ZBZ1 ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZBZ1(EOLF)
(EOTF)
5.6.3 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲,̲ ̲O̲p̲e̲n̲i̲n̲g̲ ̲a̲n̲d̲ ̲T̲e̲s̲t̲i̲n̲g̲
5.5.3.1 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲
CAMPS shall automattically set an outgoing channel
"closed" when a QRT ASM is detected on the corresponding
incoming channel, and shall forward a report to the
supervisor. CAMPS shall not transmit messages except
for QRT, QRV, or ZBZ ASM on a closed channel.
Format of the QRT ASM
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QRT(sp)(S&CD)(sp)(9xA)(EOLF)
(EOTF)
Note: (9xA) implies up to 9 character close channel
amplifier.
5.6.3.2 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲O̲p̲e̲n̲i̲n̲g̲
CAMPS shall automatically reset a "closed" channel
when a QRV ASM is detected on the corresponding incoming
channel, and forward a report to the Supervisor.
Format of the QRV ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QRV(sp)(S&CD)(EOLF)
(EOTF)
5.6.3.3 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲T̲e̲s̲t̲i̲n̲g̲
After the receipt of the QRV ASM as specified above,
CAMPS shall automatically generate and transmit a TEST
MESSAGE (INT ZBZ ASM) on the corresponding outgoing
channel.
Format of the TEST MESSAGE
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
TEST(sp)THE(sp)QUICK(sp)BROWN(sp)FOX(sp)JUMPS(sp)OVER(sp)THE(sp)LAZY(sp)DOG(sp)(EOLF)
1234567890(sp)RYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYR(EOLF)INT(sp)ZBZ(EOLF)
(EOTF)
After transmission of the TEST MESSAGE, CAMPS may receive
an ZBZ(N) ASM on the corresponding incoming channel,
where (N) is a numerical suffix (1 to 5), indicating
the printing acceptability of the test. The incoming
ZBZ(N) ASM indicates one out of two possible conditions:
a) I̲m̲c̲o̲m̲i̲n̲g̲ ̲Z̲B̲Z̲4̲ ̲o̲r̲ ̲Z̲B̲Z̲5̲ ̲(̲T̲E̲S̲T̲ ̲C̲O̲R̲R̲E̲C̲T̲)̲
b) I̲n̲c̲o̲m̲i̲n̲g̲ ̲Z̲B̲Z̲1̲,̲ ̲2̲ ̲o̲r̲ ̲3̲ ̲A̲S̲M̲ ̲(̲T̲E̲S̲T̲ ̲G̲A̲R̲B̲L̲E̲D̲)̲
- Warning report to Supervisor.
- Set outgoing channel "closed"
- Stop transmission.
The re-opening of the channel shall start again
with the receipt of a QRV ASM.
Format of a ZBZ(N) ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(SSN)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QRV(sp)(S&CD)(EOLF)
(EOTF)
I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲
CAMPS TRC/P-to-P
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ channel 1
̲s̲t̲a̲t̲u̲s̲ ̲1̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
closed
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ incoming
QRT ASM channel 2
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
outgoing
1) Supervisor initiate close of incoming channel.
2) System transmit QRT ASM on the outgoing channel
and set channel status to "closed" for incoming
channel.
Figure 5.6-1
I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲O̲p̲e̲n̲i̲n̲g̲
CAMPS TRC/P-to-P
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ channel 1
̲s̲t̲a̲t̲u̲s̲ ̲1̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
open
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ incoming
QRT ASM channel 2
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
outgoing
1) Supervisor initiate opening of incoming channel.
2) System transmit QRV ASM on the outgoing channel
and reset channel status to "open" for incoming
channel.
Figure 5.6-2
I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲T̲e̲s̲t̲i̲n̲g̲
CAMPS TRC/P-to-P
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
status
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ INT ZBZ ASM
closed/
open
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
a) ZBZ5 ASM ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
or
b) ZBZ1 ASM
1. When detecting INT ZBZ ASM the system shall analyze
the test message.
2. Test message ok:
System shall transmit ZBZ5 ASM.
Test message garbled:
System shall transmit ZBZ1 ASM, set the incoming
channel to closed condition and send a warning
report to the supervisor.
Figure 5.6-3
O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲
CAMPS TRC/P-to-P
channel 1
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ QRT ASM
incoming
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲s̲t̲a̲t̲u̲s̲ ̲2̲ ̲ channel 2
closed ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
outgoing
1) When detecting a QRT on an incoming channel the
system shall set the channel status to "closed"
for the corresponding outgoing channel.
2) Stop transmission on the closed outgoing channel.
3) Report the event to the supervisor.
Figure 5.6-4
O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲O̲p̲e̲n̲
CAMPS TRC/P-to-P
channel 1
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ QRV ASM
incoming
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲s̲t̲a̲t̲u̲s̲ ̲2̲ ̲ channel 2
open ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
outgoing
INT ZBZ ASM
1) When detecting a QRV on an incoming channel the
system shall set the channel status to "closed"
for the corresponding outgoing channel.
2) The system shall transmit an INT ZBZ ASM on the
outgoing channel.
3) Report the event to the supervisor.
Figure 5.6-5
O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲O̲p̲e̲n̲
CAMPS TRC/P-to-P
channel 1
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ZBZ(N) ASM
incoming
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ channel 2
̲s̲t̲a̲t̲u̲s̲ ̲2̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
closed
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ outgoing
1) When detecting a ZBZ(N) ASM the system shall act
in accordance with the numberical suffix N.
2) N equal to 4 or 5:
Incoming channel is OK.
N eual to 1, 2, or 3:
The system shall set outgoing channel status to
"closed", stop the transmission and send a warning
report to the supervisor.
Figure 5.6-6
DN 15 not accepted This function pertains to a higher
level of communication i.e. the message
service function for garbled messages.
DN 16 accepted "DTE" will be changed to read "DCE".
DN l7 accepted The described note will be added to
fig. 4.1-1.
DN 18 accepted The described note will be added to
section 4.2.
DN 19 CR recommend to change section 4.3
2) to read as follows: "CAMPS will
supress the occurrence of the ITA no.
2 "who are you" charecter. CAMPS will
never generate this character".
There are other procedures available
in CAMPS to indicate the idendity of
a station or a device.
DN 20 not accepted. If CAMPS receives messages containing
SI or SO characters then the message
will be sent to message service for
garble correction, i.e. data, which
contain SI or SO characters, will
never be subject for conversion from
ITA no. 5 to ITA no. 2.
DN 21 accepted "no. 32" will be changed to read "no.
31".
DN 22 accepted ITA no. 2 character code no. 8 in figure
4.3-1 will be updated. The figure shift
case of this character will be "invert
delta" and the ITA no. 5 conversion
of this character will be "2/3" (pound
sign)
DN 23 accepted "I/0" will be changed to read "0/10"
DN 24 accepted "0/10" will be changed to read "0/15"
DN 25 not accepted There is no requirement for automatic
re-run request. Refer to telex dated
l980-10-16, our ref: CPS/101/tlx/0076,
subject: NICS TARE interface. This
telex addresses the functions to be
implemented by CR to accomplish the
interface to NICS TARE. The same function
shall be implemented for the interface
to TRC and P-to-P connections.
For re-run facility see CPS/230/ICD/002.
Channel continuity will be performed
by use of self-addressed channel check
messages and TI continuity check.
Refer to DN 1 and DN 8 to DN 12
DN 26 accepted "and 16" will be replaced with ", 16
and possibly 15".
DN 27 accepted "and optionally eight line feeds" will
be added.
DN 28 clarify See DN 5. Pleace specify if "ZES2"
shall be used instead of "ZBC1".
DN 29 accepted Section will be updated as stated.
DN 30 accepted "(sp)" will be inserted.
DN 31 accepted Same as DN 30.
DN 32 See answer to DN 9.
DN 33 not accepted CR have no requirement for an automatic
generated response message (ZIC) to
Channel Number Reset Message. See answer
to DN 13.
DN 34 accepted Section is rewritten. See DN 14.
DN 35 accepted Section is rewritten. See DN 14.
DN 36 accepted Section is rewritten. See DN 14.
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲…06…1 …02… …02… …02… …02…
b) During the SDS review some changes to CPS/SDS/001 secton
3.2 was agreed. These changes does also reflect document
CPS/ICD/007. To make CPS/ICD/007 consistent with CPS/SDS/001
the following will be made:
1. Section 1: "Crypto /modem" will be changed to
read "Crypto/low speed".
2. Section 3.1 a) The following sentence will be added:
"Speeds of 300 and 600 bps are used
on internal systems only and will not
interface with a crypto equipment."
3. Section 3.1 c) "Half duplex" will be changed to read
"full duplex or simplex".
4. Section 3.1 d) This section will be replaced by: "The
character code is either ITA no.2 or
ITA no.5"
5. Section 3.1 f) This section will be renumbered to
read 3.1 g) and a new section will
be included as 3.1 f):
"7 bit character code (ITA no.2) with
one start bit, five data bit and one
stop bit"
6. Section 3.3 For clarity and to make the description
similar to the CCITT's recommendation
V24 the follwoing changes is recommended:
a) (7) Data channel received line
signal detector (109)" will be
changed to read: "(7) Data set
ready (107).
b) "(8) Positive 6V" will be deleted.
c) Section 3.3 (2) will be changed
to read:
This is the data signals originated
by CAMPS. Traffic on this line
shall only be possible if circuits
105, 106, 107, and 108/2 are in
the ON condition.
d) Section 3.3 (7) will be changed
to read:
D̲a̲t̲a̲ ̲S̲e̲t̲ ̲R̲e̲a̲d̲y̲ ̲(̲1̲0̲7̲)̲
A control signal sent from the
low speed equipment to CAMPS indicating
whether the equipment is ready
to operate. This circuit will be
ON when the equipment is ready
to operate and it will be OFF,
if the equipment cannot accept
data traffic.
e) Section 3.3 (8) will be deleted.
Not part of CCITT's V24 interface.
c) CR will now proceed with updating of the ICD based
on the above answers to the DNs. Please return as soon
as possible with your comment to te outstanding points.
Kind regards,
CHRISTIAN ROVSING A/S
Gert Jensen
