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Notes: CPS/ICD/007
Names: »0343A «
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WangText
…18……00……00……00……00…A…02……00……00…A
5…02…5…06……1c……02……1c……05……0d……0b……0d……01……0d……07……0c……0c……0c……00……0c……86…1 …02… …02… …02…
…02…CPS/ICD/007
…02…TDJ/840119…02……02…#
TRC, POINT TO POINT CONNECTION INTERFACE
…02…ISSUE 2.1…02…CAMPS
T̲A̲B̲L̲E̲ ̲O̲F̲ ̲C̲O̲N̲T̲E̲N̲T̲S̲
…02…1 SCOPE ........................................ 5
…02…2 REFERENCED DOCUMENTS ......................... 5
to 6
…02……02…2.1 ABBREVIATIONS ............................ 6
…02…3 ELECTRICAL INTERFACE ......................... 6
to 11
…02……02…3.1 LINE CHARACTERISTICS ..................... 7
…02……02…3.2 ELECTRICAL CHARACTERISTICS ............... 8
…02……02…3.3 INTERCHANGE WIRES ........................ 9
…02……02…3.4 CONNECTOR CHARACTERISTICS ................ 11
…02…4 CHARACTER CONVERTION ITA2/ITA5 ................ 12
to 18
…02……02…4.1 INTERNATIONAL ALPHABET NO. 2 .............. 12
…02……02…4.2 INTERNATIONAL ALPHABET NO. 5 .............. 14
…02……02…4.3 ITA NO. 2/ITA NO. 5 CONVERSION ............ 16
…02…5 MESSAGE TRAFFIC .............................. 19
to 37
5.1 GENERAL LAYOUT OF ABBREVIATED SERVICE
MESSAGES ..................................
19
5.2 CONSECUTIVE IDENTICAL CHARACTERS ..........
20
5.3 FLASH MESSAGE RECEIPT .....................
21
5.3.1 Outgoing Flash Receipt ................
21
5.3.2 Incoming Flash Receipt ................
21
5.4 TRAFFIC CONTINUITY CHECK ..................
21
5.4.1 Outgoing Self-addressed Channel Check
Message ...............................
22
5.4.2 Incoming Self-addressed Channel Check
Message ...............................
23
5.4.3 TI Continuity Check on Outgoing Message
23
5.4.4 TI Continuity Check on Incoming Message
23
5.5 CHANNEL NUMBER RESET ......................
23
5.5.1 Incoming Channel ......................
24
5.5.2 Outgoing Channel ......................
24
5.6 CHANNEL CLOSING, OPENING AND TESTING ..... 25
5.6.1 General .............................. 25
5.6.1.1 Controlling Authority ............ 25
5.6.1.2 Definitions ...................... 26
5.6.1.3 Constraints ...................... 26
5.6.2 Incoming Channel Closing, Opening and
Testing .............................. 26
5.6.2.1 Incoming Channel Closing ......... 26
5.6.2.2 Incoming Channel Opening ......... 27
5.6.2.3 Incoming Channel Testing ......... 28
5.6.3 Outgoing Channel Closing, Opening and
Testing .............................. 29
5.6.3.1 Outgoing Channel Closing ......... 29
5.6.3.2 Outgoing Channel Opening ......... 29
5.6.3.3 Outgoing Channel Testing ......... 30
1̲ ̲ ̲S̲C̲O̲P̲E̲
This document describes the interface between CAMPS
and Tape Relay Center (TRC) and also the interface
used in Point-to-Point connections. CAMPS can be connected
to the equipment either by a direct link or via a crypto/low
speed link. CAMPS's interface protocols will be the
same whether a direct link or a crypto/low speed link
is used. The interface protocols described will be:
- electrical interface
- message interface
2̲ ̲ ̲R̲E̲F̲E̲R̲E̲N̲C̲E̲D̲ ̲D̲O̲C̲U̲M̲E̲N̲T̲S̲
1) System Requirements Specification
Doc. No. CPS/210/SYS/0001.
2) ACP 127 NATO Supp. 3 Procedures
Doc. No. CPS/230/ICD/0003.
3) CCITTs recommendation V24 and V28 for Interchange
Circuits.
2.1 A̲B̲B̲R̲E̲V̲I̲A̲T̲I̲O̲N̲S̲
ASM Abbreviated Service Message
TOF Time of Filing
EOLF End-Of-Line-Function
EOTF End-Of-Transmission-Function
PLA Plain Language Address
P-to-P Point-to-Point Connection
RI Routing Indicator
SOTF Start-Of-Transmission-Function
S & CD Station & Channel Designator
SSN Station Serial Number
TI Transmission Identification
TRC Tape Relay Center
TSN Transmission Serial Number
3̲ ̲ ̲E̲L̲E̲C̲T̲R̲I̲C̲A̲L̲ ̲I̲N̲T̲E̲R̲F̲A̲C̲E̲
3.1 L̲I̲N̲E̲ ̲C̲H̲A̲R̲A̲C̲T̲E̲R̲I̲S̲T̲I̲C̲S̲
a) Baud rates are 50 or 75 bps for TRC lines and 50,
75, 110, 300 or 600 bps for Point-to-Point connection.
Speeds of 300 and 600 bps are used on internal
systems only, and will not interface with crypto
equipment.
b) The interchange circuits between CAMPS and TRC/Point-to-Point
shall conform to CCITTs recommendation V24/V28
with modifications as described in section 3.2.
c) The transmission is asynchronous full duplex or
simplex.
d) The character code is either ITA no. 2 or ITA no.
5.
e) 10 bit code, serial data, character-by-character,
with odd parity. (ITA no. 5).
1 2 3 4 5 6 7 8 9 10
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲
̲ ̲ ̲ ̲L̲S̲B̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲M̲S̲B̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲
start 7 bit data parity stop
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
transmission direction
LSB: Least Significant Bit
MSB: Most Significant Bit
f) 7 bit character code (ITA no. 2)
1 2 3 4 5 6 7
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲L̲S̲B̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲M̲S̲B̲ ̲ ̲ ̲ ̲ ̲ ̲
start 5 bit data stop
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
transmission direction
LSB: Least Significant Bit
MSB: Most Significant Bit
g) Synchronization and upstart of the cryptoes are
handled manually.
3.2 E̲L̲E̲C̲T̲R̲I̲C̲A̲L̲ ̲C̲H̲A̲R̲A̲C̲T̲E̲R̲I̲S̲T̲I̲C̲S̲
The interchange circuits shall conform to CCITTs Recommendations
modified as set out below:
a) The interface conditions shall be defined as those
existing at CAMPS External Circuit Connection Point.
b) The basic interface to the Send and Receive circuits
shall be polar current signalling at not greater
than one (1) milliamp.
c) The nominal voltage shall be positive and negative
6 volts when terminated into 6000 ohms.
d) The open circuit generator voltage shall not be
greater than positive or negative 10 volts.
e) The voltage, when terminated into a receiving load
of 6000 ohms plus or minus 1000 ohms, shall be
positive and negative 6 volts plus or minus 1 volt.
The ripple shall be less than 0.5% under normal
operating conditions. The positive and negative
polar voltages shall be balanced within 5%.
f) The maximum delivered current under conditions
of short circuit between any of the signalling
wires and any other or earth shall not exceed 100
milliamps.
g) The source impedance is not defined but shall be
so arranged that the defined interface conditions
are satisfied.
h) The load impedance shall be 6000 ohms plus or minus
1000 ohms.
i) The bias voltage seen at the receiving load input
terminals, when the input is open circuit, shall
not exceed 2 volts.
j) No damage shall occur when voltages of plus or
minus 30 volts are applied to the Send or Receive
input/output terminals.
k) The effective shunt capacitance to ground of any
load, measured at the interchange point, shall
not exceed 2500 picofarads.
l) Signalling convention to be used shall be:
1) A more negative voltage than -3 volts will
signify a telegraph "MARK" or control/timing
"OFF" and represent the binary ONE or condition
"Z".
2) A more positive voltage than +3 volts will
signify the telegraph "SPACE" or a control/timing
"ON" condition representing the binary Zero
or condition "A".
m) The region between +3 volts and -3 volts is defined
as the transition region. The signal state is not
defined when the voltage is in the transition region.
For pulse and status wires a power-off or disconnection
shall be interpreted as an "OFF" condition.
3.3 I̲N̲T̲E̲R̲C̲H̲A̲N̲G̲E̲ ̲W̲I̲R̲E̲S̲
The interchange wires shall follow the CCITTs V24 interface.
In accordance with CCITTs nomenclature, which is used
in the following, CAMPS will be treated as Data Terminal
Equipment (DTE).
The connected low speed equipment shall act as Data
circuit-terminating equipment (DCE). The interface
will be the same either the connection is direct or
via a crypto/modem equipment.
The relevant circuits are:
(1) Signal ground (102)
(2) Transmitted data (103)
(3) Received data (104)
(4) Data set ready (107)
(5) Data terminal ready (108/2)
The use of the circuits are described below.
(1) S̲i̲g̲n̲a̲l̲ ̲G̲r̲o̲u̲n̲d̲ ̲(̲1̲0̲2̲)̲
This is the common return.
(2) T̲r̲a̲n̲s̲m̲i̲t̲t̲e̲d̲ ̲D̲a̲t̲a̲ ̲(̲1̲0̲3̲)̲
This is the data signals originated by CAMPS. Traffic
on this line shall only be possible if circuits
107 and 108/2 are in the ON condition.
(3) R̲e̲c̲e̲i̲v̲e̲ ̲D̲a̲t̲a̲ ̲(̲1̲0̲4̲)̲
This is the data signals sent from the low speed
equipment and received by CAMPS.
(4) 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 equipment
cannot accept data traffic.
(5) D̲a̲t̲a̲ ̲T̲e̲r̲m̲i̲n̲a̲l̲ ̲R̲e̲a̲d̲y̲ ̲(̲1̲0̲8̲/̲2̲)̲
This circuit will carry a control signal from CAMPS
indicating that CAMPS is ready to operate. CAMPS
will set circuit 108 to ON whenever it is ready
to transmit or receive data.
3.4 C̲O̲N̲N̲E̲C̲T̲O̲R̲ ̲C̲H̲A̲R̲A̲C̲T̲E̲R̲I̲S̲T̲I̲C̲S̲
The connector is a 25-pin Cannon multiplug with characteristics
as described in International Standard ISO 2110.
The pin and interchange assignments are:
LOW
SPEED
CAMPS EQUIPMENT
̲ ̲D̲T̲E̲ ̲ ̲ ̲ ̲ ̲
̲D̲C̲E̲
̲ ̲
̲ ̲
102 Signal ground
pin 7 -------------------------------------
103 Transmitted data
pin 2 -------------------------------------
104 Received data
pin 3 -------------------------------------
107 Data set ready
pin 6 --------------------------------------
108/2 Data terminal ready
pin 20 -------------------------------------
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲
̲ ̲
̲ ̲
̲ ̲
4̲ ̲ ̲C̲H̲A̲R̲A̲C̲T̲E̲R̲ ̲C̲O̲N̲V̲E̲R̲S̲I̲O̲N̲ ̲I̲T̲A̲ ̲2̲/̲I̲T̲A̲ ̲5̲
CAMPS shall be able to convert ITA no. 5 to ITA no.
2 and vice versa. This does only apply to the interface
between CAMPS and TRC.
4.1 I̲N̲T̲E̲R̲N̲A̲T̲I̲O̲N̲A̲L̲ ̲A̲L̲P̲H̲A̲B̲E̲T̲ ̲N̲O̲.̲ ̲2̲
The structure of the codes of IA no. 2 is presented
in table 4.1-1. The first column in column "Character
allocations" is the "letters" the second column is
the "figures".
Note: The character "ALL SPACE" (no. 32) in ITA
no. 2 shall be ignored and removed before
any message analysis by CAMPS on all interfaces
using the character set ITA no. 2.
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲
COMBINATION NO. CODE ELEMENTS CHARACTER ALLOCATIONS
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
1 2 3 4 5 LETTERS FIGURES
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲
1 1 1 0 0 0 A -
2 1 0 0 1 1 B ?
3 0 1 1 1 0 C :
4 1 0 0 1 0 D W R U
5 1 0 0 0 0 E 3
6 1 0 1 1 0 F
7 0 1 0 1 1 G
8 0 0 1 0 1 H
9 0 1 1 0 0 I 8
10 1 1 0 1 0 J BELL
11 1 1 1 1 0 K (
12 0 1 0 0 1 L )
13 0 0 1 1 1 M .
14 0 0 1 1 0 N ,
15 0 0 0 1 1 O 9
16 0 1 1 0 1 P 0
17 1 1 1 0 1 Q 1
18 0 1 0 1 0 R 4
19 1 0 1 0 0 S '
20 0 0 0 0 1 T 5
21 1 1 1 0 0 U 7
22 0 1 1 1 1 V =
23 1 1 0 0 1 W 2
24 1 0 1 1 1 X /
25 1 0 1 0 1 Y 6
26 1 0 0 0 1 Z +
27 0 0 0 1 0 Carriage return
28 0 1 0 0 0 Line feed
29 1 1 1 1 1 Letters
30 1 1 0 1 1 Figures
31 0 0 1 0 0 Space
32 0 0 0 0 0 Not used
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲
Note: On NATO keyboards, ITA no. 2 character no. 8 in figures
shift is indicated by the symbol , which is used
as part of the end of message validation function,
if required.
F̲I̲G̲U̲R̲E̲ ̲4̲.̲1̲-̲1̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲I̲A̲ ̲N̲O̲.̲ ̲2̲
4.2 I̲N̲T̲E̲R̲N̲A̲T̲I̲O̲N̲A̲L̲ ̲A̲L̲P̲H̲A̲B̲E̲T̲ ̲N̲O̲.̲ ̲5̲
The structure of the codes of IA no. 5 is presented
in table 4.2-1. In examining the table the following
points are worth noting:
1. The use of national characters is prohibited for
NATO use.
2. The use of this character as "New Line" is prohibited.
3. This character is used for the graphical symbol
indicating "Overline" or the "Tilde".
4. Positions 1/1, 1/2, 1/3, and 1/4 have the significance
respectively of:
a) Start reader device
b) Start recorder device
c) Stop reader device
d) Stop recorder device
5) The graphics in positions 2/2, 2/7, and 5/14 have
respectively the significance of "Quotation Mark",
"Apostrophe", and "Upward Arrow". However, these
characters take on the significance of the diacritical
signs "Diaeresis", "Acute Accent" and "Circumflex
Accent" when they follow the "Backspace" character.
6) The character in position 2/3 may be used as the
end of message validation function, if required.
NATO 7-BIT CODE TABLE…01…(BASED ON THE ISO/CCITT INTERNATIONAL ALPHABET NO.
5)
Fig. 4.2-1
4.3 I̲T̲A̲ ̲N̲O̲.̲ ̲2̲/̲I̲T̲A̲ ̲N̲O̲.̲ ̲5̲ ̲C̲O̲N̲V̲E̲R̲S̲I̲O̲N̲
The equivalents between IA no. 2 and IA no. 5 codes
are given in table 4.3-1. In examining the table the
following are worth noting:
1) For translation from IA No. 2 to IA No. 5 the system
shall be provided with facilities to enable the
supervisor to condition each outgoing channel so
that bit 6 in columns 4, 5, 6 and 7 of the IA No.
5 code table is preset to either 0 or 1 to cater
for translation to either upper, or lower case
characters.
2) CAMPS will suppress the occurrence of the ITA no.
2 "Who Are You" character. CAMPS will never generate
this character.
3) In the process of conversion from IA No. 2 to IA
No. 5, the occurrence of combination No. 29 (letters)
shall cause conversion of all subsequent ITA No.
2 characters corresponding to the combinations
in column 1 of the table to the characters corresponding
to the column/row combination shown in column 2
of the table. This shall continue until the occurrence
of IA No. 2 combination No. 30 (figures). Every
occurrence of combination No. 29 (letters) will
be deleted.
4) Similarly, the detection of the occurrence of combination
No. 30 (figures) shall result in conversion of
all subsequent characters corresponding to the
combinations in column 1 to the characters corresponding
to the column/row combination shown in column 3
of the table. This shall continue until the occurrence
of IA No. 2 combination No. 29 (letters). Every
occurrence of combination No. 30 (figures) will
be deleted.
5) In the process of conversion from IA No. 5 to IA
No. 2, every occurrence of SI and of SO shall be
translated to letter shift and figure shift respectively.
In addition, the equipment shall
determine, from an inspection of the code combination
of each IA No. 5 character presented to the converter,
whether a case shift is required in translating
into the IA No. 2, and insert the appropriate case
shift code combination into the character stream
to ensure selection of the correct case by an IA
No. 2 telegraph machine.
6) The process of conversion from IA No. 5 to IA No.
2 shall ensure that all those column/row combinations
not included in column 2 and column 3 of the table
are translated into IA No. 2 combination No. 31.
IA No. 2 combination No. 32 shall be translated
into IA No. 5 combination 0/0 (NUL).
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
IA No. 2…02……02… ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲C̲o̲l̲u̲m̲n̲/̲r̲o̲w̲ ̲n̲o̲.̲ ̲o̲f̲ ̲I̲A̲ ̲N̲o̲.̲ ̲5̲ ̲
̲ ̲ ̲ ̲ ̲
combination no. letters case figures
case
(Column 1) (Column 2)
(Column 3)
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
1 A - 4/1 A 6/1 a 5/15
-
2 B ? 4/2 B 6/2 b 3/15
?
3 C : 4/3 C 6/3 c 3/10
:
4 D WRU 4/4 D 6/4 d 0/5 ENQ
5 E 3 4/5 E 6/5 e 3/3
3
6 F 4/6 F 6/6 f 2/5
%
7 G 4/7 G 6/7 g 4/0
8 H 4/8 H 6/8 h 2/3
9 I 8 4/9 I 6/9 i 3/8
8
10 J BELL 4/10 J 6/10 j 0/7 BELL
11 K ( 4/11 K 6/11 k 2/8
(
12 L ) 4/12 L 6/12 l 2/9
)
13 M . 4/13 M 6/13 m 2/14
.
14 N , 4/14 N 6/14 n 2/12
,
15 O 9 4/15 O 6/15 o 3/9
9
16 P 0 5/0 P 7/0 p 3/0
0
17 Q 1 5/1 Q 7/1 q 3/1
1
18 R 4 5/2 R 7/2 r 3/4
4
19 S ' 5/3 S 7/3 s 2/7
'
20 T 5 5/4 T 7/4 t 3/5
5
21 U 7 5/5 U 7/5 u 3/7
7
22 V = 5/6 V 7/6 v 3/13
=
23 W 2 5/7 W 7/7 w 3/2
2
24 X / 5/8 X 7/8 x 2/15
/
25 Y 6 5/9 Y 7/9 y 3/6
6
26 Z + 5/10 Z 7/10 z 2/11
+
27 CR 0/13 CR 0/13 CR
28 LF 0/10 LF 0/10 LF
29 Letters 0/15 SI 0/15 SI
30 Figures 0/14 SO 0/14 SO
31 Space 2/0 SP 2/0 SP
32 Not used 0/0 NUL 0/0 NUL
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
IA NO. 2/IA NO. 5 CONVERSION…01…F̲I̲G̲.̲ ̲4̲.̲3̲-̲1̲
5̲ ̲ ̲M̲E̲S̲S̲A̲G̲E̲ ̲T̲R̲A̲F̲F̲I̲C̲
Message traffic transferred over the CAMPS/TRC interface
and Point-to-Point connection shall follow the procedures
laid down in document CPS/230/ICD/0003, "ACP 127 NATO
Supp. 3 Procedures".
In the following section the formats and procedures
for automatic message traffic control are described,
such as:
- Consecutive Identical Characters
- Receipt of FLASH Messages
- Traffic Continuity Check
- Channel Number Reset
- Channel Opening/Closing
These control messages are of the type Abbreviated
Service Messages (ASM), which in general are treated
by the supervisor, but those listed above are automatically
generated/analyzed by CAMPS.
5.1 G̲E̲N̲E̲R̲A̲L̲ ̲L̲A̲Y̲O̲U̲T̲ ̲O̲F̲ ̲A̲B̲B̲R̲E̲V̲I̲A̲T̲E̲D̲ ̲S̲E̲R̲V̲I̲C̲E̲ ̲M̲E̲S̲S̲A̲G̲E̲S̲
Abbreviated Service Message formats will contain the
ACP 127 message format lines 1, 2, 3, 4, 12g, 16 and
possibly 15. The ASM described in the sections have
the following general layout:
FL 1 VZCZC(TI)(5xsp)UU(EOLF)
FL 2 (XX)(sp)(TO RI)(EOLF)
FL 3 DE(sp)(FROM RI)(sp)(SSN)(sp)(TOF)(EOLF)
FL 4 ZNR(sp)UUUUU(EOLF)
FL 12g (Text)
FL 16 (EOTF)
Where:
TI is the station and channel designator (3
characters) plus the channel serial number
(3 or 4 digits)
XX is the repeated precedence prosign
"TO RI" is the Routing Indicator of the receiver
station
"FROM RI" is the Routing Indicator of the transmitter
station
SSN is the originating station serial number.
CAMPS will not generate a SSN when transmitting
an ASM. When receiving an ASM the SSN is
optional.
TOF is the Julian date (NNN) and time group
(NNNN). (Time of filing)
"Text" is format text
EOLF is two carriage return, line feed
EOTF is two carriage return, eight line feeds,
end-of-message indicator (NNNN) and twelve
letter shift characters, and optionally
eight line feeds.
5.2 C̲O̲N̲S̲E̲C̲U̲T̲I̲V̲E̲ ̲I̲D̲E̲N̲T̲I̲C̲A̲L̲ ̲C̲H̲A̲R̲A̲C̲T̲E̲R̲S̲
In 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/0003 para. 4.2.2.4.
The format of the message is:
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZBC(sp)(channel designator of faulty channel)(EOLF)
(EOTF)
5.3 F̲L̲A̲S̲H̲ ̲M̲E̲S̲S̲A̲G̲E̲ ̲R̲E̲C̲E̲I̲P̲T̲
For transmission of an outgoing message or for reception
of an incoming message both with precedence FLASH,
the system shall respectively receive or send a receipt
message.
The procedures shall be as described in the CPS/210/SYS/0001
section 3.2.1.6.4 and section 3.2.2.4.
5.3.1 O̲u̲t̲g̲o̲i̲n̲g̲ ̲F̲L̲A̲S̲H̲ ̲R̲E̲C̲E̲I̲P̲T̲
The format of the Flash Receipt message shall be:
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
R(sp)Z(sp)(TI of FLASH Message)(EOLF)
(EOTF)
5.3.2 I̲n̲c̲o̲m̲i̲n̲g̲ ̲F̲L̲A̲S̲H̲ ̲R̲E̲C̲E̲I̲P̲T̲
The format of the receipt message shall be:
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(CAMPS RI)(EOLF)
DE(sp)(TRC/P-to-P RI)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
R(sp)Z(sp)(TI of FLASH Message)(EOLF)
(EOTF)
5.4 T̲R̲A̲F̲F̲I̲C̲ ̲C̲O̲N̲T̲I̲N̲U̲I̲T̲Y̲ ̲C̲H̲E̲C̲K̲
The continuity of traffic is checked by two measures:
- 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 incoming open channel 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)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
CHANNEL CHECK(EOLF)
(EOTF)
5.4.2 I̲n̲c̲o̲m̲i̲n̲g̲ ̲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)(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 ̲I̲n̲c̲o̲m̲i̲n̲g̲ ̲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.
5.5 R̲E̲S̲E̲T̲ ̲O̲F̲ ̲C̲H̲A̲N̲N̲E̲L̲ ̲A̲C̲C̲O̲U̲N̲T̲I̲N̲G̲
Incoming and outgoing is as seen from CAMPS.
5.5.1 C̲h̲a̲n̲n̲e̲l̲ ̲N̲u̲m̲b̲e̲r̲ ̲R̲e̲s̲e̲t̲
Channel number reset for incoming channels and outgoing
channels are decoupled.
5.5.1.1 I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
CAMPS shall at any time of the day reset the TSN counter
to one directly after the receipt of a message with
TSN equal to one.
5.5.1.2 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
CAMPS shall reset the TSN counter for outgoing channels
at 23,59 if so specified by the supervisor. The first
transmitted message after 23,59 shall be assigned TSN
equal to one.
5.5.2 C̲h̲a̲n̲n̲e̲l̲ ̲A̲c̲c̲o̲u̲n̲t̲i̲n̲g̲ ̲M̲e̲s̲s̲a̲g̲e̲
The channel accounting message is a ZID abbreviated
service message with the following layout:
VZCZC(TI)(5 x sp)UU(EOLF)
RR(sp)(TO RI)(EOLF)
DE(sp)(FROM RI)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZID (TI of the last transmitted/received message)
(EOTF)
5.5.2.1 I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
On receipt of a ZID ASM CAMPS shall check the TI (channel
designator + TSN) in format line 12g with the TI of
the last message sent prior to the reset. If the TI
check fails, a warning report will be forwarded to
the supervisor.
All ZID ASM shall be forwarded to the supervisor's
printer.
5.5.2.2 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲
CAMPS shall on receipt of any message with TSN equal
to one (refer to section 5.5.1.1) automatically transmit
a ZID ASM containing the TI of the last message received
prior to the reset.…86…1 …02… …02… …02… …02…
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. 5.5-1
to 5.5-6, 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 separate 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.
In order to handle physical connection and disconnection:
- The supervisor has the facility at his discretion
to disconnect the circuit prior to physical disconnect.
- After the physical connection of the circuit by
the technician the supervisor can initiate the
opening of the channel.
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 with 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 abbreviated
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 I̲n̲c̲o̲m̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲,̲ ̲O̲p̲e̲n̲i̲n̲g̲ ̲a̲n̲d̲ ̲T̲e̲s̲t̲i̲n̲g̲
5.6.2.1 I̲n̲c̲o̲m̲i̲n̲g̲ ̲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 corresponding outgoing channel a QRT ASM
is transmitted. All messages arriving later will be
processed as the channel was open and a warning report
will, however, be forwarded to the supervisor.
Format of the QRT ASM
VZCZC(TI)(5xsp)UU(EOLF)
OO(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(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 a 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)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
QRV(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 I̲n̲c̲o̲m̲i̲n̲g̲ ̲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)(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
b) T̲e̲s̲t̲ ̲M̲e̲s̲s̲a̲g̲e̲ ̲5̲%̲ ̲o̲r̲ ̲L̲e̲s̲s̲ ̲G̲a̲r̲b̲l̲e̲d̲
- Automatic generation and transmission of a
ZBZ4 when 5% or less of characters are corrupt.
This is equivalent to 8 characters in standard
test text. The first word "TEST" must not include
corrupted characters.
c) 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 ZBZ(N) ASM
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(sp)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZBZ(N)(EOLF)
(EOTF)
5.6.3 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲,̲ ̲O̲p̲e̲n̲i̲n̲g̲ ̲a̲n̲d̲ ̲T̲e̲s̲t̲i̲n̲g̲
5.6.3.1 O̲u̲t̲g̲o̲i̲n̲g̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲C̲l̲o̲s̲i̲n̲g̲
CAMPS shall automatically 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 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)(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" outgoing
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)(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, and shall forward a report to the supervisor.
Format of the TEST MESSAGE
VZCZC(TI)(5xsp)UU(EOLF)
RR(sp)(TRC/P-to-P RI)(EOLF)
DE(sp)(CAMPS RI)(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) I̲n̲c̲o̲m̲i̲n̲g̲ ̲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)(TOF)(EOLF)
ZNR(sp)UUUUU(EOLF)
ZBZ(N)(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
QRV 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
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
ZBZ(N) 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 5% or less garbled:
--------------------------------
System shall transmit ZBZ4 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 ̲O̲p̲e̲n̲i̲n̲g̲
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 "open" 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 ̲T̲e̲s̲t̲i̲n̲g̲
CAMPS TRC/P-to-P
channel 1
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ZBZ(N) ASM
incoming
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ channel 2
̲s̲t̲a̲t̲u̲s̲ ̲2̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
closed/
open
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ outgoing
1) When detecting a ZBZ(N) ASM the system shall act
in accordance with the numeric suffix N.
2) N equal to 4 or 5:
Incoming channel is OK.
N equal 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
