TM 11-5815-602-10
EE161-DM-OPI-010/E154UGC74
TO 31W4-2UGC74-1
Example: The operator begins operations and composes and transmits two messages:
System assigns message number 0001 to the first message and 0002 to the second.
q
The next received message is assigned message number 0003 and is stored in message
q
memory.
Each receiving station assigns its own message number to the message, which often
q
differs from the sending station's message number.
Message tracing is impossible unless the sending station places its message number
q
within the text of the message.
NOTE
The DATE/TIME group of the message header can be used for identifica-
tion traceability.
(3) Message numbers are assigned and reserved after the front envelope section of a
message is recognized by the system.
(4) Receive Message Numbering: Each time a message is received from a distant station,
the message is assigned a number by the terminal before the receive message is plac-
ed in message memory.
(5) Message Numbering Sequence: Messages entering message memory are assigned
numbers on a first-come, first-served basis. There are no numbers set aside specifically
for send messages or for receive messages.
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