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10003137.00 Rev.1
3-10 Examples
Layer 3 message
031 number of traffic item in the buffer
USER source of item
Jan 03 date and time of item
Q931 ITU-T layer 3 protocol recommendation
INFOrmation message type
C/Ref 0001e call reference number, unique for duration of call
Org originating or destination side of call
The first line of a layer 3 message always has the same format, although the amount of
information displayed depends on the level of decoding (see Long, Med and Short
commands in Chapter 4 — Commands).
Item sources
When monitoring one ISDN interface from one COM port (the default), the item source
is either USER or NETWORK.
If monitoring one ISDN interface from two COM ports, the source is either:
USER(n) or NETWORK(n)
where n = 1 or 2 (for COM1 or COM2).
If monitoring multiple ISDN interfaces from one COM port, the source is either:
USER Pm or NET Pm
where m = 1 to 4 (for the ISDN interface).
If monitoring multiple ISDN interfaces from two COM ports, the source is either:
U(n) Pm or N(n) Pm
where n = 1 or 2 (for COM1 or COM2) and m = 1 to 4 (for the ISDN interface).