Westermo IDW-90 AT - Manual (Page 87)

87 6620-3200
0712/8712: D channel messages, coding refers to Q.931 and ETS 300102-1.
Coding of Message Type within D channel layer 3 message – 4th
data byte in trace output:
Message code Message name
(Hex)
01 ALERTING
02 CALL PROCEEDING
03 PROGRESS
05 SETUP
07 CONNECT
0D SETUP ACKNOWLEDGE
0F CONNECT AKNOWLEDGE
20 USER INFORMATION
21 SUSPEND REJECT
22 RESUME REJECT
25 SUSPEND
26 RESUME
2D SUSPEND ACKNOWLEDGE
2E RESUME ACKNOWLEDGE
45 DISCONNECT
46 RESTART
4D RELEASE
4E RESTART ACKNOWLEDGE
5A RELEASE COMPLETE
60 SEGMENT
75 STATUS ENQUIRY
79 CONGESTION CONTROL
7B INFORMATION
7D STATUS
7E NOTIFY