Welltech Dialogic SS7 Protocols ISUP - Manual (Page 87)

Dialogic ® SS7 Protocols ISUP Programmer's Manual Issue 15
87
6.7.3 Cause Indicators
The format of the cause indicators parameter is defined in ITU-T Q.763
Section 3.12. Due to the importance of the parameter it is also shown in the
following figure:
Figure 4. Format of the Cause Indicators Parameter
8 7 6 5 4 3 2 1
Name = 00010010 (18)
Length = 2 - 255
1 Ext. Coding standard Spare Location
2 Ext. Cause value
3 First octet of diagnostics (if any)
:
n Last octet of diagnostics (if any)
The following table lists the release cause values that are used in the Release
indication sent to the application when call processing timers expire.
Table 2. Release Cause Values used in the Release indication sent to the
Application when Call Processing Timers Expire
Timer Cause
Timer Description Value Description
T2 Waiting for RES after (user) SUS is
received 102 Recovery on timer expiry
T3 Started on receipt of overload message 31 Normal, unspecified
T6 Waiting for RES after (network) SUS is
received 102 Recovery on timer expiry
T7 Waiting for ACM 31 Normal, unspecified
T8 Waiting for COT 41 Temporary failure
T9 Waiting for ANM 19 No answer from user (user
alerted)
T35 Waiting for ST digit 28 Address incomplete
T38 Waiting for RES after (network) SUS is
received in an international exchange - timer not supported