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DSI SS7MD Programmer’s Manual Issue 3
6.7.6
MGT_MSG_SS7_EVENT – MTP2 Q.791 Event Indication
Synopsis
Message issued by the MTP2 module to advise management of protocol events in accordance with Q.791.
Format
Description
This primitive is used by MTP2 to advise system management of the occurrence of protocol related events in
accordance with Q.791. Currently, these events relate to the following:
•
the reason for a signaling link (previously in service) going out of service (events prefixed S7F_)
•
a timer expired (prefixed S7T_)
•
a proving failure (prefixed S7P_)
The MGT_MSG_SS7_EVENT message header includes the following field:
•
EVENT CODE
The event that has just occurred. The following table indicates the possible values and their meanings.
MESSAGE HEADER
Field Name
Meaning
type
MGT_MSG_SS7_EVENT (0x0202)
id
l2_llid
src
MTP2_module_ID
dst
Management module ID
rsp_req
0
hclass
0
status
EVENT CODE (see below)
err_info
Timestamp
next
0
len
0
Value
Mnemonic
Description
0
S7F_STOP
Stop request received
1
S7F_FIBR_BSNR
Abnormal FIBR/BSNR
2
S7F_EDA
Excessive delay of acknowledgement
3
S7F_SUERM
Excessive error rate (SUERM or EIM)
4
S7F_ECONG
Excessive congestion
5
S7F_SIO_RXD
Unexpected SIO received
6
S7F_SIN_RXD
Unexpected SIN received
7
S7F_SIE_RXD
Unexpected SIE received
8
S7F_SIOS_RXD
SIOS received
32
S7T_T1_EXP
Timer T1 expiry
33
S7T_T2_EXP
Timer T2 expiry
34
S7T_T3_EXP
Timer T3 expiry
48
S7P_AERM
Failed proving attempt
