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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