Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 89)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 89
5.5.7 MTP2 Q.791 Event Indication
Synopsis:
Message issued by MTP2 to advise management of protocol events in
accordance with Q.791.
Message Format:
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
Description:
This primitive is used by MTP2 to advise management of the occurrence of protocol
related events in accordance with Q.791. Currently these events either relate to the
reason for a signalling link (that was in service) going out of service (events prefixed
S7F_) or the occurrence of congestion related events (prefixed S7G_).
The EVENT CODE is coded as shown in the following table:
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).
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.
16 S7G_CONG Onset of signalling link congestion.
17 S7G_CONG_CLR Abatement of signalling link congestion.
18 S7G_CONG_DIS Congestion event caused MSU discard.