Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 90)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 90
5.5.8 MTP3 Q.791 Event Indication
Synopsis:
Message issued by MTP3 to notify management of various protocol events in
accordance with CCITT Q.791.
Message Format:
MESSAGE HEADER
FIELD NAME MEANING
type MGT_MSG_MTP_EVENT (0x0301)
id 0
src MTP3 module id
dst
Management module id
rsp_req 0
hclass 0
status EVENT CODE (see below)
err_info Timestamp
len Either 0, 1, 2 or 4
PARAMETER AREA
OFFSET SIZE NAME
0 len Event specific parameters
The EVENT_CODE coding and the meaning of the event specific parameters are
given in the following table:
link is indicated as (linkset_id * 256) + link_ref, (size = 2).
linkset is indicated as linkset_id, (size = 1).
point code is a 4 byte value, (size = 4).
Value Mnemonic Parameter Description
1 MTPEV_CO link Changeover
2 MTPEV_CB link Changeback
3 MTPEV_REST link Restoration commenced
4 MTPEV_RPO link Remote processor outage
5 MTPEV_RPO_CLR link Remote processor outage cleared
6 MTPEV_CONG link Signalling link congestion
7 MTPEV_CONG_CLR link Congestion cleared
8 MTPEV_CONG_DIS link MSU discarded due to congestion
9 MTPEV_LS_LOST linkset Link set failure
10 MTPEV_LS_OK linkset Link set recovered
13 MTPEV_DEST_LOST point code Destination unavailable
14 MTPEV_DEST_OK point code Destination available
15 MTPEV_AJSP_LOST linkset Adjacent SP inaccessible
16 MTPEV_AJSP_OK linkset Adjacent SP accessible.