Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 81)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 81
5.4.7 MTP Status Indication
Synopsis:
This primitive is used by level 3 to indicate to the user the partial inability of
providing the MTP service to the specified destination.
Message Format:
MESSAGE HEADER
FIELD NAME MEANING
type MTP_MSG_STATUS (0x8405)
id user_part_reference
src MTP_TASK_ID
dst
User Part Module ID
rsp_req 0
hclass 0
status 1 Remote User Unavailable
2 Signalling Network Congestion
err_info 0
len 6
PARAMETER AREA
OFFSET SIZE NAME
0 4 Affected destination point code.
4 2 Congestion status (if status = 0x02).
Description:
This message is sent by MTP3 to each user part that has been enabled in the
event that a destination signalling point becomes congested. It is also sent to
the local user part in the event that the remote user part is unavailable.