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4 Message Reference

Value

Mnemonic

Description

S7T_T2_EXP

Timer T2 expiry

S7T_T3_EXP

Timer T3 expiry

S7P_AERM

Failed proving attempt

4.4.8 MGT_MSG_MTP_EVENT - MTP3 Q.752 Event Indication

Synopsis

Message issued by MTP3 to notify management of various protocol events in

accordance with ITU-T Q.752.

Format

MESSAGE HEADER

Field Name

Meaning

type

MGT_MSG_MTP_EVENT (0x0301)

src

MTP3 module id

dst

Management module id

rsp_req

hclass

status

Event Code (see below)

err_info

Timestamp

len

Either 0, 1, 2 or 4

PARAMETER AREA

Offset

Size

Name

len

Event specific parameters

Description

This primitive is used by MTP3 to advise management of the occurrence of protocol

related events in accordance with Q.752. These events either relate to the reason for a

signaling link (that was in service) going out of service (events prefixed S7F_) or the

occurrence of congestion related events (prefixed S7G_).

Parameters

Event Code

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).

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 73 74

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