Welltech Dialogic SS7 Protocols ISUP - Manual (Page 167)

Dialogic ® SS7 Protocols ISUP Programmer's Manual Issue 15
167
8.23 Selective Trace Event Indication
This message is issued by the ISUP module optionally to enable additional
diagnostic information to be reported along with selected software events and
maintenance events for debug purposes. When certain maintenance and
software events are reported the ISUP module, may be configured to also
send, to the Trace module, a Selective Trace Event Indication that caused the
event to be reported. For events that are selectively traced the ISUP module
will trace the entire message that caused the software or maintenance event
to be reported e.g. Initial Address and Group Reset for events such as those
indicating insufficient data or incorrect data.
Message Header
structure MSG
type MGT_MSG_SEL_TRACE (0x0f16)
id 0
src ISUP module ID
dst Trace module ID
rsp_req 0x00
hclass 0x00
status Reason for trace (see below)
err_info 0
len 18 + length of traced data
Parameter Area
offset 0, size 1 source module id
offset 1, size 1 destination module id
offset 2, size 2 id
offset 4, size 2 type
offset 6, size 2 status
offset 8, size 4 timestamp
offset 12, size 4 pointer to message being traced
offset 16, size 2 data length
parameters
offset 18, size 0..280 contents of the MSG parameter area