
184 VoIP
Assign the threshold for packet loss which, if exceeded during a call,
generates an alarm at the end of the call. The parameter threshold is a
value from 1 to 1000 in units of a tenth of a percent. The default threshold
is 10 (that is, 1 percent).
When a call through the VGMC gateway is released, the application
compares the number of packets lost with the total number of packets.
The Transmit (TX) and Receive (RX) streams (to and from the terminal,
respectively) are checked individually. If the percentage exceeds the
configured threshold value, an alarm occurs.
The alarm can be reported from two tasks: tRTP logs packet loss for data
through the gateway, and tVTM logs packet loss reported by the IP Phone.
The alarm shows the channel number, the percentage of packets lost, the
direction of the packet stream (RX is IP Phone to VGMC), the IP Phone IP
address and the alarm cause field (26 is alarmCauseCongestion).
VGMC> itgPLThreshold 50
value =0=0x0
VGMC>
SEP 22 11:17:48 tRTP: Warning ITG4028 Voice packet loss: 0
6.4% rx 47.147.75.81 (26)
SEP 22 11:17:50 tVTM: Warning ITG4028 Voice packet loss: 0
6.6% tx 47.147.75.81 (26)
itgShell
Syntax:
itgShell
Returns to the VGMC command line interface prompt (VGMC>). This
command applies to VGMC only and is not supported on MC32S.
-> itgShell
VGMC>
itsAlarmTest
Syntax:
itsAlarmTest alarm
Creates and sends a dummy SNMP alarm for one or more ITSnnnn
alarms.
To send dummy SNMP alarm messages for all ITS alarms, assign alarm
a value less than 0. To send a dummy SNMP alarm message for the
specified alarm, assign alarm a value from 0 to 10.
Nortel Communication Server 1000
Troubleshooting Guide for Distributors
NN43001-730 02.02 31 December 2009
Copyright © 2008-2009 Nortel Networks. All Rights Reserved.
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