Avaya G430 Manual page 376

Monitoring applications
The RTP statistics application is configured as described in
network on page 373. The callers complain after the call that there were QoS problems during
the call. The administrator investigates as follows:
//to see if the RTP statistics application registered QoS problems for the call:
Gxxx-001 (super)# show rtp sessions
ID QoS Start date and time End Time Type
----- --- ------------------- -------- ---------- ---------------
1
00001 *
2004-12-07,00:39:26 00:41:01
//to display more details on the session:
Gxxx-001 (super)# show rtp-stat detailed 1
Session-ID: 1
Status: Terminated, QOS: Faulted
, EngineId: 0
Start-Time: 2004-12-07,00:39:26, End-Time: 2004-12-07,00:41:01
Duration: 00:01:35
CName: gwp@30.30.30.1
Phone: 199:2111
Local-Address: 30.30.30.1:2329 SSRC 2764463979
Remote-Address: 20.20.20.2:2329 SSRC 1260226 (0)
Samples: 19 (5 sec)
Codec:
G711U 200B 20mS Off, Silence-suppression(Tx/Rx) Disabled/Disabled, Play-Time 63.
916sec, Loss 11.0% #15
, Avg-Loss 8.6%, RTT 201mS #0, Avg-RTT 210mS, JBuf-under/o
verruns 9.4%/0.0%, Jbuf-Delay 2mS, Max-Jbuf-Delay 35mS
Received-RTP:
Packets 3225, Loss 0.0% #9
, Avg-Loss 8.4%, RTT 124mS #0, Avg-RTT 96mS, Jitter 11
mS #0, Avg-Jitter 9mS, TTL(last/min/max) 63/63/63, Duplicates 0, Seq-Fall 0, DSC
P 46, L2Pri 12, RTCP 9
Transmitted-RTP:
VLAN 1, DSCP 46, L2Pri 6, RTCP 17
Remote-Statistics:
Loss 11.6% #14
, Avg-Loss 8.9%, Jitter 33mS #0, Avg-Jitter 26mS
Echo-Cancellation:
Loss 49dB #0, Len 32mS
RSVP:
Status Disabled, Failures 0
A few points to note:
• The asterisk in the show rtp sessions output indicates that session 1 has QoS faults
[1]
• The QoS is described as Faulted because there were QoS faults [2]
• QoS faults that can be seen in the output are:
- The codec loss event counter indicates that codec loss went over its threshold 15
times [3]
- The received-RTP packet loss event counter indicates that packet loss went over its
threshold nine times [4]
- The remote packet loss event counter indicates that remote packet loss went over
its threshold 14 times [5]
376 Administering Avaya G430 Branch Gateway
G711U
2
3
4
5
Comments? infodev@avaya.com
Four telephones in a sample
Destination
20.20.20.2
October 2013