QoS Trap output fields

Last Updated : May 05, 2023 |

The following table describes the fields in the QoS trap according to the numbered labels in the example.

Label

Description

From the trap example

1

The date on which the trap was received

Oct 20

2

The time at which the trap was received

11:13:40

3

The IP address of the local MGP

135.8.118.252

4

The Branch Gateway up time

sysUpTime.0 = Timeticks: (43147723) 4 days, 23:51:17.23

5

The trap name, which indicates that this is a QoS trap

snmpTrapOID.0 = OID: av

RtpQoSTrap

6

The local gateway PMI

avRtpSessionLocAddrV4.0 = IpAddress: 135.8.118.252

7

The remote VoIP engine, gateway PMI, or IP phone address

avRtpSessionRemAddrV4.0 = IpAddress: 135.8.76.107

8

The duration of the RTP session

Duration: 00:04:33

9

Format: gwt@<MGP-address>

avRtpSessionCname.0 = STRING: gwp@135.8.118.252

10

The local extension number and conference ID in format <conference ID>:<extension number>.

Conference calls can involve more than one entry in the session table. Multiple sessions belonging to the same conference call can usually be identified by a common conference ID.

Notes:

  • The phone string data is received from CM if VMON is configured.

  • If you are not running VMON, you can cause CM to send the phone string data by configuring a dummy RTCP-server for the region, with a 'localhost' IP address (127.x.x.x).

avRtpSessionPhone.0 = STRING: 69:2011

11

An arbitrary index number for the session in the session table

avRtpSessionDebugStr.0 = STRING: Id{35}

12

The total number of sent traps since the application was enabled

Traps{2411/0}

13

The number of traps that were dropped by the trap rate limiter since the application was enabled. This item can be used, when analyzing received traps logs, to identify missing traps (due to network conditions or the rate limiter). This is also displayed by the show rtp-stat summary command.

Traps{24/012}

14

The number of times the application sampled the VoIP engine (RTP receiver) statistics

Stats{S 54}

15

The total number of received RTCP packets

Stats{S 54 RTCP 5414 RX 9236}

16

The total number of received RTP packets

Stats{S 54 RTCP 54 RX 923615}

17

The codec used for the session

g729

18

The codec packet size, in bytes

62B

19

The encryption method

encryptionOff

20

The received silence suppression method

SSup disabled19/disabled

21

The transmitted silence suppression method

SSup disabled/disabled20

22

The average of all codec loss values sampled during the session

Loss 0.1%21 #1

23

The codec loss event counter

Loss 0.1% #122

24

The average of all codec round trip time values sampled during the session

RTT 570mS23 #38

25

The codec round trip time event counter

RTT 570mS #3824

26

The percentage contribution of jitter-buffer underruns to the average codec loss

Jbuf 0.1%25/0.0%

27

The percentage contribution of jitter-buffer overruns to the average codec loss

Jbuf 0.1%/0.0%26

28

The average of all network RTP packet loss values sampled during the session

Loss 0.0%27 #0

29

The network RTP packet loss event counter

Loss 0.0% #028

30

The average of all network RTT values during the session

RTT 376mS29 #38

31

The network RTT event counter

RTT 376mS #3830

32

The network jitter at the RTP receiver

Jtr #0

33

The minimum and maximum TTL values sampled in the session

TTL 63-63

34

A counter that increments each time two consecutive RTP packets with the sample RTP sequence number are received

Dup 0

35

A counter that increments each time an RTP packet with a sequence number less than the last known sequence is received

Fall 0

36

The average network loss experienced by the remote RTP receiver

Rem{Loss 0.0%36 #0 Jtr #0}

37

A counter that increments each time the remote loss is sampled over its threshold

Rem{Loss 0.0% #037 Jtr #0}

38

A counter that increments each time the network jitter experienced by the remote RTP receiver is sampled over its threshold

Rem{Loss 0.0% #0 Jtr #038}

39

The echo cancellation loss on the TDM bus. A high value (that is, a low absolute value) may indicate impairment of DCP terminals.

EC{Loss 45dB}