What does high jitter indicate on a "list trace" ?

[HBcity]

Our agents are reporting static and voice cutting out on incoming calls.

Here's a trace from one of the agent's 1616 phone.

VOIP data from: [xxxxxxxxx]:3328
19:45:39 Jitter:0 0 0 0 0 0 0 0 0 0: Buff:12 WC:2 Avg:0
19:45:39 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:0 Avg:0
VOIP data from: [xxxxxxxxxx]:3276
19:45:39 Jitter:0 0 0 0 0 0 0 0 0 0: Buff:11 WC:0 Avg:0
19:45:39 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:0 Avg:0
VOIP data from: [xxxxxxxxxxx]:2500
19:45:49 Jitter:2 6 7 7 6 4 5 4 2 4: Buff:22 WC:76 Avg:6
19:45:49 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:3 Avg:0
VOIP data from: [xxxxxxxxxx]:2476

CM 6.0

 

[montyzummer]

The definition of jitter is below

Jitter is a common problem of the connectionless networks or packet switched networks. Because the information (voice packets) is divided into packets, each packet can travel by a different path from the sender to the receiver. When packets arrive at their intended destination in a different order then they were originally sent, the result is a call with poor or scrambled audio.

Jitter is technically the measure of the variability over time of the latency across a network. Jitter is one of the most common VoIP call quality problems.

So a pretty broad ranging symptom , what is your architecture port network h248 gateways ip phones??

I ask because this could be down to lots of different issues , the most common would be an issue on the network infrastructure , but it could be a host of things , Avaya ip phones have a jitter buffer the 1616 is not likely to be a culprit , you have all sorts of troubleshooting methods but really need to start at the start of the audio source and work your way to the phone eliminating variable along the way.

APSS (SME)
ACSS (SME)
ACIS (UC)

 

[HBcity]

ip phones are connected to a data switch port speed 100 full duplex onto a voice vlan and then routed over MPLS network down to a S8800 CM 6.0

Is this level of jitter considered over normal stats?
19:45:49 Jitter:2 6 7 7 6 4 5 4 2 4: Buff:22 WC:76 Avg:6