Delay on answerring incoming calls

[Derrick32]

Hey All,
I have a user thats experiencing a 5 second delay from the second he answers his call til the other end of the line connects. Im at a loss for this, vitelity says they arent experiencing any problems so it has to be something on my end..

Can anyone please help or suggest how i would go about troubleshooting this issue???

Thanks,

Derrick

 

[atsak]

Hey All,
I have a user thats experiencing a 5 second delay from the second he answers his call til the other end of the line connects. Im at a loss for this, vitelity says they arent experiencing any problems so it has to be something on my end..

Can anyone please help or suggest how i would go about troubleshooting this issue???

Latency on the internet connection to Vitelity? Have you done any tracert or ping tests? What kind of firewall is it?

 

[Derrick32]

Well its a T1 connection, and its not behind a firewall. It does use an internal firewall however (IPtables/Fail2ban).

This morning the same user said he had a call come in and it was dropped. As if it failed to connect the two ends after a couple seconds. So this issue may be getting worse.. Can anyone tell me how to go about troubleshooting something like this??? Im a total noob, please excuse the lack of background knowledge..

Derrick

 

[atsak]

Unfortunately there's a lot of things that can cause that kind of problem. I'm not an expert yet, but I would look into these things:

What does the status panel show the CPU as when the call commences? How much memory is on the server? Is there some spare?

On the T1 internet line - is there anything else running on it? Could it be saturated?

Is there possibly poor network cabling or a bad switch? Could the network the phone is on be saturated or not working properly?

 

[jroper]

Hi

By watching a SIP trace - sip set debug - and watching the full log as a call comes in, you may be able to identify whether the problem lies in the PBX, before it, or after it.

Joe

 

[Derrick32]

Vitelity says my trace looks good to them and there doesnt seem to be a problem on their end.. So the ball is back in my court.

Network saturation is a possibility, ill have to monitor the bandwith throughout the day.. Im assuming watching wireshark would be the way to go on this one..

Joe, what kinds of things would i be looking for in the sip debug?? Any buzzwords or anything specific??

Thanks for the help guys!!

Derrick