[Asterisk-Users] Snom high SIP ping time

[Steve Glaus]

Mike Fedyk wrote:
> Steve Glaus wrote:
>> Mike Hammett wrote:
>>> (ICMP) pings were under 1 ms.  No amount of different Asterisk 
>>> versions or phone firmware revisions seems to solve this.  All was 
>>> well, then (as far as we know) without changes, it crapped out.
>>>  
>>> Any ideas?
>>>   
>> I'm having much the same issues only I'm using Cisco 7960 phones. 
>> When I do a 'sip show peers' I'm getting times in excess of 300ms. A 
>> soft phone on the same network (x-lite), is reporting times of 4 ms. 
>> Related to this (I think), I'm getting audio issues. The person being 
>> called can hear the caller fine but the callee's voice drops in and 
>> out excessively.
>>
>> I have qualify set to yes in the sip definitions for all the clients 
>> (Including the soft phone). Does anyone know what is causing this. 
>> I'm not aware what the sip ping times were earlier, but the audio 
>> issues seemed to have started spontaneously.
> Do you have any problems when there are a low number of concurrent calls?
> Do you ever get any messages saying the phones are unreachable?  Or 
> lagged?
> What kind of Internet connection do you have?
> Do you have any problems with calls between phones on the same network 
> (no routers in between)?
> What model of switches do you have?
> What model of Internet router do you have?
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Do you have any problems when there are a low number of concurrent calls?

Yes, from what I've seen and tested, it doesn't make a difference how 
many calls there are.


Do you ever get any messages saying the phones are unreachable?  Or lagged?

Yes, a phone not being used often enough will often report 
'UNREACHABLE'  When a call is made that changes


What kind of Internet connection do you have?

We have a synchronous T1 connection. The phones run on the same network 
as data.

Do you have any problems with calls between phones on the same network 
(no routers in between)?

There are some static issues but nothing like outside calling were the 
person being called drops off for 10 seconds at a time.

Switches used are 3com Baselines 2024

What model of Internet router do you have?

Cisco 1700 router


My main concern is the fact that the soft-phone is reporting only 4ms of 
delay and the cisco phones are reporting > 200. All the time, regardless 
of network bandwidth.