[Asterisk-Users] (newby) Is PING a good indicator of latency?

[Olle E Johansson]

Damon Estep wrote:
> 
>>-----Original Message-----
>>From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
>>bounces at lists.digium.com] On Behalf Of Olle E Johansson
>>Sent: Wednesday, February 01, 2006 5:25 AM
>>To: Asterisk Users Mailing List - Non-Commercial Discussion
>>Subject: Re: [Asterisk-Users] (newby) Is PING a good indicator of
> 
> latency?
> 
>>Cosmin Prund wrote:
>>
>>>As the subject line says: Is PING a good indicator of network
> 
> latency?
> 
>>If
>>
>>>not, how can I measure latency?
>>>
>>
>>Using Asterisk is a good way. If you define a phone in sip.conf and
> 
> turn
> 
>>on "qualify=", we will measure the latency for the network between the
>>phone and Asterisk.
>>
>>/O
> 
> 
> Olle
> 
> Qualify= runs one SIP OPTIONS per 60 second interval, right? And then
> only the latest response is shown.
> 
> Not really enough sample points to determine if the network will support
> RTP and no provision for jitter measurements and packet loss.
> 
> I really like the statistics on the cheap Linksys ATAs! - latency,
> jitter, packet loss during an actual call.

For a newbie, it's a start, but you are absolutely right. The work we 
are doing with RTCP support will help in this, measuring quality per 
call. Those of you that wants to test, please go to the bug tracker for 
more information! We need input on what to do with the data, how to 
publish it.

/Olle