[asterisk-users] how to find out one way latency

Steve Edwards asterisk.org at sedwards.com
Wed Nov 30 16:12:41 CST 2011


> Am 30.11.2011 21:47, schrieb NaJIm:

>> Ping request to their IP Address gives me a response in approx. 260ms.

>> Will that be good enough for a SIP Trunk.

On Wed, 30 Nov 2011, Ruben Rögels wrote:

> a ping is the time a packet needs for travelling to a destination and
> back to you. So the one way latency you are refering to, should be half
> the time your ping took.
>
> In your case this will be 130ms, I would say this is still reasonable.

'Ping time' is not an accurate predictor of SIP quality.

A 'ping' is an ICMP Echo/reply packet and some routers consider them less 
important than 'data' packets and service them on an 'as resources permit' 
basis.

-- 
Thanks in advance,
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Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000


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