[asterisk-users] Fwd: RTP stats explaination
Kevin P. Fleming
kpfleming at digium.com
Fri May 18 14:09:04 CDT 2012
On 05/18/2012 12:51 PM, Steve Edwards wrote:
> On Fri, 18 May 2012, Dave Platt wrote:
>
>> A maximum jitter of 230 milliseconds looks pretty horrendous to me.
>> This is going to cause really serious audio stuttering on the
>> receiving side, and/or will force the use of such a long "jitter
>> buffer" by the receiver that the audio will suffer from an infuriating
>> amount of delay. Even a local call would sound as if it's coming from
>> overseas via a satellite-radio link.
>
> Won't a cell-to-cell call experience delays in the 300ms range?
>
> Many moons ago I remember listening with a cell while tapping on the
> table with another cell and being stunned with the magnitude of the
> delay and that most people manage to carry on conversations without
> noticing.
Yes, cellular networks have largish latencies, but no jitter.
--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org
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