[cisco-voip] Jitter Question

[J. Oquendo]

STEVEN CASPER wrote:
> Couple of Jitter questions:
>
> What would be considered excessive Positive and Negative Jitter? 
> Are there different acceptable jitter levels based on Codec type?
>
> Thanks!
>
As per Cisco Press DQoS

*1-Way Delay (in ms) / Description*
0–150 ITU G.114’s recommended acceptable range
0–200 Cisco’s recommended acceptable range
150–400 ITU G.114’s recommended range for degraded service
400+ ITU G.114’s range of unacceptable delay in all cases


*Bandwidth Consumption, Including L2 Overhead*

Codec: 802.1q PPP MLP Frame Relay ATM
G.711 at 50 pps* 93 kbps 84 kbps 86 kbps 84 kbps 106 kbps
G.711 at 33 pps 83 kbps 77 kbps 78 kbps 77 kbps 84 kbps
G.729A at 50 pps 37 kbps 28 kbps 30 kbps 28 kbps 43 kbps
G.729A at 33 pps 27 kbps 21 kbps 22 kbps 21 kbps 28 kbps


-- 
====================================================
J. Oquendo
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743
sil . infiltrated @ net http://www.infiltrated.net 

The happiness of society is the end of government.
John Adams

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