[cisco-voip] Optimizing RTP on the WAN.

[Wes Sisk]

Use this and tweak to your heart's content:

http://tools.cisco.com/Support/VBC/do/CodecCalc1.do

generally only options are:
1. low bit rate codec, lower general voice quality
2. cRTP, higher router CPU utilization
3. increased packetization period/decreased packets per second, lost/ 
late packets impact audio stream more.  also some compatibility  
issues depending on how large you go.  Older versions of Unity did  
not support over 20msec g729. ex: CSCuk52490

/Wes

On Nov 10, 2006, at 3:55 PM, Scott ODonnell wrote:

I have a customer that is getting clobbered high WAN utilitization  
due to RTP streams.
While I recognize that at some point you just need more bandwidth are  
there any other ways to reduce the bandwidth RTP requires beyond  
codec selection and CRTP?

I vaguely remember back in the old "toll bypass" days, you could  
adjust the number of samples per packet or the sample rate and it  
could make a real difference in the bandwidth.

Any knobs like that in CallManager?

Scott

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