[cisco-voip] Audio Codec

[Ahmed Elnagar]

No the Phones doesnot negotiate. I have a H323 trunk thorugh a gatekeeper which ends to a gateway using alaw. what happens is that the Phone runs with ulaw and the callmanager is doing the conversion for it. if I disconnect the callmanager the call is muted so I conclude from this that the callmanger is doing something for the call. also BTW I cheched the call on the gateway and I find it using alaw so there is a conversion from ulaw to alaw happening on the CM.
 
Thanks and Best Regards

Ahmed A. Elnagar
Network Field Engineer
 
Advanced Computer Technology (ACT)
16 Fawzy Ramah St.Off Shehab St.Mohandessin, Giza, Egypt 
Postal Code:12411 Cairo Egypt

Mob: +2010-2833868
Website: www.act-eg.com
E-mail: aelnagar at act-eg.com

________________________________

From: Kris Seraphine [mailto:baryonyx5 at gmail.com]
Sent: Wed 28-Mar-07 5:18 PM
To: Ahmed Elnagar
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Audio Codec


That's a good question.  I thought it would be a service parameter but I don't see one.  

I think the phone will automatically negotiate with the gateway to choose the alaw or ulaw but I don't know this for sure.  

Maybe you can't change the companding type for IP phone to IP phone calls.


On 3/26/07, Ahmed Elnagar < aelnagar at act-eg.com <mailto:aelnagar at act-eg.com> > wrote: 

	Hello all;
	 
	anybody knows how to change the Audio codec of IP Phones from G.711u to G.711a. this is not available from region configuration all I can set is just G.711. any ideas (I am using CM ver 4.1(3)sr2)
	 
	
	Thanks and Best Regards
	
	Ahmed A. Elnagar
	Network Field Engineer 
	 
	Advanced Computer Technology (ACT)
	16 Fawzy Ramah St.Off Shehab St.Mohandessin, Giza, Egypt 
	Postal Code:12411 Cairo Egypt
	
	Mob : +2010-2833868
	Website: www.act-eg.com <http://www.act-eg.com/> 
	E-mail: aelnagar at act-eg.com

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-- 
kris seraphine 
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