[cisco-voip] Moving to SIP

Cristobal Priego cristobalpriego at gmail.com
Sun Sep 25 16:30:13 EDT 2011


I think this is an AT&T limitation or as you just mention they want to  
save bw. I havent work with them on sip trunks however L3, verizon and  
other ITSP's support both codecs.

Enviado desde mi iPhone

El Sep 25, 2011, a las 11:21, Bill Simon <bills at psu.edu> escribió:

> Someone please explain why the codec needs to change from G.711u to  
> G.729 simply because of a transition from PRI to SIP?
>
> Does AT&T's SIP service not support G.711? Or are you simply trying  
> to squeeze more channels onto limited bandwidth? (Get more bandwidth.)
>
>
> On 9/24/11 12:38 PM, Jason Aarons (AM) wrote:
>>
>> The larger you are the more advantages.  For small business I agree  
>> sticking with PRI since you can get them dirt cheap.  For example  
>> bank with 700 branches can see a 14 month ROI versus fractional  
>> PRIs across all those sites, more mpls bandwidth to branch for  
>> video/digital signage, fewer hardware costs, etc.
>>
>>
>> From: Lelio Fulgenzi [mailto:lelio at uoguelph.ca]
>> Sent: Saturday, September 24, 2011 11:53 AM
>> To: Jason Aarons (AM)
>> Cc: Haas, Neal; cisco-voip at puck.nether.net
>> Subject: Re: [cisco-voip] Moving to SIP
>>
>> Anyone else have the feeling SIP isn't all it's cracked up to be?  
>> In our case, if you're not already getting Internet service from  
>> your your SIP provider, it's just not that economical. Especially  
>> if you have to keep a PRI around for faxing, modems, alarms, etc.
>>
>> Sent from my iPhone
>>
>> On Sep 24, 2011, at 10:51 AM, "Jason Aarons (AM)" <jason.aarons at dimensiondata.com 
>> > wrote:
>>
>> Yes faxing/modem/postage won’t work. Look into separate device poo 
>> ls for g711 stuff, etc.
>>
>>
>> From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip- 
>> bounces at puck.nether.net] On Behalf Of Haas, Neal
>> Sent: Friday, September 23, 2011 6:27 PM
>> To: cisco-voip at puck.nether.net
>> Subject: [cisco-voip] Moving to SIP
>>
>>
>>
>> We are moving to (ATT) SIP from standard PRI’s, of course we just  
>> realized that our unity is G711.
>>
>> Are there any gotchas by just changing the General Configuration to  
>> G729a?
>>
>
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