[asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

[Steve Underwood]

On 01/06/2011 01:04 AM, Tilghman Lesher wrote:
> On Wednesday 05 January 2011 07:07:10 Steve Underwood wrote:
>> On 01/05/2011 03:29 PM, Bruce B wrote:
>>> Hi Everyone,
>>>
>>> 1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
>>> 2- Are these codecs only for Polycom units or are they universal
>>> across all other SIP phones that advertise the HD voice codec like
>>> Aastra? 3- What is the main difference between the two and is it
>>> advisable to run these over the INTERnet (not INTRAnet)?
>> The G.722 codec in * is G.722. The Siren7 codec in * is probably not
>> Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
>> different code in the SDP and has some minor differences in the codec.
>> The name G.722.1 may look similar to G.722, but the codecs bear no
>> relation to each other. The Siren14 codec in * is probably not Siren14,
>> but G.722.1C. G.722.1C is very similar to Siren14, but like
>> Siren7/G.722.1 the SDP code is different, and there are minor
>> differences in the codec.
> The Siren7 and Siren14 codecs in Asterisk are licensed code from Polycom,
> so they are indeed the Siren7 and Siren14 codecs.  They will interoperate
> with any other vendor who has licensed those codecs from Polycom.
What Polycom licence to everyone is actually G.722.1 and G.722.1C. Been 
there. Done that.

Steve