[asterisk-users] CDMA Phones

[Steve Underwood]

Julio Arruda wrote:
> Steve Underwood wrote:
>   
>> Robor Oghene wrote:
>>     
>>> Hi,
>>>
>>> Do CDMA phones use the gsm codec?
>>>       
>> Even GSM phones rarely use the GSM 06.10 codec that is in Asterisk these 
>> days. CDMA never did.
>>     
>
> Isn't AMR supposed to be the codec used in GSM nowadays ? I remember 
> seeing something like this in Nortel PVG/Packet Trunking for GSM, 
> AMR/AMR-HR or something like that.
>   
AMR can be used with 2G GSM, but is most commonly used with 3G UMTS 
(along with AMR-WB, the wide band version). The commonest codecs for GSM 
are the EFR (enhanced full rate) and HR (half rate) codecs.

Steve