[asterisk-users] CDMA Phones

[Robor Oghene]

Thanks for your response

*Which of the codecs supported on asterisk is best for GSM and CDMA phones
connecting over sip?*

On Fri, May 30, 2008 at 8:34 PM, Steve Underwood <steveu at coppice.org> wrote:

> 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
>
>
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