[Freeswitch-users] Grandstream

[jocke eriksson]

This worked great! Thank you so much.

Regards Jocke

2008/9/22 Lucas Cornelisse <lucas at johnnyvoip.com>

> Hi Jocke,
>
> We've got a few Grandstream Budgetone 200's that do the same thing.
> Apparently it's negotiating the 7th codec in its list of preferred codecs.
>
> Our workaround was to go into the web interface and set all the codecs to
> the same thing (PCMU for instance).
>
> -lc
>
>
>
> On Mon, Sep 22, 2008 at 3:42 AM, Brian West <brian at freeswitch.org> wrote:
>
>> I highly recommend you report this go grandstream.  I have already
>> done so once and that was 6 months ago.  I can't believe this problem
>> still exists.
>>
>> While G722 is a 16k codec the SDP and clock should be at 8k.  This is
>> due to a bug in the RFC.
>>
>> RFC3551 section 4.5.2 clarifies this information.
>>
>>    Even though the actual sampling rate for G.722 audio is 16,000 Hz,
>>    the RTP clock rate for the G722 payload format is 8,000 Hz because
>>    that value was erroneously assigned in RFC 1890 and must remain
>>    unchanged for backward compatibility.  The octet rate or sample-pair
>>    rate is 8,000 Hz.
>>
>> Aastra also does G722 incorrectly.
>>
>> Snom and Polycom  work great.
>>
>> /b
>>
>> On Sep 22, 2008, at 2:32 AM, jocke eriksson wrote:
>>
>> > Hello Freeswitch users, I'm having some trouble with a Grandstream
>> > phone of mine. Each time i try to call it up and stream a file to it
>> > Freeswitch prints this
>> > ' Codec G722 Exists but not at the desired implementation. 16000hz
>> > 20ms '. Does anybody use Granstream GXP-2000 and now how to fix it,
>> > or can i modify Freeswitch to except this codec , all help is
>> > appreciated .
>> >
>> > Regards Jocke
>> >
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>
>
>
> --
> Lucas Cornelisse
> CTO JohnnyVoIP
> lucas at johnnyvoip.com
> 613.219.9331
>
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