<div dir="ltr">Hi Jocke,<br><br>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.<br><br>Our workaround was to go into the web interface and set all the codecs to the same thing (PCMU for instance).<br>
<br>-lc<br> <br><br><div class="gmail_quote">On Mon, Sep 22, 2008 at 3:42 AM, Brian West <span dir="ltr"><<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I highly recommend you report this go grandstream. I have already<br>
done so once and that was 6 months ago. I can't believe this problem<br>
still exists.<br>
<br>
While G722 is a 16k codec the SDP and clock should be at 8k. This is<br>
due to a bug in the RFC.<br>
<br>
RFC3551 section 4.5.2 clarifies this information.<br>
<br>
Even though the actual sampling rate for G.722 audio is 16,000 Hz,<br>
the RTP clock rate for the G722 payload format is 8,000 Hz because<br>
that value was erroneously assigned in RFC 1890 and must remain<br>
unchanged for backward compatibility. The octet rate or sample-pair<br>
rate is 8,000 Hz.<br>
<br>
Aastra also does G722 incorrectly.<br>
<br>
Snom and Polycom work great.<br>
<br>
/b<br>
<div><div></div><div class="Wj3C7c"><br>
On Sep 22, 2008, at 2:32 AM, jocke eriksson wrote:<br>
<br>
> Hello Freeswitch users, I'm having some trouble with a Grandstream<br>
> phone of mine. Each time i try to call it up and stream a file to it<br>
> Freeswitch prints this<br>
> ' Codec G722 Exists but not at the desired implementation. 16000hz<br>
> 20ms '. Does anybody use Granstream GXP-2000 and now how to fix it,<br>
> or can i modify Freeswitch to except this codec , all help is<br>
> appreciated .<br>
><br>
> Regards Jocke<br>
><br>
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</blockquote></div><br><br clear="all"><br>-- <br>Lucas Cornelisse<br>CTO JohnnyVoIP<br><a href="mailto:lucas@johnnyvoip.com">lucas@johnnyvoip.com</a><br>613.219.9331<br>
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