[Asterisk-Dev] FWD: Cisco 12SP+ / VIP30 - Works with Asterisk (chan_skinny related)

Steven Critchfield critch at basesys.com
Fri Dec 26 13:20:28 MST 2003

On Fri, 2003-12-26 at 13:27, Leif Madsen wrote:
> On Fri, 2003-12-26 at 08:55, Steven Critchfield wrote:
> > Yep it helped me. My phone needed it changed to P002G204 from P002F202.
> > My warnings where a little different. Asterisk complained about length
> > of message. Once changed all warnings went away. 
> > 
> > Of course I think I found a bug though. It seems that when my 12sp+
> > phone dials out via IAX, my IAX connection has to be ulaw just like the
> > phone. I'm going to look over it a bit later and see if I can get it to
> > be happy with the GSM IAX connection I have.
> Cool.  I talked to Jeremy about this, and he said this is a known bug. 
> I guess when he has some time he is going to make it a configurable
> option.

While I'm playing with the skinny driver, I have uncovered a couple of
annoyances. There seems to be a problem setting capabilities. I made a
crude hack that forces AST_FORMAT_ULAW and it solved some sound quality
issues. Without this hack I couldn't use mp3player. Here was the error
messages before the hack.

Dec 26 13:30:28 WARNING[229391]: File rtp.c, Line 1069 (ast_rtp_write): Not sure about sending format SLINR packets
Dec 26 13:30:28 WARNING[229391]: File rtp.c, Line 934 (ast_rtp_raw_write): Not sure about timestamp format for codec format SLINR

Something still doesn't seem right in that I seem to be having trouble
getting iax to use GSM when I'm using the 12sp+. This may be something
else, and I'm still playing with it. 
Steven Critchfield <critch at basesys.com>

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