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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Hi everyone,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>I have an issue which is kind
of a catch 22 situation. I had outgoing calls to my new PSTN provider working
perfectly. Then I started focussing on incoming calls. It seems that I can
solve an error which gets my incoming calls working but that in turns means my
outgoing calls don’t work. – Strange.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Anyhow I was getting an
error: <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span lang=EN-IE
style='font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Process_sdp</span></font></span><font
size=2 face=Arial><span lang=EN-IE style='font-size:10.0pt;font-family:Arial;
mso-ansi-language:EN-IE'>: No compatible <span class=SpellE>codecs</span>! <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>And from the SIP debug I
could see that the incoming SIP INVITE was getting a sip response of 488
Unacceptable here from my asterisk server. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>After doing a bit of
searching I determined that this might be the fault of the codec’s
particularly the G729 codec. So in the peer block that I have for my PSTN
provider in my sip conf I specified allow=g729.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>I called my PSTN geographic
number again and was delighted when the incoming calls worked. However when I
next went to make an outgoing call (after having added in the “allow=g729”
line), I got an infinite loop of warnings:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>WARNING: <span class=SpellE>chan_sip.c</span>:
2520 <span class=SpellE>sip_write</span>: Asked to transmit frame type 256,
while native formats is 8 (read/write = 8/8)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>WARNING: codec_gsm.c165 <span
class=SpellE>gsmtolin_framein</span>: Huh? A GSM frame that isn’t a
multiple of 33 or 65 bytes long from RTP<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>After those warnings I
thought there might be a problem with the <span class=SpellE>gsm</span> codec
so I commented the lines containing “allow=<span class=SpellE>gsm</span>”
and still kept the line “allow=g729” because as I’ve said
already incoming calls won’t work otherwise (but outgoing will).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>This however just gave
another warning:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>WARNING: <span class=SpellE>chan_sip.c</span>:
2520 <span class=SpellE>sip_write</span>: Asked to transmit frame type 4 while
native formats is 256 (read/write=64/64).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>When I comment this line out
again I am back to my original situation where outgoing calls work and incoming
don’t.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Has anyone any idea how I can
work around this?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-IE style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Many thanks in advance,<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-IE
style='font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-IE'>Aisling.</span></font></span><font
size=2 face=Arial><span lang=EN-IE style='font-size:10.0pt;font-family:Arial;
mso-ansi-language:EN-IE'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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