Shamus,
Great description, I think you have a finger on the problem. I'm not sure
NVFaxDetect() is the problem, but definitely is in the path.
Do you understand why your Dial(IAX2/iaxmodem) is failing with BUSY?
If you can, disable the iaxmodem call
exten => fax,1,Hangup
and see if the segfaults go away.
Lonnie
On Jan 17, 2011, at 8:08 PM, Shamus Rask wrote:
> I got another segfault error and had a chance to try what you've suggested:
> -> there are no read/write errors in messages, so confirmed CF card
> should still be good
> -> I do have CURL() in extensions.conf, however that context had not
> been called at the time of the error
> -> I was able to restart Asterisk from the Network tab (thanks for the tip!)
>
> So, on my last error, I pulled the following lines from /var/log/messages:
> Jan 17 10:25:27 pbx daemon.info ntpd[1619]: synchronized to LOCAL(0), stratum
> 5
> Jan 17 10:26:32 pbx daemon.info ntpd[1619]: synchronized to
> 209.139.209.82, stratum 2
> Jan 17 20:21:52 pbx user.info kernel: asterisk[1720]: segfault at
> 61313737 ip 400a5625 sp be9fb49c error 4 in
> libuClibc-0.9.28.so[4006e000+44000]
>
> With the ~10h difference between the last message and the sefault, I
> don't think they're related.
>
> I was also able to see the following in /var/log/asterisk/messages
> [Jan 17 20:21:51] NOTICE[2310] app_nv_faxdetect.c: Redirecting
> IAX2/outbound-unlimitel-6560 to fax extension
> [Jan 17 20:21:51] NOTICE[2310] channel.c: Dropping incompatible voice
> frame on IAX2/outbound-unlimitel-6560 of format slin since our native
> format has changed to 0x4 (ulaw)
> [Jan 17 20:21:51] WARNING[1837] chan_iax2.c: Call rejected by 192.168.2.3:
> Busy
>
> This is making me think I'm being "spam faxed" and it is NVfaxDetect
> causing the problems.
>
> Background:
> I have a single IAX2 trunk. I use this for both voice and fax. For an
> incoming call, I don't ring the internal extensions for 4s but use
> NVfaxdetect to see if it is a fax; if it is, the fax is passed to a
> second server running hylafax:
> exten => xxxxxxxx,n,Answer
> exten => xxxxxxxx,n,NVFaxDetect(4|t)
> exten =>
> xxxxxxxx,n,Dial(${7941_C}&${9133_K}&${GIGA1}&${IPHONE}&${ZAP1}&${MOBILE},20,okt)
> exten => xxxxxxxx,n,VoiceMail(u501@default)
>
> exten => fax,1,Dial(IAX2/iaxmodem)
>
>
> I'm assuming the second message in /var/log/asterisk/messages is
> causing the problem? In iax.conf I do have the following statement:
> disallow=all
> allow=ulaw
>
> Am I missing something else?
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