Hi all,
I have a system installation in Guam with two trunks. One has a DSL service
riding on it with the usual filter. That channel however keeps throwing
alarms. I bypassed the filter and it stopped throwing alarms, but of course
the high frequencies annoy the users. I swapped the filters and the alarms
came back.

Any suggestions? Could I have a bad DSL modem?

Cassius

OK, after my last message about fax detection, I feel a bit better informed and able to press forward. I started looking into this because I was getting lots of false positive fax detection errors in the logs with faxdetect=both set in chan_dahdi.conf.

Anyhow, I do not currently use fax detection, and we have a dedicated Fax DID on our PRI, so setting faxdetect=no works fine. Having said that, I would like to sort it out as I may want to use fax detection in the future. Unfortunately, I seem to be having odd results. I set faxdetect=incoming last night and restarted dahdi and asterisk. Since that time, we have received 17 faxes, but I only have three fax detections in my asterisk log, so far as I can tell:

# grep -i fax /var/log/asterisk/full
[Jan 5 05:53:39] NOTICE[6686] chan_dahdi.c: Fax detected, but no fax extension
[Jan 5 10:24:27] NOTICE[11834] chan_dahdi.c: Fax detected, but no fax extension
[Jan 5 11:48:52] NOTICE[13804] chan_dahdi.c: Fax detected, but no fax extension

All three calls listed are indeed fax calls, and since there is no fax extension in that context, the call just proceeds along as if nothing happened (which is appropriate).

My question is this: If I have received 17 faxes since enabling fax detection, shouldn’t I see ~17 entries in the log?

Assuming the answer to that question is yes, what might be causing the system to not detect faxes on the other 14 calls?

Many thanks,

Tom

For some reason our Asterisk box is doing something really unusual following applying a routine update to CentOS 5 on Monday.

We have Asterisk 1.4.2 and its been working great for years. But now when the phone system receives an incoming SIP call, its not providing any audible dial sound to any caller. It is recognizing the incoming call, and after no answer for about 5 rings or so, it goes to voice mail. But there is no audible ‘ring’ to the caller. Just nothing – blank, empty silence.

Of course any automated answering system (ie. business phone menu, etc.) that we have works just fine. Its just the lines that go directly to an internal phone that are no longer providing any audible ring which is sending a message to the caller that their call didn’t go through.

Does anyone have any idea what might cause this?

Myles

See the following SIP trace.
Where in the world does Asterisk get port 1025 to respond to?
This is asterisk 1.6.x.

Thanks.

Hi !
I ma having trouble with my PTSN line. When I call to my asterisk I get this..