[asterisk-users] Problem with detecting fax on PRI/DAHDI channels

[Sawan Vithlani]

[trunkgroups]

[channels]
switchtype=qsig
context = from-pstn
group = 0
signalling = pri_cpe
channel = 1-15,17-31,32-46,48-62,63-77,79-93,94-108,110-124

usecallingpres=yes
sendcalleridafter = 2
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain = 0.0
txgain = 0.0
group=1
callgroup=1
pickupgroup=1
faxdetect=both

#include /etc/asterisk/dahdi-channels.conf

Sawan

On Fri, Jun 24, 2011 at 12:15 AM, Eric Wieling <EWieling at nyigc.com> wrote:
>
>> -----Original Message-----
>> From: asterisk-users-bounces at lists.digium.com
>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
>> Sawan Vithlani
>> Sent: Thursday, June 23, 2011 10:12 AM
>> To: asterisk-users at lists.digium.com
>> Subject: [asterisk-users] Problem with detecting fax on
>> PRI/DAHDI channels
>>
>> Hello all,
>>
>> I am using  call files to dial out to a set of PSTN numbers.
>> The calls are going out fine and being handled correctly by
>> the dial plan.
>>
>> The problem occurs when I accidentally call a fax machine. I
>> would expect the dial plan to pick this up and jump to the
>> "fax" extension in the current context. This is not happening.
>>
>> In the call file I send the call out via
>> Dial(DAHDI/g0/XXXXXXXX) and then it goes to my dial plan context:
>>
>> [SendCall]
>> exten => start,1,Answer()
>>    same => n, Wait(5)
>>    same => n, ..... ;; do some more stuff
>>
>> exten => fax,1,Verbose(got a Fax on ${EXTEN}) same =>n, Hangup()
>>
>> ;;;;
>>
>>  I do get a message on the CLI telling me "Channel 63
>> detected a CED tone from the network" but still no jumping to
>> the fax extension.
>> This is while dialplan is in the Wait(5).
>>
>> CLI> core show version
>> Asterisk 1.8.4.1-1digium1~natty built by pbuilder @ nighthawk on a
>> x86_64 running Linux on 2011-05-23 22:05:17 UTC
>>
>> ISDN lines connected via Digium TE412P card.
>>
>> I have "faxdetect = both" in chan_dahdi.conf in the general
>> section as well as specifically for the configured spans.
>
> Show us your chan_dahdi.conf
>
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