[asterisk-users] Problem routing call to fax machine on DAHDI FXS port

Frank Tarczynski ftarz at mindspring.com
Thu Mar 17 22:02:57 CDT 2011


I am running Asterisk 1.6.2.17.2 with a Openvox A400 card with 2FXO/2FXS 
modules.  I'm trying to set-up things to route analog fax calls from a 
FXO port to an analog fax machine on a FXS port on the same card.

Outgoing faxes work just fine.  But incoming faces are routed to the 
right DAHDI  extension, but the call dropped right as the fax machine 
rings for the first time.  The fax machine works fine when connected 
directly to the analog telephone line and I see the same behavior if I 
route the fax call to anyother DAHDI or SIP extension.

Can anyone help?

I see this in the asterisk log:
(Send fax out to HP's fax check line)
[2011-03-17 13:40:17.4] VERBOSE[8825] chan_dahdi.c:     -- Starting 
simple switch on 'DAHDI/1-1'
[2011-03-17 13:40:24.0] VERBOSE[8825] pbx.c:     -- Executing 
[18884732963 at from-fax-machine:1] Set("DAHDI/1-1", 
"CALLERID(num)=19195718465") in new stack
[2011-03-17 13:40:24.0] VERBOSE[8825] pbx.c:     -- Executing 
[18884732963 at from-fax-machine:2] Dial("DAHDI/1-1", 
"DAHDI/4/18884732963") in new stack
[2011-03-17 13:40:24.0] VERBOSE[8825] app_dial.c:     -- Called 
4/18884732963
[2011-03-17 13:40:26.2] VERBOSE[8825] app_dial.c:     -- DAHDI/4-1 
answered DAHDI/1-1
[2011-03-17 13:40:29.6] NOTICE[8825] chan_dahdi.c: Fax detected, but no 
fax extension
[2011-03-17 13:41:13.4] VERBOSE[8825] chan_dahdi.c:     -- Hungup 
'DAHDI/4-1'
[2011-03-17 13:41:13.4] VERBOSE[8825] pbx.c:   == Spawn extension 
(from-fax-machine, 18884732963, 2) exited non-zero on 'DAHDI/1-1'
[2011-03-17 13:41:13.4] VERBOSE[8825] chan_dahdi.c:     -- Hungup 
'DAHDI/1-1'

(Incoming fax attempt)
[2011-03-17 13:43:18.3] VERBOSE[8834] chan_dahdi.c:     -- Starting 
simple switch on 'DAHDI/4-1'
[2011-03-17 13:43:19.3] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:1] Wait("DAHDI/4-1", "1") in new stack
[2011-03-17 13:43:20.4] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:2] Verbose("DAHDI/4-1", "CALLERID is 8884732963") in new 
stack
[2011-03-17 13:43:20.4] VERBOSE[8834] app_verbose.c: CALLERID is 8884732963
[2011-03-17 13:43:20.4] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:3] Verbose("DAHDI/4-1", "Time is 20110317-134320") in new 
stack
[2011-03-17 13:43:20.4] VERBOSE[8834] app_verbose.c: Time is 20110317-134320
[2011-03-17 13:43:20.4] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:4] Answer("DAHDI/4-1", "") in new stack
[2011-03-17 13:43:20.4] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:5] Ringing("DAHDI/4-1", "") in new stack
[2011-03-17 13:43:20.4] VERBOSE[8834] pbx.c:     -- Executing 
[s at from-pstn-4:6] Wait("DAHDI/4-1", "6") in new stack
[2011-03-17 13:43:21.4] VERBOSE[8834] chan_dahdi.c:     -- Redirecting 
DAHDI/4-1 to fax extension
[2011-03-17 13:43:21.4] VERBOSE[8834] pbx.c:   == Spawn extension 
(from-pstn-4, fax, 1) exited non-zero on 'DAHDI/4-1'
[2011-03-17 13:43:21.4] VERBOSE[8834] pbx.c:     -- Executing 
[fax at from-pstn-4:1] NoOp("DAHDI/4-1", "Fax Detected") in new stack
[2011-03-17 13:43:21.4] VERBOSE[8834] pbx.c:     -- Executing 
[fax at from-pstn-4:2] Dial("DAHDI/4-1", "DAHDI/1,40,tr") in new stack
[2011-03-17 13:43:21.4] VERBOSE[8834] app_dial.c:     -- Called 1
[2011-03-17 13:43:21.4] VERBOSE[8834] app_dial.c:     -- DAHDI/1-1 is 
ringing
[2011-03-17 13:43:23.4] VERBOSE[8834] app_dial.c:     -- DAHDI/1-1 is 
ringing

(Call is routed to fax machine, but then dropped before it can answer)
[2011-03-17 13:43:24.8] VERBOSE[8834] chan_dahdi.c:     -- Hungup 
'DAHDI/1-1'
[2011-03-17 13:43:24.8] VERBOSE[8834] pbx.c:   == Spawn extension 
(from-pstn-4, fax, 2) exited non-zero on 'DAHDI/4-1'
[2011-03-17 13:43:24.8] VERBOSE[8834] chan_dahdi.c:     -- Hungup 
'DAHDI/4-1'

My dialplan looks like this:
[from-pstn-4]
exten => fax,1,NoOp(Fax Detected)
exten => fax,2,Dial(DAHDI/1,,rtT)
exten => fax,3,Congestion()
exten => fax,104,Busy()
exten => s,1,Wait(1)
exten => s,n,Verbose(CALLERID is ${CALLERID(num)})
exten => s,n,Verbose(Time is ${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)})
exten => s,n,Answer
exten => s,n,Ringing
exten => s,n,Wait(6)
exten => s,n,Dial(SIP/1000)
exten => s,n,Voicemail(1000,u)
exten => s,n,Hangup

My chan_dahdi.conf file looks like:
[trunkgroups]
;trunkgroup => 1,1
;trunkgroup => 2,2
;trunkgroup => 3,3
;trunkgroup => 4,4

;spanmap => 1,1
;spanmap => 2,2
;spanmap => 3,3
;spanmap => 4,4

[channels]
language=en
context=incoming
toneduration=40
;usedistinctiveringdetection=yes
answeronpolarityswitch=no
usecallerid=yes
cidsignalling=bell
cidstart=ring
;hidecallerid=yes
;hidecalleridname=yes
;waitfordialtone=yes
;mwimonitor=no
;mwilevel=512
;mwimonitornotify=/usr/local/bin/dahdinotify.sh
;mwisendtype=rpas,lrev
callwaiting=yes
;restrictcid=no
usecallingpres=yes
sendcalleridafter = 1
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=2.0
txgain=8.0
group=1
callgroup=1
pickupgroup=1
;immediate=yes
immediate=no
callerid = asreceived
useincomingcalleridondahditransfer = yes
callprogress=no
progzone=us
;faxdetect=both
faxdetect=incoming
;faxdetect=outgoing
;faxdetect=no
faxbuffers=>6,full
;callerid="XXX"<1919XXXXXXX>
;channel => 3
;callerid="XXX"<1919XXXXXXX>
;channel => 4
#include dahdi-channels.conf

My dahdi-channels.conf file look like:
; Autogenerated by /usr/sbin/dahdi_genconf on Tue Nov 30 19:08:07 2010
; If you edit this file and execute /usr/sbin/dahdi_genconf again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is 
intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global 
settings
;

; Span 1: WCTDM/4 "Wildcard TDM400P REV E/F Board 5" (MASTER)
;;; line="1 WCTDM/4/0 FXOKS  (In use) (SWEC: MG2)"
signalling=fxo_ks
callerid="Channel 1" <4001>
mailbox=5000
group=5
context=from-fax-machine
channel => 1
callerid=
mailbox=
group=
context=default

;;; line="2 WCTDM/4/1 FXOKS  (In use) (SWEC: MG2)"
signalling=fxo_ks
callerid="Channel 2" <4002>
mailbox=6000
group=5
context=from-internal
channel => 2
callerid=
mailbox=
group=
context=default

;;; line="3 WCTDM/4/2 FXSKS  (In use) (SWEC: MG2)"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn-3
channel => 3
callerid=
group=
context=default

;;; line="4 WCTDM/4/3 FXSKS  (In use) (SWEC: MG2)"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn-4
channel => 4
callerid=
group=
context=default







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