asterisk users - Mar 2009 - Asterisk 1.6 ReceiveFAX problem

hi,all
i have just set up asterisk 1.6.0.7 rc1 with spandsp 0.0.5 pre4 to ReceiveFAX,
link to a E1 (DE410P) using dahdi
this can receive the fax from E1 successfully, but i see many error message in
the log like this:

[Mar 16 09:24:38] ERROR[23540] channel.c: ast_read() called with no recorded
file descriptor.
 
when i receive a 5 pages fax, i will see this error message over 200 lines.....
 
it seems the  channel.c try to call ast_read(), read some bytes from the channel
but there is nothing ...
whether it's a loop to check data on the channel ?
 
 
and many times when reciving tax , the E1 card will down , all the channel get
red alarm...
 
[Mar 16 09:49:19] DEBUG[20928] chan_dahdi.c: Monitor doohicky got event Alarm on
channel 2
[Mar 16 09:49:19] WARNING[20928] chan_dahdi.c: Detected alarm on channel 2:
Recovering
 
 
i then try asterisk 1.4.23.2 and agx-ast-addon , when using  spandsp 0.0.5 and
spandsp 0.0.6, like above , sometimes all E1 channel get red alarm when reciving
fax....
but use spandsp 0.0.4 get no error...
 
some one can tell me what version of asterisk and spandsp is the best version
for fax???

thanks a lot.
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asterisk 1.4.23.2 and spandsp 0.0.4 get the same error now....but less times
than other version ...
 
[Mar 16 10:12:50] DEBUG[23749]: chan_dahdi.c:7115 do_monitor: Monitor doohicky
got event Alarm on channel 1
[Mar 16 10:12:50] DEBUG[23752]: chan_dahdi.c:4731 __dahdi_exception: Exception
on 11, channel 4
[Mar 16 10:12:50] DEBUG[23752]: chan_dahdi.c:3828 dahdi_handle_event: Got event
Alarm(4) on channel 4 (index 0)
[Mar 16 10:12:50] NOTICE[23748]: chan_dahdi.c:8704 pri_dchannel: PRI got event:
HDLC Abort (6) on Primary D-channel of span 1
[Mar 16 10:12:50] WARNING[23749]: chan_dahdi.c:3787 handle_alarms: Detected
alarm on channel 1: Red Alarm
[Mar 16 10:12:50] DEBUG[23748]: chan_dahdi.c:8715 pri_dchannel: Got event HDLC
Abort (6) on D-channel for span 1
[Mar 16 10:12:50] WARNING[23749]: chan_dahdi.c:1507 dahdi_disable_ec: Unable to
disable echo cancellation on channel 1: Invalid argument
[Mar 16 10:12:50] NOTICE[23748]: chan_dahdi.c:8704 pri_dchannel: PRI got event:
Alarm (4) on Primary D-channel of span 1
[Mar 16 10:12:50] DEBUG[23749]: chan_dahdi.c:7115 do_monitor: Monitor doohicky
got event Alarm on channel 2
[Mar 16 10:12:50] WARNING[23748]: chan_dahdi.c:2486 pri_find_dchan: No
D-channels available!  Using Primary channel 16 as D-channel anyway!
[Mar 16 10:12:50] DEBUG[23748]: chan_dahdi.c:8715 pri_dchannel: Got event Alarm
(4) on D-channel for span 1
[Mar 16 10:12:50] WARNING[23749]: chan_dahdi.c:3787 handle_alarms: Detected
alarm on channel 2: Red Alarm
[Mar 16 10:12:50] WARNING[23749]: chan_dahdi.c:1507 dahdi_disable_ec: Unable to
disable echo cancellation on channel 2: Invalid argument
[Mar 16 10:12:50] DEBUG[23749]: chan_dahdi.c:7115 do_monitor: Monitor doohicky
got event Alarm on channel 3
[Mar 16 10:12:50] WARNING[23749]: chan_dahdi.c:3787 handle_alarms: Detected
alarm on channel 3: Red Alarm
 
.......
 
 
the chan_dahdi.conf :
[channels]
language=en
context=default
switchtype=euroisdn
pridialplan=unknown
prilocaldialplan=national
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=no
relaxdtmf=no
rxgain=0
txgain=0
group=1
callgroup=1
pickupgroup=1
immediate=no
callerid=asreceived
callprogress=no
channel => 1-15,17-31

the /etc/dahdi/system.conf:
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
dchan=16
echocanceller=mg2,1-15,17-31
loadzone        = cn
defaultzone     = cn
 
 
versions i try ....
asterisk 1.4.23.2 / 1.6.0.6 / 1.6.0.7rc1
libpri 1.4.9
spandsp 0.0.4pre15 / 0.0.5pre4 / 0.0.6pre3 / 0.0.6pre6
dahdi 2.1.0.4+2.1.0.2
 

?2009-03-16 09:57:18?MaxGao <ssmax at 126.com> ???

hi,all
i have just set up asterisk 1.6.0.7 rc1 with spandsp 0.0.5 pre4 to ReceiveFAX,
link to a E1 (DE410P) using dahdi
this can receive the fax from E1 successfully, but i see many error message in
the log like this:

[Mar 16 09:24:38] ERROR[23540] channel.c: ast_read() called with no recorded
file descriptor.
 
when i receive a 5 pages fax, i will see this error message over 200 lines.....
 
it seems the  channel.c try to call ast_read(), read some bytes from the channel
but there is nothing ...
whether it's a loop to check data on the channel ?
 
 
and many times when reciving tax , the E1 card will down , all the channel get
red alarm...
 
[Mar 16 09:49:19] DEBUG[20928] chan_dahdi.c: Monitor doohicky got event Alarm on
channel 2
[Mar 16 09:49:19] WARNING[20928] chan_dahdi.c: Detected alarm on channel 2:
Recovering
 
 
i then try asterisk 1.4.23.2 and agx-ast-addon , when using  spandsp 0.0.5 and
spandsp 0.0.6, like above , sometimes all E1 channel get red alarm when reciving
fax....
but use spandsp 0.0.4 get no error...
 
some one can tell me what version of asterisk and spandsp is the best version
for fax???

thanks a lot.



?????????????????
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On Sun, Mar 15, 2009 at 9:57 PM, MaxGao <ssmax at 126.com>
wrote:
> and many times when reciving tax , the E1 card will down , all the channel
> get red alarm...
>
> [Mar 16 09:49:19] DEBUG[20928] chan_dahdi.c: Monitor doohicky got event
> Alarm on channel 2
> [Mar 16 09:49:19] WARNING[20928] chan_dahdi.c: Detected alarm on channel 2:
> Recovering
You shouldn't be getting red alarms on your lines. Maybe a wiring or
voltage problem?
Or maybe a dahdi soft config that isn't correct for the lines?
Or whatever you're plugging into on the other end is having problems?

Do you plug from the phone company straight into the DE410P?

A fax is just a phone call with tones that represent data. If you were
doing voice you would probably be having the same problem. Work on
getting calls in without getting the red alarms. I don't think there's
any link between SpanDSP versions and red alarms on your card.

MaxGao wrote:
> hi,all
> i have just set up asterisk 1.6.0.7 rc1 with spandsp 0.0.5 pre4 to 
> ReceiveFAX, link to a E1 (DE410P) using dahdi
> this can receive the fax from E1 successfully, but i see many error 
> message in the log like this:
>
> [Mar 16 09:24:38] ERROR[23540] channel.c: ast_read() called with no 
> recorded file descriptor.
> when i receive a 5 pages fax, i will see this error message over 200 
> lines.....
> it seems the channel.c try to call ast_read(), read some bytes from 
> the channel but there is nothing ...
> whether it's a loop to check data on the channel ?
> and many times when reciving tax , the E1 card will down , all the 
> channel get red alarm...
> [Mar 16 09:49:19] DEBUG[20928] chan_dahdi.c: Monitor doohicky got 
> event Alarm on channel 2
> [Mar 16 09:49:19] WARNING[20928] chan_dahdi.c: Detected alarm on 
> channel 2: Recovering
> i then try asterisk 1.4.23.2 and agx-ast-addon , when using spandsp 
> 0.0.5 and spandsp 0.0.6, like above , sometimes all E1 channel get red 
> alarm when reciving fax....
> but use spandsp 0.0.4 get no error...
> some one can tell me what version of asterisk and spandsp is the best 
> version for fax???
> thanks a lot.
Red alarms have nothing whatsoever to do with FAXing, or even Asterisk. 
They only relate to the state of the line, the card, and the 
dahdi/zaptel drivers. You'd better sort that out before expecting any 
application to work.

Regards,
Steve