[Asterisk-Users] Problems with fax failing when bridged across TDM400Pvers E

Mon Nov 21 16:22:01 MST 2005

Hi,

Okay I tried what you suggested and bummer I get 99.987793%. So how do 
you handle faxes.. We want to use a fax machine and make the line 
available for voice when the fax is not used which is not much. We use a 
trunk dial setup for this which works great. I am all ears there must be 
a way to fix this??

Thanks

Rich Adamson wrote:

>Try running /usr/src/zaptel/zttest -v and see what you get for results.
>If you get something like this:
> Opened pseudo zap interface, measuring accuracy...
> 8192 samples in 8191 sample intervals 99.987793% 
> 8192 samples in 8191 sample intervals 99.987793% 
>where the intervals are less then 100%, then the problem is the same
>issue we've all been fighting for some time. The less then 100% is
>indicative of 'missed frames' of data from the TDM card to the zaptel
>drivers (eg, pci bus).
>
>Fax modem transmissions will never succeed if that number is less then
>100%. I can't get 100% out of my system regardless of what I've tried,
>including two different distro's, two different MBs, etc.
>
>Rich
>
>------------------------
>
>  
>
>>H,
>>
>>We have a fax machine connected to a FXS modules on TDM400P card. There 
>>is an FXO module connected to a pots line. We can receive faxes okay but 
>>we seem to be having trouble sending them. The connection is bridged 
>>between the appropriate ZAP channels but it just hangs there. The remote 
>>fax answers and the fax machine indicates that it is connecting - but 
>>then we get transmission errors and the fax fails. I had tuned the line 
>>to get rid echos using ./ztmonitor (works great by the way) could I have 
>>tuned it too much or should I tune each channel separately (you can see 
>>my rxgain and txgain settings in zapata.conf)? Here are my files.
>>
>>************
>>zapata.conf
>>
>>[trunkgroups]
>>
>>[channels]
>>echocancel=yes
>>echocancelwhenbridged=yes
>>echotraining=yes
>>rxgain=14.0
>>txgain=4.0
>>usecallerid=yes
>>hidecallerid=no
>>callwaiting=no
>>threewaycalling=no
>>transfer=no
>>immediate=no
>>faxdetect=both
>>
>>context=incoming-home
>>signalling=fxs_ks
>>group=1
>>channel => 1,2
>>
>>context=local
>>signalling=fxo_ks
>>group=2
>>channel => 3
>>
>>context=longdistance
>>signalling=fxo_ks
>>group=3
>>channel => 4
>>
>>***********************************
>>extensions.conf
>>
>>[general]
>>#include macros.incl
>>
>>[incoming-home]
>>exten => s,1,Goto(extensions-home,100,1)
>>exten => t,1,Goto(extensions-home,100,1)
>>exten => i,1,Goto(extensions-home,100,1)
>>
>>[extensions-home]
>>include => parkedcalls
>>
>>;Operator queue, Operator Console, and Receptionist Phone
>>exten => 100,1,Answer()
>>exten => 100,2,Queue(extensions-home|trn|||120)
>>
>>;Office Personnel
>>exten => _30[0-1],1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => _31[0-4],1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => _399,1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => _40[0-1],1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => _499,1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>
>>;Spa Personnel
>>exten => _500,1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => _51[0-2],1,Macro(stdexten,${EXTEN},SIP/${EXTEN})
>>exten => 590,1,Dial(ZAP/3,20)
>>
>>;Voicemail Main
>>exten => 800,1,Answer
>>exten => 800,2,VoicemailMain
>>
>>;Agent Login
>>exten => 801,1,AgentCallbackLogin(,, at extensions-home)
>>
>>;Voice Conferencing
>>exten => _85X,1,Answer
>>exten => _85X,2,MeetMe(${EXTEN})
>>
>>;exten => i,1,Voicemail(s300)
>>;exten => t,1,Voicemail(s300)
>>
>>exten => fax,1,Dial(ZAP/4,20)
>>exten => fax,2,Congestion
>>exten => fax,102,Congestion
>>
>>[local]
>>ignorepat => 9
>>exten => _9NXXXXXX,1,Dial(${OUTBOUNDTRUNK}/${EXTEN:1})
>>exten => _9NXXXXXX,2,Congestion(5)
>>exten => _9NXXXXXX,102,congestion(5)
>>exten => 911,1,Dial(${OUTBOUNDTRUNK}/911)
>>exten => 9911,1,Dial(${OUTBOUNDTRUNK}/911
>>include => extensions-home
>>
>>[longdistance]
>>ignorpat => 9
>>exten => _91NXXNXXXXXX,1,Dial(${OUTBOUNDTRUNK}/${EXTEN:1})
>>exten => _91NXXNXXXXXX,2,Congestion(5)
>>exten => _91NXXNXXXXXX,102,congestion(5)
>>include => local
>>
>>
>>[globals]
>>OUTBOUNDTRUNK=Zap/G1
>>
>>PSTN1=Zap/1
>>PSTN2=Zap/2
>>
>>PHONE1=Zap/3
>>PHONE2=Zap/4
>>
>>***************************
>>modules.conf
>>
>>modules]
>>autoload=yes
>>;
>>noload => pbx_gtkconsole.so
>>noload => pbx_kdeconsole.so
>>;
>>; Intercom application is obsoleted by
>>; chan_oss.  Don't load it.
>>;
>>noload => app_intercom.so
>>;
>>; Explicitly load the chan_modem.so early on to be sure
>>; it loads before any of the chan_modem_* 's afte rit
>>;
>>noload => chan_modem.so
>>noload => chan_modem_aopen.so
>>noload => chan_modem_bestdata.so
>>noload => chan_modem_i4l.so
>>noload => chan_phone.so
>>noload => chan_skinny.so
>>noload => chan_iax2.so
>>;
>>load => res_musiconhold.so
>>;
>>; Load either OSS or ALSA, not both
>>; By default, load OSS only (automatically) and do not load ALSA
>>;
>>;noload => chan_alsa.so
>>noload => chan_oss.so
>>;
>>; Module names listed in "global" section will have symbols globally
>>; exported to modules loaded after them.
>>;
>>[global]
>>
>>**************************
>>
>>CLI output
>>
>>  -- Starting simple switch on 'Zap/2-1'
>>    -- Executing Goto("Zap/2-1", "extensions-home|100|1") in new stack
>>    -- Goto (extensions-home,100,1)
>>    -- Executing Answer("Zap/2-1", "") in new stack
>>    -- Executing Queue("Zap/2-1", "extensions-home|trn|||120") in new stack
>>    -- Redirecting Zap/2-1 to fax extension
>>    -- User disconnected from queue extensions-home when they almost made it
>>  == Spawn extension (extensions-home, fax, 0) exited non-zero on 'Zap/2-1'
>>    -- Executing Dial("Zap/2-1", "ZAP/4|20") in new stack
>>    -- Called 4
>>    -- Zap/4-1 is ringing
>>    -- Zap/4-1 is ringing
>>    -- Zap/4-1 answered Zap/2-1
>>    -- Attempting native bridge of Zap/2-1 and Zap/4-1
>>    -- Hungup 'Zap/4-1'
>>  == Spawn extension (extensions-home, fax, 1) exited non-zero on 'Zap/2-1'
>>    -- Hungup 'Zap/2-1'
>>
>>*****************************
>>
>>Thanks
>>_______________________________________________
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>>    
>>
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