Hi Tim, Thanks for your response. Here is my topology as listing down below; PSTN Line --> Cisco Voice GW --> IP Cloud --> Asterisk Will Asterisk able to receive the fax (as in topology above) using its' fax module? In sip.conf I enabled fax detection and T.38. Actually I don't want to use Hylafax + iaxmodem as per requirement. Please advice.> Date: Fri, 1 Jun 2012 10:19:12 -0400 > From: Ahmed Munir <ahmedmunir007 at gmail.com> > Subject: [asterisk-users] Fax over IP ? > To: asterisk-users at lists.digium.com > Message-ID: > <CAGMN=JcD=ry54EUw-Z5qfjtkVx-mpCdTVnC_viKTNOhyXvUM+w at mail.gmail.com > > > Content-Type: text/plain; charset="iso-8859-1" > > Hi all, > > Couple of things I would like ask, does Asterisk provides free license for > FoIP (for 1 channel) or need to purchase it? Couple of years back, I was > able to send and receive the fax using Digium T1 card, in term of FoIP how > can I able to receive fax from traditional telephone lines / T1 lines? As > far my understanding, the functionality for FoIP is to send fax to email or > receive fax from email i.e. using T.38 protocol. > > The thing I would like to know how I can implement this solution i.e. > receiving fax via IP? Correct me if I'm wrong, while receiving fax from > traditional telephone lines will the topology looks like as listed below; > > PSTN Lines --> Asterisk (mounted a T1/ analog card) --> IP --> Asterisk > (receive Fax over IP) > > or else? > > Please advice. > > > -- > Regards, > > Ahmed Munir Chohan > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.digium.com/pipermail/asterisk-users/attachments/20120601/3c861c56/attachment-0001.htm > > > > ------------------------------ > > Message: 15 > Date: Fri, 1 Jun 2012 09:29:19 -0500 (CDT) > From: Tim Nelson <tnelson at rockbochs.com> > Subject: Re: [asterisk-users] Fax over IP ? > To: Asterisk Users Mailing List - Non-Commercial Discussion > <asterisk-users at lists.digium.com> > Message-ID: <2939915.57880.1338560959074.JavaMail.root at rockbochs.com> > Content-Type: text/plain; charset=utf-8 > > ----- Original Message ----- > > Hi all, > > Couple of things I would like ask, does Asterisk provides free > > license for FoIP (for 1 channel) or need to purchase it? Couple of > > years back, I was able to send and receive the fax using Digium T1 > > card, in term of FoIP how can I able to receive fax from traditional > > telephone lines / T1 lines? As far my understanding, the > > functionality for FoIP is to send fax to email or receive fax from > > email i.e. using T.38 protocol. > > The thing I would like to know how I can implement this solution i.e. > > receiving fax via IP? Correct me if I'm wrong, while receiving fax > > from traditional telephone lines will the topology looks like as > > listed below; > > PSTN Lines --> Asterisk (mounted a T1/ analog card) --> IP --> > > Asterisk (receive Fax over IP) > > or else? > > FoIP typically means the fax session traverses an IP link at some point, > most commonly at the 'last mile'. What happens to the fax after that is up > to your requirements. The faxes can be emailed out, stored in a web > application, printed to a printer, etc. The possibilities are endless. > > Asterisk does have a few options for faxing. Those are most notably: > > 1. Fax for Asterisk - Free license available for 1 channel, or paid > licenses for 2+ channels > 2. app_fax (I think this is the current module name) - Free fax module for > Asterisk, no channel limit, based on SpanDSP > 3. Hylafax+ and IAXmodem - Most complicated method of fax setup, but most > robust and reliable (in my testing). Would require use of Asterisk 10 with > T.38 gateway functionality for proper fax reception. > > Just keep in mind raw fax audio over VoIP is a bad idea, see here: > http://www.soft-switch.org/foip.html > > If you can provide some additional details on what you're planning to do, > we can give more info. > > --Tim > > > > ------------------------------ > > Message: 16 > Date: Fri, 1 Jun 2012 09:36:50 -0500 (CDT) > From: Tim Nelson <tnelson at rockbochs.com> > Subject: Re: [asterisk-users] Fax Server for Asterisk > To: Asterisk Users Mailing List - Non-Commercial Discussion > <asterisk-users at lists.digium.com> > Message-ID: <13867195.58161.1338561410617.JavaMail.root at rockbochs.com> > Content-Type: text/plain; charset=utf-8 > > ----- Original Message ----- > > Hi Tim, > > Unfortunately i can't reproduce the scenario because it was a long > > time ago. But it would be nice to hear from you, what things can be > > verified within fax and Asterisk? Any TIP on wireshark monitoring? > > Within Asterisk, the debug logs can be helpful for routing/connectivity > diagnostics. With Hylafax, all of your details will be found in the session > logs in /var/spool/hylafax/log. Here you can see each session's interaction > with the remote fax device. It is an art deciphering the various protocols, > but the folks on the Hylafax lists are incredibly helpful until you've > learned the magic of understanding the logs directly. :) > > --Tim >-- Regards, Ahmed Munir Chohan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120601/985eac29/attachment.htm>
----- Original Message -----> Hi Tim,> Thanks for your response. Here is my topology as listing down below;> PSTN Line --> Cisco Voice GW --> IP Cloud --> Asterisk> Will Asterisk able to receive the fax (as in topology above) using > its' fax module? In sip.conf I enabled fax detection and T.38. > Actually I don't want > to use Hylafax + iaxmodem as per requirement.If your Cisco voice gateway can deliver the calls using T.38, that should give you decent reliability. You'll want to us Asterisk 10 which has the best T.38 support at this point (compared to older releases). The receiving side of the equation then becomes whether to use Fax for Asterisk (commercial, 1 free channel, 2+ paid), or the included SpanDSP based fax module. --Tim
Hi Tim,
I'm using Asterisk 10 and on Cisco GW the protocol is set for FAX is T.38
and when I try to send the fax from a fax machine i.e. HP 3180, I'm getting
some warnings as listed below;
-- Executing [4112345678 at default:1]
Goto("SIP/192.168.1.69-00000005",
"fax-detect,fax,1") in new stack
-- Goto (fax-detect,fax,1)
-- Executing [fax at fax-detect:1]
NoOp("SIP/192.168.1.69-00000005", "****
FAX DETECTED ****") in new stack
-- Executing [fax at fax-detect:2]
Goto("SIP/192.168.1.69-00000005",
"fax-receive,receive,1") in new stack
-- Goto (fax-receive,receive,1)
-- Executing [receive at fax-receive:1]
NoOp("SIP/192.168.1.69-00000005",
"**** FAX RECEIVE ****") in new stack
-- Executing [receive at fax-receive:2]
Set("SIP/192.168.1.69-00000005",
"GLOBAL(FAXCOUNT)=5") in new stack
== Setting global variable 'FAXCOUNT' to '5'
-- Executing [receive at fax-receive:3]
Set("SIP/192.168.1.69-00000005",
"FAXCOUNT=5") in new stack
-- Executing [receive at fax-receive:4]
Set("SIP/192.168.1.69-00000005",
"FAXFILE=fax-5-rx.tif") in new stack
-- Executing [receive at fax-receive:5]
Set("SIP/192.168.1.69-00000005",
"GLOBAL(LASTFAXCALLERNUM)=6461234567") in new stack
== Setting global variable 'LASTFAXCALLERNUM' to '6461234567'
-- Executing [receive at fax-receive:6]
Set("SIP/192.168.1.69-00000005",
"GLOBAL(LASTFAXCALLERNAME)=") in new stack
== Setting global variable 'LASTFAXCALLERNAME' to ''
-- Executing [receive at fax-receive:7]
NoOp("SIP/192.168.1.69-00000005",
"**** SETTING FAXOPT ****") in new stack
-- Executing [receive at fax-receive:8]
Set("SIP/192.168.1.69-00000005",
"FAXOPT(ecm)=yes") in new stack
-- Executing [receive at fax-receive:9]
Set("SIP/192.168.1.69-00000005",
"FAXOPT(headerinfo)=MY FAXBACK RX") in new stack
-- Executing [receive at fax-receive:10]
Set("SIP/192.168.1.69-00000005",
"FAXOPT(localstationid)=1234567890") in new stack
-- Executing [receive at fax-receive:11]
Set("SIP/192.168.1.69-00000005",
"FAXOPT(maxrate)=14400") in new stack
-- Executing [receive at fax-receive:12]
Set("SIP/192.168.1.69-00000005",
"FAXOPT(minrate)=2400") in new stack
-- Executing [receive at fax-receive:13]
NoOp("SIP/192.168.1.69-00000005",
"FAXOPT(ecm) : yes") in new stack
-- Executing [receive at fax-receive:14]
NoOp("SIP/192.168.1.69-00000005",
"FAXOPT(headerinfo) : MY FAXBACK RX") in new stack
-- Executing [receive at fax-receive:15]
NoOp("SIP/192.168.1.69-00000005",
"FAXOPT(localstationid) : 1234567890") in new stack
-- Executing [receive at fax-receive:16]
NoOp("SIP/192.168.1.69-00000005",
"FAXOPT(maxrate) : 14400") in new stack
-- Executing [receive at fax-receive:17]
NoOp("SIP/192.168.1.69-00000005",
"FAXOPT(minrate) : 2400") in new stack
-- Executing [receive at fax-receive:18]
NoOp("SIP/192.168.1.69-00000005",
"**** RECEIVING FAX : fax-5-rx.tif ****") in new stack
-- Executing [receive at fax-receive:19]
ReceiveFAX("SIP/192.168.1.69-00000005",
"/var/spool/asterisk/fax/fax-5-rx.tif") in new stack
-- Channel 'SIP/192.168.1.69-00000005' receiving FAX
'/var/spool/asterisk/fax/fax-5-rx.tif'
== Using UDPTL CoS mark 5
[Jun 4 12:35:02] NOTICE[10371]: chan_sip.c:7577 sip_read: FAX CNG detected
but no fax extension
[Jun 4 12:35:02] WARNING[10072]: res_fax.c:1666 receivefax_t38_init:
channel 'SIP/192.168.1.69-00000005' refused to negotiate T.38
[Jun 4 12:35:02] WARNING[10072]: res_fax.c:1687 receivefax_t38_init: Audio
FAX not allowed on channel 'SIP/192.168.1.69-00000005' and T.38
negotiation
failed; aborting.
[Jun 4 12:35:02] ERROR[10072]: res_fax.c:1891 receivefax_exec: error
initializing channel 'SIP/192.168.1.69-00000005' in T.38 mode
== Spawn extension (fax-receive, receive, 19) exited non-zero on
'SIP/192.168.1.69-00000005'
In my sip.conf global configuration I enabled 'fax detect' and
't38pt_udptl' and added Cisco VGW peer;
[CiscoVGW-10.70.X.X]
host=10.70.X.X
type=friend
disallow=all
allow=ulaw
allow=alaw
nat=yes
insecure=port,invite
context=fax-call
canreinvite=no
qualify=yes
dtmfmode=inband
While the fax machine starts to send the fax after a while it gives the
message, 'Fax failed' with error code: '388'. Is it the end
point fax
machine issue or else? Please assist me out to resolve this issue at
earliest.
>
>
> > Thanks for your response. Here is my topology as listing down below;
>
> > PSTN Line --> Cisco Voice GW --> IP Cloud --> Asterisk
>
> > Will Asterisk able to receive the fax (as in topology above) using
> > its' fax module? In sip.conf I enabled fax detection and T.38.
> > Actually I don't want
> > to use Hylafax + iaxmodem as per requirement.
>
> If your Cisco voice gateway can deliver the calls using T.38, that should
> give you decent reliability. You'll want to us Asterisk 10 which has
the
> best T.38 support at this point (compared to older releases). The receiving
> side of the equation then becomes whether to use Fax for Asterisk
> (commercial, 1 free channel, 2+ paid), or the included SpanDSP based fax
> module.
>
> --Tim
>
>
--
Regards,
Ahmed Munir Chohan
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----- Original Message -----> Hi Tim,> ...> While the fax machine starts to send the fax after a while it gives > the message, 'Fax failed' with error code: '388'. Is it the end > point fax machine issue or else? Please assist me out to resolve > this issue at earliest.Please do not email me directly. I've already responded on list, despite wanting to let this sit for a few days in response to you asking for support 'at earliest'... The Asterisk support list has no SLA, only governed by the time and willingness of the members to participate. Thanks. --Tim