Re: [asterisk-users] Asterisk 1.4 Fax
Hello, 2008/1/1, Steve Underwood [EMAIL PROTECTED]: Hi Rob, Rob Hillis wrote: Well that answers that question. I see that t38modem provides an H232 modem - is this unsuitable for HylaFAX's purpose? (ignoring the fact that it requires a kernel recompile on most newer distros.) Steve Underwood wrote: Rob Hillis wrote: Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. There are actually two reasons. One is that T.38 over IAX is not defined. The other is the current T.38 termination support in spandsp is only for the full FAX machine it contains. T.38 termination to the class 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When that is done, I hope we will have a sipmodem to replace iaxmodem, offering bother audio and T.38 to HylaFAX functionality. Steve The most recent versions of t38modem can apparently provide both a SIP and H.323 T.38 to class 1 FAX modem interface for HylaFAX. What it cannot provide is an audio FAX interface. What is an audio FAX interface ? I'm not sure to understand what it is. Cheers The sipmodem code I am working on will integrate audio and T.38 FAX processing in a single SIP entity. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
On Jan 1, 2008, at 1:00 PM, [EMAIL PROTECTED] wrote: The most recent versions of t38modem can apparently provide both a SIP and H.323 T.38 to class 1 FAX modem interface for HylaFAX. What it cannot provide is an audio FAX interface. The sipmodem code I am working on will integrate audio and T.38 FAX processing in a single SIP entity. Apparently, indeed. I've been unable to get it to send faxes via a Cisco gateway. (Receive is OK.) The other side always reports errors, so it may or may not work for you. Norman Franke ASD, Inc. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Well that answers that question. I see that t38modem provides an H232 modem - is this unsuitable for HylaFAX's purpose? (ignoring the fact that it requires a kernel recompile on most newer distros.) Steve Underwood wrote: Rob Hillis wrote: Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. There are actually two reasons. One is that T.38 over IAX is not defined. The other is the current T.38 termination support in spandsp is only for the full FAX machine it contains. T.38 termination to the class 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When that is done, I hope we will have a sipmodem to replace iaxmodem, offering bother audio and T.38 to HylaFAX functionality. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Hi Rob, Rob Hillis wrote: Well that answers that question. I see that t38modem provides an H232 modem - is this unsuitable for HylaFAX's purpose? (ignoring the fact that it requires a kernel recompile on most newer distros.) Steve Underwood wrote: Rob Hillis wrote: Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. There are actually two reasons. One is that T.38 over IAX is not defined. The other is the current T.38 termination support in spandsp is only for the full FAX machine it contains. T.38 termination to the class 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When that is done, I hope we will have a sipmodem to replace iaxmodem, offering bother audio and T.38 to HylaFAX functionality. Steve The most recent versions of t38modem can apparently provide both a SIP and H.323 T.38 to class 1 FAX modem interface for HylaFAX. What it cannot provide is an audio FAX interface. The sipmodem code I am working on will integrate audio and T.38 FAX processing in a single SIP entity. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I'm not looking at T.38 , at this time its terminating a SIP trunk with multiple DID's for fax. I'm using this configuration with linksys PAP ATA and satisfied with results. I'm looking at removing these ATA 's and using Asterisk ( or giving it a try ) for terminating fax. Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. There are actually two reasons. One is that T.38 over IAX is not defined. The other is the current T.38 termination support in spandsp is only for the full FAX machine it contains. T.38 termination to the class 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When that is done, I hope we will have a sipmodem to replace iaxmodem, offering bother audio and T.38 to HylaFAX functionality. Steve The most recent versions of t38modem can apparently provide both a SIP and H.323 T.38 to class 1 FAX modem interface for HylaFAX. What it cannot provide is an audio FAX interface. The sipmodem code I am working on will integrate audio and T.38 FAX processing in a single SIP entity. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Then I suggest you prepare yourself for a lot of pain. Fax over the 'net without T.38 is almost guaranteed to not work. Al lists wrote: I'm not looking at T.38 , at this time its terminating a SIP trunk with multiple DID's for fax. I'm using this configuration with linksys PAP ATA and satisfied with results. I'm looking at removing these ATA 's and using Asterisk ( or giving it a try ) for terminating fax. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
REALY?? Humm I have been doing this for over a year and we receive over 400 faxes a month! 8 iaxmodems with DID's from a real SIP provider. And this connection is used for ALL office traffic, mail, VPN, webmail, and DNS. NO echo and no voice quality issues. Now we do have a 12mb down 768k up connection. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rob Hillis Sent: Tuesday, January 01, 2008 12:51 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Then I suggest you prepare yourself for a lot of pain. Fax over the 'net without T.38 is almost guaranteed to not work. Al lists wrote: I'm not looking at T.38 , at this time its terminating a SIP trunk with multiple DID's for fax. I'm using this configuration with linksys PAP ATA and satisfied with results. I'm looking at removing these ATA 's and using Asterisk ( or giving it a try ) for terminating fax. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: REALY?? Humm I have been doing this for over a year and we receive over 400 faxes a month! 8 iaxmodems with DID's from a real SIP provider. And this connection is used for ALL office traffic, mail, VPN, webmail, and DNS. NO echo and no voice quality issues. Now we do have a 12mb down 768k up connection. How often are you checking your HylaFAX+ Logs? Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I have it setup to email me any failed fax connections. Most of the faxes come from remote offices, distributors and customers. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle Sent: Tuesday, January 01, 2008 2:35 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Jonn R Taylor wrote: REALY?? Humm I have been doing this for over a year and we receive over 400 faxes a month! 8 iaxmodems with DID's from a real SIP provider. And this connection is used for ALL office traffic, mail, VPN, webmail, and DNS. NO echo and no voice quality issues. Now we do have a 12mb down 768k up connection. How often are you checking your HylaFAX+ Logs? Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: I have it setup to email me any failed fax connections. Most of the faxes come from remote offices, distributors and customers. Same here, but HylaFAX won't send you any logs of attempts that haven't at least negotiated a fax transmission. Call comes in, tries to sync up several times and then hangs up. It gets logged, but doesn't get sent to the FaxMaster. You may want to check. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
On Tue, 2008-01-01 at 13:48 -0600, Jonn R Taylor wrote: REALY?? Humm I have been doing this for over a year and we receive over 400 faxes a month! 8 iaxmodems with DID's from a real SIP provider. And this connection is used for ALL office traffic, mail, VPN, webmail, and DNS. NO echo and no voice quality issues. Now we do have a 12mb down 768k up connection. Can you share more details about your implementation? what are you using for faxing? Regards, -- Guillermo Salas M. Telconet S.A. Calle 15 y Avenida 24 Esq Edificio Barre #2 Primer Piso Telefono : +593 5 262 8071 Celular : +593 9 985 5138 e-mail : [EMAIL PROTECTED] www : http://www.manta.telconet.net http://www.telcocarrier.net SIP : [EMAIL PROTECTED] FWD : 558563 USA : 1 360 968 1701 Linux User: 255902 Beat me, whip me, make me use Windows! Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html Please avoid the Top Posting, see http://es.wikipedia.org/wiki/Top-posting ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, only use g711, and you must have QOS enabled on your switches and/or a traffic shaper on your internet connection. I have a remote office that uses an IAX trunk and I can fax between these to offices over the internet. I have both app_txfax and app_rxfax also setup on asterisk and can use any of them. We also have 1 linksys ata that has a networked brother printer/fax and we can send faxes from it to any of the fax services on our network or any PSTN number. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle Sent: Tuesday, January 01, 2008 2:56 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Jonn R Taylor wrote: I have it setup to email me any failed fax connections. Most of the faxes come from remote offices, distributors and customers. Same here, but HylaFAX won't send you any logs of attempts that haven't at least negotiated a fax transmission. Call comes in, tries to sync up several times and then hangs up. It gets logged, but doesn't get sent to the FaxMaster. You may want to check. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, Really? I'll have to do some testing, I've never tried since I've read you can't. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file The reason that you need the nojitterbuffer in the iaxmodem config file is because you're actually getting at least some jitter. IAXmodem's jitterbuffer simply fills-in gaps due to jitter with previously-heard audio samples. There is no way to recreate the missing audio. Filling-in the gaps with previous audio samples is effective in preventing premature carrier loss conditions, but it messes up the modems until real carrier loss does occur. It turns out that in most cases it's better to simply skip over the missing audio. The DSP seems to handle that quite gracefully. Thanks, Lee. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I have always said that if some one said it can't be done, they did not try hard enough. FYI... I love this. Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle Sent: Tuesday, January 01, 2008 3:42 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Jonn R Taylor wrote: If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, Really? I'll have to do some testing, I've never tried since I've read you can't. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
That is correct. I found that out awhile ago with our internal fax. It would not connect, but the external faxes coming in over SIP worked. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lee Howard Sent: Tuesday, January 01, 2008 3:50 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Jonn R Taylor wrote: One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file The reason that you need the nojitterbuffer in the iaxmodem config file is because you're actually getting at least some jitter. IAXmodem's jitterbuffer simply fills-in gaps due to jitter with previously-heard audio samples. There is no way to recreate the missing audio. Filling-in the gaps with previous audio samples is effective in preventing premature carrier loss conditions, but it messes up the modems until real carrier loss does occur. It turns out that in most cases it's better to simply skip over the missing audio. The DSP seems to handle that quite gracefully. Thanks, Lee. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I'd say consider yourself very lucky. I know I did some testing here some time ago with faxing over VoIP. * One extension to another over G711a with both extensions on the same LAN - worked 95% of the time * One extension on my Asterisk server to an Extension on a friend's Asterisk server using G711a via IAX - 95% failure rate. Both of us awere on the same ISP and had ping times of ~40ms between us. However, in a live environment, I convert a PSTN call to a t.38 encoded call and can send the fax just about anywhere I damn well want (where the remote end supports t.38) with a 95% success rate. t.38 is the key to successful faxing over a VoIP network. Without it, you're begging for trouble. Doug Lytle wrote: Jonn R Taylor wrote: If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, Really? I'll have to do some testing, I've never tried since I've read you can't. Doug ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
NOT true and I have proven that for the last year. Jonn _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rob Hillis Sent: Tuesday, January 01, 2008 4:13 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax I'd say consider yourself very lucky. I know I did some testing here some time ago with faxing over VoIP. * One extension to another over G711a with both extensions on the same LAN - worked 95% of the time * One extension on my Asterisk server to an Extension on a friend's Asterisk server using G711a via IAX - 95% failure rate. Both of us awere on the same ISP and had ping times of ~40ms between us. However, in a live environment, I convert a PSTN call to a t.38 encoded call and can send the fax just about anywhere I damn well want (where the remote end supports t.38) with a 95% success rate. t.38 is the key to successful faxing over a VoIP network. Without it, you're begging for trouble. Doug Lytle wrote: Jonn R Taylor wrote: If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, Really? I'll have to do some testing, I've never tried since I've read you can't. Doug ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: FYI... I love this. Ben Franklin quote: I truly believe it. But, it being a Franklin quote is in some dispute. I like it all the same. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Jonn R Taylor wrote: I have always said that if some one said it can't be done, they did not try hard enough. FYI... I love this. Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. As the person behind the tools you are relying on, I can say you haven't tried hard at all. You are just lucky, and almost certainly just being very reliant on the majority of your FAXes using ECM mode, and retrying a lot. Trying hard for FAX over IP means implementing T.37, or at least T.38. These are engineered solutions, not pot luck. Your present arrangement assumes G.711 (not available a lot of the time), no signal manipulation in the system beyond your controls (getting rarer and rarer), a very crude network doing nothing to improve voice quality (should be getting rarer too), limited packet loss (which is truly pot luck over the internet, which you say you use), and a few other magic qualities. A number of people claim solid FAXing results across VoIP paths, like they've achieved some engineering breakthrough. The claims tend to evaporate under closer inspection. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Guys! what i was looking here was a simple hint/recommendation for installing IaxModem and Hylafax. Let me try it myself and see how feasible this solutions is. On Jan 1, 2008 5:02 PM, Steve Underwood [EMAIL PROTECTED] wrote: Jonn R Taylor wrote: I have always said that if some one said it can't be done, they did not try hard enough. FYI... I love this. Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. As the person behind the tools you are relying on, I can say you haven't tried hard at all. You are just lucky, and almost certainly just being very reliant on the majority of your FAXes using ECM mode, and retrying a lot. Trying hard for FAX over IP means implementing T.37, or at least T.38. These are engineered solutions, not pot luck. Your present arrangement assumes G.711 (not available a lot of the time), no signal manipulation in the system beyond your controls (getting rarer and rarer), a very crude network doing nothing to improve voice quality (should be getting rarer too), limited packet loss (which is truly pot luck over the internet, which you say you use), and a few other magic qualities. A number of people claim solid FAXing results across VoIP paths, like they've achieved some engineering breakthrough. The claims tend to evaporate under closer inspection. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Steve, One of the main reasons that this works is controlling the data to and from the internet. I have spent the last 10 years building networks for ISP's. The key is getting the data from point a to point b in tact and in order. I did not get lucky as you put it. I am a network engineer and I know how to make networks work the way they need to. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Underwood Sent: Tuesday, January 01, 2008 6:02 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Jonn R Taylor wrote: I have always said that if some one said it can't be done, they did not try hard enough. FYI... I love this. Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. As the person behind the tools you are relying on, I can say you haven't tried hard at all. You are just lucky, and almost certainly just being very reliant on the majority of your FAXes using ECM mode, and retrying a lot. Trying hard for FAX over IP means implementing T.37, or at least T.38. These are engineered solutions, not pot luck. Your present arrangement assumes G.711 (not available a lot of the time), no signal manipulation in the system beyond your controls (getting rarer and rarer), a very crude network doing nothing to improve voice quality (should be getting rarer too), limited packet loss (which is truly pot luck over the internet, which you say you use), and a few other magic qualities. A number of people claim solid FAXing results across VoIP paths, like they've achieved some engineering breakthrough. The claims tend to evaporate under closer inspection. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I think perhaps you are the exception rather than the rule. Maybe you were able to engineer your network so that fax works without any of the FoIP protocols - good luck to you if you have. For /most/ people, it's unlikely they would have sufficient control over their WAN segment to ensure that it is sufficiently fast and reliable enough for fax to work reliably. In any case, why on earth would you attempt to re-invent the wheel? T.38 is not only considerably more reliable and robust, it's nowhere /near/ as bandwidth intensive as G711. The original question was regarding using IAXmodem and Hylafax to receive faxes over a SIP connection. Given that T.38 can not work in this situation, the simple answer is that it /isn't/ the best solution. Jonn R Taylor wrote: NOT true and I have proven that for the last year. Jonn *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Rob Hillis *Sent:* Tuesday, January 01, 2008 4:13 PM *To:* Asterisk Users Mailing List - Non-Commercial Discussion *Subject:* Re: [asterisk-users] Asterisk 1.4 Fax I'd say consider yourself very lucky. I know I did some testing here some time ago with faxing over VoIP. * One extension to another over G711a with both extensions on the same LAN - worked 95% of the time * One extension on my Asterisk server to an Extension on a friend's Asterisk server using G711a via IAX - 95% failure rate. Both of us awere on the same ISP and had ping times of ~40ms between us. However, in a live environment, I convert a PSTN call to a t.38 encoded call and can send the fax just about anywhere I damn well want (where the remote end supports t.38) with a 95% success rate. t.38 is the key to successful faxing over a VoIP network. Without it, you're begging for trouble. Doug Lytle wrote: Jonn R Taylor wrote: If I had ANY failed faxes I would here about it. Iaxmodem creates a log of its own, so when I get a connection that fails hylafax sends the failure to me. One of the things that I found is you need to add nojitterbuffer to the iaxmodem config file, Really? I'll have to do some testing, I've never tried since I've read you can't. Doug ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
On Dec 28, 2007 8:28 PM, Al lists [EMAIL PROTECTED] wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. What are you trying to do and do you have a T1 or ISDN line? ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
at this time is terminating a SIP trunk, each DID will get its own fax box. I guess at this time i'm looking to find a tutorial for installing iaxmodem and hylafax as it seems to be the answer. On Dec 31, 2007 9:11 PM, Andrew Joakimsen [EMAIL PROTECTED] wrote: On Dec 28, 2007 8:28 PM, Al lists [EMAIL PROTECTED] wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. What are you trying to do and do you have a T1 or ISDN line? ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Unless your provider provides a T.38 gateway, fax over SIP is pretty much guaranteed to be unusable. Often you can get away with it over a LAN using G711a or G711u, but any of the lower bandwidth codecs /won't/ be able to properly handle fax calls. Whilst I haven't used it myself, I believe IAXmodem and Hylafax are used for sending and receiving faxes from a local PSTN termination point such as T1 or ISDN. The IAXmodem web site explains the pitfalls of faxing over the internet. See http://iaxmodem.sourceforge.net/faq.php for more info. Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. Al lists wrote: at this time is terminating a SIP trunk, each DID will get its own fax box. I guess at this time i'm looking to find a tutorial for installing iaxmodem and hylafax as it seems to be the answer. On Dec 31, 2007 9:11 PM, Andrew Joakimsen [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: On Dec 28, 2007 8:28 PM, Al lists [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. What are you trying to do and do you have a T1 or ISDN line? ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
If by fax box you mean an ATA with a fax machine attached them Asterisk 1.4 with T38 passthrough should work if the SIP provider has T.38 capabilites. If by fax box you mean a 'faxmail inbox' then no Asterisk cannot help you terminate that from SIP. Get a Cisco gateway, make sure your provider uses T.38 and connect that to your Asterisk via T1 or E1. On Jan 1, 2008 12:50 AM, Al lists [EMAIL PROTECTED] wrote: at this time is terminating a SIP trunk, each DID will get its own fax box. I guess at this time i'm looking to find a tutorial for installing iaxmodem and hylafax as it seems to be the answer. On Dec 31, 2007 9:11 PM, Andrew Joakimsen [EMAIL PROTECTED] wrote: On Dec 28, 2007 8:28 PM, Al lists [EMAIL PROTECTED] wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. What are you trying to do and do you have a T1 or ISDN line? ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Rob Hillis wrote: Last time I heard IAXModem didn't support T.38 because the IAX2 protocol didn't support T.38 - whether that's still the case or not, I don't know. There are actually two reasons. One is that T.38 over IAX is not defined. The other is the current T.38 termination support in spandsp is only for the full FAX machine it contains. T.38 termination to the class 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When that is done, I hope we will have a sipmodem to replace iaxmodem, offering bother audio and T.38 to HylaFAX functionality. Steve ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Al lists wrote: So HylaFax and IaxModem is more preferred than using rxfax/txfax ? any reason? HylaFAX+ has built-in support for handling transmission errors. It used to be (Not sure now) that when rx/txfax encountered an error, it just quit. HylaFAX+ also has many features available for converting/scheduling and routing inbound/outbound faxes. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Any recommended how to for 1.4 iaxmodem and hylafax+ ? On Dec 29, 2007 6:49 AM, Doug Lytle [EMAIL PROTECTED] wrote: Al lists wrote: So HylaFax and IaxModem is more preferred than using rxfax/txfax ? any reason? HylaFAX+ has built-in support for handling transmission errors. It used to be (Not sure now) that when rx/txfax encountered an error, it just quit. HylaFAX+ also has many features available for converting/scheduling and routing inbound/outbound faxes. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
I maintain some scripts that I wrote to do a full CentOS Asterisk Hylafax iaxmodem install. All here on the list are welcome to use them. They new scripts are located here http://www.taylortelephone.com/asterisk/ Jonn _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Al lists Sent: Saturday, December 29, 2007 9:44 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Any recommended how to for 1.4 iaxmodem and hylafax+ ? On Dec 29, 2007 6:49 AM, Doug Lytle [EMAIL PROTECTED] wrote: Al lists wrote: So HylaFax and IaxModem is more preferred than using rxfax/txfax ? any reason? HylaFAX+ has built-in support for handling transmission errors. It used to be (Not sure now) that when rx/txfax encountered an error, it just quit. HylaFAX+ also has many features available for converting/scheduling and routing inbound/outbound faxes. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
On Sat, Dec 29, 2007 at 08:43:30AM -0700, Al lists wrote: Any recommended how to for 1.4 iaxmodem and hylafax+ ? Just a note: the interface of iaxmodem to Asterisk hasn't changed since 1.2 . Chances are older documentation will be relevant. -- Tzafrir Cohen icq#16849755 jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
thank you all, still i'm seeking answer to original question, which one is more preferred in fax servers with 100 usres? On Dec 29, 2007 12:10 PM, Tzafrir Cohen [EMAIL PROTECTED] wrote: On Sat, Dec 29, 2007 at 08:43:30AM -0700, Al lists wrote: Any recommended how to for 1.4 iaxmodem and hylafax+ ? Just a note: the interface of iaxmodem to Asterisk hasn't changed since 1.2 . Chances are older documentation will be relevant. -- Tzafrir Cohen icq#16849755 jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Al lists wrote: thank you all, still i'm seeking answer to original question, which one is more preferred in fax servers with 100 usres? I believe I answered that question. HylaFAX+ and iaxmodem. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Same here. Hylafax and iaxmodem is a good, reliable solution. Ihave been running this for a year with n o problems. Jonn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle Sent: Saturday, December 29, 2007 1:32 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Asterisk 1.4 Fax Al lists wrote: thank you all, still i'm seeking answer to original question, which one is more preferred in fax servers with 100 usres? I believe I answered that question. HylaFAX+ and iaxmodem. Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Al lists wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. I think that you mean to say HylaFAX and IAXmodem or txfax/rxfax ... because spandsp is but a DSP/DCE library, and it cannot work alone, and iaxmodem uses spandsp. Thanks, Lee. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
Al lists wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. HylaFAX+ and iaxmodem (That includes SpanDSP). Doug -- Ben Franklin quote: Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk 1.4 Fax
So HylaFax and IaxModem is more preferred than using rxfax/txfax ? any reason? On Dec 28, 2007 6:40 PM, Lee Howard [EMAIL PROTECTED] wrote: Al lists wrote: what method is preferred: haylafax and Iaxmodem or spnadsp for faxing. I think that you mean to say HylaFAX and IAXmodem or txfax/rxfax ... because spandsp is but a DSP/DCE library, and it cannot work alone, and iaxmodem uses spandsp. Thanks, Lee. ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
