[asterisk-users] Which is the best ?
Hi, As I am a newbie, I am going to ask a newbie question ;-) I saw Digium has TE212P (with DSP) and TE210P cards (no DSP), and Sangoma has A102 T1/E1 AFT card (no DSP)... What is the best choice of T1/E1 card (2ports) for an installation on Centos 4 (or simply what is the best choice of T1/E1 card ?) ? Digium or Sangoma cards? We would to build up a between small and medium system (and hope that it will grow to a large one ;-) :-P !) Thanks you for your help ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Which is the best user GUI ?
Hi,I would like to customise an end user application like Centiles's callpad software ( http://www.centile.com/solutions-applications-callpad.php ).Its purpose is to allow users to set or read various personal phone-related parameters (call history, voicemail settings, conference, ...) instead of using phone keys combinations.Are you aware of any software that could be used for this ? I've read www.voip-info.org User interfaces section ( http://www.voip-info.org/wiki/view/Asterisk+GUI).23 softwares are listed. Which one is your favorite for that ? Why ?Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best user GUI ?
Is Centile a solution built ontop of Asterisk? It looks similar according to their feature list. http://www.centile.com/solutions-intraswitch-platform-systemmanagement.php and http://www.centile.com/solutions-intraswitch-platform-advancedfeatures.php On 6/20/06, Olivier [EMAIL PROTECTED] wrote: Hi, I would like to customise an end user application like Centiles's callpad software ( http://www.centile.com/solutions-applications-callpad.php ). Its purpose is to allow users to set or read various personal phone-related parameters (call history, voicemail settings, conference, ...) instead of using phone keys combinations. Are you aware of any software that could be used for this ? I've read www.voip-info.org User interfaces section ( http://www.voip-info.org/wiki/view/Asterisk+GUI). 23 softwares are listed. Which one is your favorite for that ? Why ? Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best user GUI ?
I'm not aware of Centile using Asterisk though it could be so ...I used Centile's Callpad as an example as :1. hardware vendors (Avaya, Alcatel, ...) do not tell much about their own user GUI software2. and Centile software is often used by IP Telephony Service Providers which also use Asterisk. (For instance, Alcatel has OmniTouch Unified Communication suite which gathers My Phone, My Teamwork, My Messaging and My Assistant software. I think vendors have a hard time trying trying to sell such software : people are ready to pay for hardware but not for this kind of software) 2006/6/20, [EMAIL PROTECTED] [EMAIL PROTECTED]: Is Centile a solution built ontop of Asterisk? It looks similaraccording to their feature list. http://www.centile.com/solutions-intraswitch-platform-systemmanagement.php andhttp://www.centile.com/solutions-intraswitch-platform-advancedfeatures.php On 6/20/06, Olivier [EMAIL PROTECTED] wrote: Hi, I would like to customise an end user application like Centiles's callpad software ( http://www.centile.com/solutions-applications-callpad.php ). Its purpose is to allow users to set or read various personal phone-related parameters (call history, voicemail settings, conference, ...) instead of using phone keys combinations. Are you aware of any software that could be used for this ? I've read www.voip-info.org User interfaces section ( http://www.voip-info.org/wiki/view/Asterisk+GUI). 23 softwares are listed. Which one is your favorite for that ? Why ? Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com --Asterisk-Users mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Keyboardot ragadtam, hogy va'laszoljak Rich Adamson osszedobalt bytejaira: I agree with most of the points, however i have installed several systems with x100p and/or hfc based ISDN, and voip trunk. If they user don't forget to use the configured prefix for using pstn for fax, everything is nice. Even if we are using digium fxo/fxs ports, or using ATA (Linksys pap2 or Sipura) on FXS side. I'm not saying that is a 100% solution, but it works for SOHO i think. Which fax-modem would you pick if you had to test fax capabilities ? For instance, before releasing a new PBX system offering fax connectivity, you would like to make sure you comply with most fax machines and protocols. As you can't afford you buy and maintain tens of such fax machines nor can't afford to test by hand each protocol, it's tempting to buy an all-inclusive fax-modem and run a program instead. Which one would you choose for that ? The fax modem is not really the issue with asterisk. By far, the majority of existing analog fax machines installed and being sold today will function just fine with asterisk. If you sell an asterisk system into an analog pstn environment, any fax machine will function through asterisk if you use the Sangoma A200D analog card with fxo and fxs modules. (Very stable and very reliable fax transmissions.) If you sell an asterisk system into a digital pstn environment (eg, PRI), any fax machine will work with Sangoma or Digium digital cards, however the fxs interface to the fax machine may be very questionable in terms of reliability and usability. If you sell an asterisk system with external pstn gateways (eg, ATA adapters), better be careful as the majority of inexpensive gateways will not function reliably with an analog fax machine. If you're thinking T.38 fax capability, forget it for now. Some folks were working on adding T.38 support into asterisk, but its not in stable code as yet to the best of my knowledge. Also, according to Steve Underwood, T.38 implementations in current fax machines are of questionable quality. If you're thinking in terms of high volume faxing, then look towards the hylafax (or whatever) approach. If you're thinking in terms of faxing via VoIP providers, reliability will be less then acceptable if you get it to work at all. Bottom line: the most reliable method of integrating fax support into an asterisk system today (without implementing hylafax or whatever) is through the use of the Sangoma A200D analog card, as it keeps the pcm data flow on the card (fxs - fxo); and, removes the impact that pci bus, shared interrupts, system applications, ethernet dropped packets or jitter, ATA issues, and other disruptive elements from the analog fax data path. If you search the list archives for the past two years, you'll find a couple of point solutions other then mentioned above that do work, but most of them are dependent on some specific element (eg, full moon) that cannot be reliably replicated in every asterisk installation. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- WoodOO-[P]an[G]alaktikan[A]gent-People ][ http://shadow.pganet.com [EMAIL PROTECTED]@RedHat.users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Lee Howard wrote: Olivier Krief wrote: For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannot hangup when I enable or disable Super G3 mode ? MultiTech 5634-series and MainPine RockForce fax modems (Agere chipset) support SuperG3. You'd run these with HylaFAX, for example, and not Asterisk. It is worth pointing out that the V.34 modems have almost no chance of achieving V.34 speeds if you go: PSTN-analogue line-asterisk-FXS port-modem if you go PSTN-digital line-asterisk-FXS port-modem performance will depend on the FXS port, and any internal timing issues. With a TDM400 card its fairly unlikely to work. With a channel bank connected to a port on the same digital card that connects to the PSTN chances are high. The problem with the PSTN-analogue line-asterisk-FXS port-modem path is signal degradation through the extra analogue-digital-analogue step is too much for V.34. For FAX modems up to V.29 it is no problem. For V.17 is tends to work if the port quality is good. Steve ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Hi,2006/5/17, Rich Adamson [EMAIL PROTECTED]: (*) By fax doesn't hangup, I mean though Asterisk server forward an incoming fax call to the right extension, it keeps on ringing the fax machine which never hangup. Maybe the flash signal is too weak I'm very confused by the above statement.What do you mean by it keeps on ringing and machine never hangup inthe same sentence?(No such thing as it keeps ringing and never hangup. Hangup occurs after answering, so if its ringing, it can't hangup.)What do you mean by flash signal is too weak? (There's no such thingas a weak flash. Sort of equivalent to saying a weak binary 1.) My statement was very confused and I really apologize for that.It should have been written that way :By fax doesn't hangup, I mean though Asterisk server forward anincoming fax call to the right extension, it keeps on ringing the fax machine which never answer. Maybe the flash signal is too weakBest regards ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
2006/5/21, Steve Underwood [EMAIL PROTECTED]: Lee Howard wrote: Olivier Krief wrote: For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannothangup when I enable or disable Super G3 mode ? MultiTech 5634-series and MainPine RockForce fax modems (Agere chipset) support SuperG3.You'd run these with HylaFAX, for example, and not Asterisk.It is worth pointing out that the V.34 modems have almost no chance ofachieving V.34 speeds if you go:PSTN-analogue line-asterisk-FXS port-modemif you goPSTN-digital line-asterisk-FXS port-modem performance will depend on the FXS port, and any internal timing issues.With a TDM400 card its fairly unlikely to work. With a channel bankconnected to a port on the same digital card that connects to the PSTN chances are high.The problem with the PSTN-analogue line-asterisk-FXS port-modem pathis signal degradation through the extra analogue-digital-analogue stepis too much for V.34. For FAX modems up to V.29 it is no problem. ForV.17 is tends to work if the port quality is good.SteveHi Steve,Which fax-modem would you pick to highlight this behaviour ?I mean :If you had to buy a single fax-modem to complement a laptop to demonstrate a TDM or ToIP system is V.34 or V.17-capable, which fax-modem would you choose ?You launch a shell-script from your laptop and it sends 5 or 6 faxes with the same content to a given destination (always the same one) at different speeds or protocols. Reading destination fax machine's reception report, you can rate each sending and tellwhat your System Under Test is capable of.Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Olivier Krief wrote: 2006/5/21, Steve Underwood [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: Lee Howard wrote: Olivier Krief wrote: For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannot hangup when I enable or disable Super G3 mode ? MultiTech 5634-series and MainPine RockForce fax modems (Agere chipset) support SuperG3. You'd run these with HylaFAX, for example, and not Asterisk. It is worth pointing out that the V.34 modems have almost no chance of achieving V.34 speeds if you go: PSTN-analogue line-asterisk-FXS port-modem if you go PSTN-digital line-asterisk-FXS port-modem performance will depend on the FXS port, and any internal timing issues. With a TDM400 card its fairly unlikely to work. With a channel bank connected to a port on the same digital card that connects to the PSTN chances are high. The problem with the PSTN-analogue line-asterisk-FXS port-modem path is signal degradation through the extra analogue-digital-analogue step is too much for V.34. For FAX modems up to V.29 it is no problem. For V.17 is tends to work if the port quality is good. Steve Hi Steve, Which fax-modem would you pick to highlight this behaviour ? I mean : If you had to buy a single fax-modem to complement a laptop to demonstrate a TDM or ToIP system is V.34 or V.17-capable, which fax-modem would you choose ? You launch a shell-script from your laptop and it sends 5 or 6 faxes with the same content to a given destination (always the same one) at different speeds or protocols. Reading destination fax machine's reception report, you can rate each sending and tell what your System Under Test is capable of. I thought I had clearly said this was related to the nature of the path, and has little to do with the specific modem you use. Steve ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
2006/5/16, Rich Adamson [EMAIL PROTECTED]: So I was telling myself : what if I could buy the most inclusive fax-modem, connect it to a PC, and run a bunch of test scripts to gather useful information on both production and preparation systems ?. Total waste of money as the problem isn't the fax modem as noted above.Hi,In this case, the fax machine doesn't hangup (*) when connected to TDM400P FXS port.It seems related to electrical incompatibilities we couldn't remove with the help of Digium support though I can't personnally tell how far we really went into studying this case with them. You're certainly right in that electrical incompatibilities involve TDM400P capacities and Sangoma's A200D behaves differently.Reading past requests on this list, I saw people had fax machines working with TDM400P. So there must be something somewhere explaining why it doesn't work in my case.I thought a super fax-modem could be used as a reference case : you send faxes with as many different settings as possible (speeds, protocols, flash signals levels, ...) and then analyse performances. Regards(*) By fax doesn't hangup, I mean though Asterisk server forward an incoming fax call to the right extension, it keeps on ringing the fax machine which never hangup. Maybe the flash signal is too weak ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
So I was telling myself : what if I could buy the most inclusive fax-modem, connect it to a PC, and run a bunch of test scripts to gather useful information on both production and preparation systems ?. Total waste of money as the problem isn't the fax modem as noted above. Hi, In this case, the fax machine doesn't hangup (*) when connected to TDM400P FXS port. It seems related to electrical incompatibilities we couldn't remove with the help of Digium support though I can't personnally tell how far we really went into studying this case with them. Are you in the US? You might try using a plain old voltmeter on tip ring to see if there is any form of disconnect signal. In the US, you should see the voltmeter going to zero volts for at least a 1/4 second or so. If you don't see the disconnect, then the problem is asterisk/tdm oriented. If you do see the disconnect, the problem is in the fax machine. You're certainly right in that electrical incompatibilities involve TDM400P capacities and Sangoma's A200D behaves differently. Reading past requests on this list, I saw people had fax machines working with TDM400P. Some folks have been able to make it work, but its a very small percentage of implementations. The general consensus is that if zttest reports anything less then about 99%, faxes will not work properly. The problem seems to be oriented around missed/lost data frames (across the pci bus) every xx number of seconds using the TDM card. If the missed/lost data occurs when the fax modem is actually sending data, the reproduced analog signal will be distorted. If it occurs between bursts of fax data, its less impacting. Its similar to clock slippage where clocking regains sync after xx seconds. The same missed/lost data frames occur with the A200D, negatively impacting fax modem usage if the fax call crosses the pci bus. However, if the fax call stays on the A200D (as in fxs - fxo on the exact same card), faxes function very reliably. So there must be something somewhere explaining why it doesn't work in my case. I thought a super fax-modem could be used as a reference case : you send faxes with as many different settings as possible (speeds, protocols, flash signals levels, ...) and then analyse performances. That might provide some insight into the issue, but I don't believe its going to provide much in terms of root cause. Regards (*) By fax doesn't hangup, I mean though Asterisk server forward an incoming fax call to the right extension, it keeps on ringing the fax machine which never hangup. Maybe the flash signal is too weak I'm very confused by the above statement. What do you mean by it keeps on ringing and machine never hangup in the same sentence? (No such thing as it keeps ringing and never hangup. Hangup occurs after answering, so if its ringing, it can't hangup.) What do you mean by flash signal is too weak? (There's no such thing as a weak flash. Sort of equivalent to saying a weak binary 1.) ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
2006/5/15, Rich Adamson [EMAIL PROTECTED]: Which fax-modem would you pick if you had to test fax capabilities ?The fax modem is not really the issue with asterisk. By far, themajority of existing analog fax machines installed and being sold today will function just fine with asterisk.Hi Rich,I got problems connecting a Brother 8360P (http://www.brother.co.uk/g3.cfm/s_page/50670/s_level/17020/s_product/FAX8360PU1 )to a Digium TDM400P card on a production system.This fax is running OK when directly plugged to PSTN but cannot seem to hangup when connected to Digium TDM400P card.We prepare deployment on a separate system and I cannot unplug this fax machine and move it to our test environment (which is on a different location). I'm doomed to try to reproduce the bug with another fax machine.And as you can guess, we were unsuccessful yet to reproduce it with the couple of (entry level) fax machines I could get a hand on.So I was telling myself : what if I could buy the most inclusive fax-modem, connect it to a PC, and run a bunch of test scripts to gather useful information on both production and preparation systems ?. For example, it seems that Brother 8360P uses Super G3 mode.Is there a fax-modem offering such capability so that I could easily check if I still cannot hangup when I enable or disable Super G3 mode ? Ideally, I would run a batch script with a fax-modem-equiped-PC to gather compliance inputs against V34 and other fax standards.Your advice underlining A200D PCM switching capability is very relevant, anyway, as it shows a way to prove a fax issue can be solved changing or configuring an analog TDM board. Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Olivier Krief wrote: For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannot hangup when I enable or disable Super G3 mode ? MultiTech 5634-series and MainPine RockForce fax modems (Agere chipset) support SuperG3. You'd run these with HylaFAX, for example, and not Asterisk. Lee. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
2006/5/16, Lee Howard [EMAIL PROTECTED]: Olivier Krief wrote: For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannothangup when I enable or disable Super G3 mode ? MultiTech 5634-series and MainPine RockForce fax modems (Agere chipset)support SuperG3.You'd run these with HylaFAX, for example, and notAsterisk.Hi,Would you use such modems to run a batch script to check various fax protocols ( V.34, super G3, ...) ?Would it be easy with Hylafax to change modem settings so that first attempt is made in V.34, second attempt with ECM, third without ECM etc.. and all that without human interaction ?Cheers ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Which fax-modem would you pick if you had to test fax capabilities ? The fax modem is not really the issue with asterisk. By far, the majority of existing analog fax machines installed and being sold today will function just fine with asterisk. Hi Rich, I got problems connecting a Brother 8360P (http://www.brother.co.uk/g3.cfm/s_page/50670/s_level/17020/s_product/FAX8360PU1 http://www.brother.co.uk/g3.cfm/s_page/50670/s_level/17020/s_product/FAX8360PU1) to a Digium TDM400P card on a production system. This fax is running OK when directly plugged to PSTN but cannot seem to hangup when connected to Digium TDM400P card. The TDM400P card is the problem, not the fax machine. The issues with the TDM card have been discussed many times over the last two years, and mostly relate to the transfer of data packets between the card and the motherboard/OS. Its my understanding (which could be less then accurate) the problem has to do with clocking that leads to missed frames, which has a serious impact on reproducing any analog modem signals. So I was telling myself : what if I could buy the most inclusive fax-modem, connect it to a PC, and run a bunch of test scripts to gather useful information on both production and preparation systems ?. Total waste of money as the problem isn't the fax modem as noted above. For example, it seems that Brother 8360P uses Super G3 mode. Is there a fax-modem offering such capability so that I could easily check if I still cannot hangup when I enable or disable Super G3 mode ? Ideally, I would run a batch script with a fax-modem-equiped-PC to gather compliance inputs against V34 and other fax standards. Your advice underlining A200D PCM switching capability is very relevant, anyway, as it shows a way to prove a fax issue can be solved changing or configuring an analog TDM board. The A200D approach only works if the fax machine is directly connected to an fxs module on the A200D, and the pstn line is directly connected to an fxo module on the exact same A200D card. Rumor has it that Digium is working on new card(s) that may also support faxing, but nothing has been announced as yet to my knowledge. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Olivier Krief wrote: Would you use such modems to run a batch script to check various fax protocols ( V.34, super G3, ...) ? You could, yes. Would it be easy with Hylafax to change modem settings so that first attempt is made in V.34, second attempt with ECM, third without ECM etc.. and all that without human interaction ? It would be a straight-forward process, yes. As to how easy it would be... well, that would depend upon your familiarity with fax modems and HylaFAX. Lee. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Which is the best fax-modem for testing ?
Hi, Which fax-modem would you pick if you had to test fax capabilities ? For instance, before releasing a new PBX system offering fax connectivity, you would like to make sure you "comply" withmost fax machines and protocols. As you can't afford you buy and maintain tens of such fax machines nor can't afford to test by hand each protocol, it's tempting to buy an all-inclusive fax-modem and run a program instead. Which one would you choose for that ? Regards ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best fax-modem for testing ?
Which fax-modem would you pick if you had to test fax capabilities ? For instance, before releasing a new PBX system offering fax connectivity, you would like to make sure you comply with most fax machines and protocols. As you can't afford you buy and maintain tens of such fax machines nor can't afford to test by hand each protocol, it's tempting to buy an all-inclusive fax-modem and run a program instead. Which one would you choose for that ? The fax modem is not really the issue with asterisk. By far, the majority of existing analog fax machines installed and being sold today will function just fine with asterisk. If you sell an asterisk system into an analog pstn environment, any fax machine will function through asterisk if you use the Sangoma A200D analog card with fxo and fxs modules. (Very stable and very reliable fax transmissions.) If you sell an asterisk system into a digital pstn environment (eg, PRI), any fax machine will work with Sangoma or Digium digital cards, however the fxs interface to the fax machine may be very questionable in terms of reliability and usability. If you sell an asterisk system with external pstn gateways (eg, ATA adapters), better be careful as the majority of inexpensive gateways will not function reliably with an analog fax machine. If you're thinking T.38 fax capability, forget it for now. Some folks were working on adding T.38 support into asterisk, but its not in stable code as yet to the best of my knowledge. Also, according to Steve Underwood, T.38 implementations in current fax machines are of questionable quality. If you're thinking in terms of high volume faxing, then look towards the hylafax (or whatever) approach. If you're thinking in terms of faxing via VoIP providers, reliability will be less then acceptable if you get it to work at all. Bottom line: the most reliable method of integrating fax support into an asterisk system today (without implementing hylafax or whatever) is through the use of the Sangoma A200D analog card, as it keeps the pcm data flow on the card (fxs - fxo); and, removes the impact that pci bus, shared interrupts, system applications, ethernet dropped packets or jitter, ATA issues, and other disruptive elements from the analog fax data path. If you search the list archives for the past two years, you'll find a couple of point solutions other then mentioned above that do work, but most of them are dependent on some specific element (eg, full moon) that cannot be reliably replicated in every asterisk installation. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Which is the best fax-modem for testing ?
Hi Rich Adamson, I am very happy to get such rich fax on Asterisk info. But I still have a question. If I have some external pstn gateway, they could send fax very well in peer to peer mode, Can it work with asterisk? How to do it? Thanks. Hawk -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Adamson Sent: Tuesday, May 16, 2006 3:43 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Which is the best fax-modem for testing ? Which fax-modem would you pick if you had to test fax capabilities ? For instance, before releasing a new PBX system offering fax connectivity, you would like to make sure you comply with most fax machines and protocols. As you can't afford you buy and maintain tens of such fax machines nor can't afford to test by hand each protocol, it's tempting to buy an all-inclusive fax-modem and run a program instead. Which one would you choose for that ? The fax modem is not really the issue with asterisk. By far, the majority of existing analog fax machines installed and being sold today will function just fine with asterisk. If you sell an asterisk system into an analog pstn environment, any fax machine will function through asterisk if you use the Sangoma A200D analog card with fxo and fxs modules. (Very stable and very reliable fax transmissions.) If you sell an asterisk system into a digital pstn environment (eg, PRI), any fax machine will work with Sangoma or Digium digital cards, however the fxs interface to the fax machine may be very questionable in terms of reliability and usability. If you sell an asterisk system with external pstn gateways (eg, ATA adapters), better be careful as the majority of inexpensive gateways will not function reliably with an analog fax machine. If you're thinking T.38 fax capability, forget it for now. Some folks were working on adding T.38 support into asterisk, but its not in stable code as yet to the best of my knowledge. Also, according to Steve Underwood, T.38 implementations in current fax machines are of questionable quality. If you're thinking in terms of high volume faxing, then look towards the hylafax (or whatever) approach. If you're thinking in terms of faxing via VoIP providers, reliability will be less then acceptable if you get it to work at all. Bottom line: the most reliable method of integrating fax support into an asterisk system today (without implementing hylafax or whatever) is through the use of the Sangoma A200D analog card, as it keeps the pcm data flow on the card (fxs - fxo); and, removes the impact that pci bus, shared interrupts, system applications, ethernet dropped packets or jitter, ATA issues, and other disruptive elements from the analog fax data path. If you search the list archives for the past two years, you'll find a couple of point solutions other then mentioned above that do work, but most of them are dependent on some specific element (eg, full moon) that cannot be reliably replicated in every asterisk installation. ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. That's not true. In fact, most US telco switches do support disconnect supervision. Are you sure your not confusing disconnect supervision with something else, maybe which end of a call 'controls' the disconnect signalling? There are likely lots of US systems that are oriented around calling party control verses called party control of disconnect. But once the central office has decided to disconnect the call (regardless of cause) you should see disconnect supervision in the US in the form of either a drop of tip-ring voltage (to nothing) for about 400 milliseconds or so, or polarity reversal for the same approx 400 milliseconds. (Both can easily been seen with a cheap voltmeter placed across tip/ring.) ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
On Sat, 2004-11-27 at 09:11 -0600, Rich Adamson wrote: Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. That's not true. In fact, most US telco switches do support disconnect supervision. Are you sure your not confusing disconnect supervision with something else, maybe which end of a call 'controls' the disconnect signalling? Please reread James' comment. He didn't say it wasn't supported. He said it was not normally enabled. -- Steven Critchfield [EMAIL PROTECTED] ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. That's not true. In fact, most US telco switches do support disconnect supervision. Are you sure your not confusing disconnect supervision with something else, maybe which end of a call 'controls' the disconnect signalling? Please reread James' comment. He didn't say it wasn't supported. He said it was not normally enabled. I _think_ I read it correctly the first time. Isn't the original question oriented around call control as opposed to 'disconnect supervision'? Disconnect supervision _is_ the signaling that a call has terminated (via zero voltage on tip/ring), and the majority of US telco switch vendors implement that as a default. Who gets to originate the disconnect is the issue, right? Or, do I need more coffee? :) ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
On Sat, 2004-11-27 at 10:17 -0600, Rich Adamson wrote: I _think_ I read it correctly the first time. Isn't the original question oriented around call control as opposed to 'disconnect supervision'? Disconnect supervision _is_ the signaling that a call has terminated (via zero voltage on tip/ring), and the majority of US telco switch vendors implement that as a default. Who gets to originate the disconnect is the issue, right? Or, do I need more coffee? :) When you go all the way back to the original question, it was about the signalling from asterisk via an FXS port to a phone via a TDM400 card. So maybe some more coffee might be a good idea, but a threaded mail reader that lets you quickly check back up the thread is better. -- Steven Critchfield [EMAIL PROTECTED] ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. That's not true. In fact, most US telco switches do support disconnect supervision. Are you sure your not confusing disconnect supervision with something else, maybe which end of a call 'controls' the disconnect signalling? There are likely lots of US systems that are oriented around calling party control verses called party control of disconnect. But once the central office has decided to disconnect the call (regardless of cause) you should see disconnect supervision in the US in the form of either a drop of tip-ring voltage (to nothing) for about 400 milliseconds or so, or polarity reversal for the same approx 400 milliseconds. (Both can easily been seen with a cheap voltmeter placed across tip/ring.) That's what I was looking for and the telco wasn't providing it. I found this in both Pennsylvania and New Hampshire. Both were little mom pop phone companies. They said that DS can cause a click in the reciever of some phones so they normally turned it off. ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
james wrote: Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. Or maybe they'll respond the way that my local telco, The Monon Telephone Company, did: Yes, we could certainly enable that feature for you, since it is a trivial feature on our switch. But our tariffs don't require us to do that for residential customers, so we won't do it for you. End of discussion. Thank you for calling. The only consolation is the knowledge that soon there will be no need for them, and it's almost certain they don't see it coming. B. ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Which is the best signalling for FXS
[EMAIL PROTECTED] wrote: james wrote: Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. It is also my understanding that most local exchanges (in the US) don't enable disconnect supervision by default. I had to ask my telephone company to enable it. Or maybe they'll respond the way that my local telco, The Monon Telephone Company, did: Yes, we could certainly enable that feature for you, since it is a trivial feature on our switch. But our tariffs don't require us to do that for residential customers, so we won't do it for you. End of discussion. Thank you for calling. The only consolation is the knowledge that soon there will be no need for them, and it's almost certain they don't see it coming. Don't trouble me with iceberg reports: this ship is unsinkable! Full steam ahead! ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Which is the best signalling for FXS
Hi All, Which is the best signalling to use when connecting an FXS inteface on a TDM400 to a standard telephone. I see that all examples use fxo_ks, but it is my understanding that kewl start is really designed for connections to the CO so that hangup etc. can be detected. So does it make any sense to configure a telephone for fxo_ks? Or should it be configured for fxo_ls? Regards Garry Taylor ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Which is the best signalling for FXS
On Sat, 2004-11-27 at 13:18 +0800, Garry Taylor wrote: Hi All, Which is the best signalling to use when connecting an FXS inteface on a TDM400 to a standard telephone. I see that all examples use fxo_ks, but it is my understanding that kewl start is really designed for connections to the CO so that hangup etc. can be detected. So does it make any sense to configure a telephone for fxo_ks? Or should it be configured for fxo_ls? Kewlstart is for disconnect supervision. If you have a simple phone connected, it doesn't make much difference what your signalling is as the human will actually hangup the phone. If you hookup another device that might actually need the supervision like a modem/faxmachine/whatever, you will still want disconnect supervision. As far as technical best, out side of the disconnect supervision, the kewlstart and loopstart are equivalent. -- Steven Critchfield [EMAIL PROTECTED] ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
