[asterisk-users] Digium TDM400P Vs Sangoma A200
I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. Thanks, Jon ___ --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] Digium TDM400P Vs Sangoma A200
Jonathan Borden wrote: I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. The sangoma a200d does a much better job in terms of audio quality (eg, no echo) compared to the tdm400p. The difference is primarily in the hardware echo canceler implementation on the a200d. The tdm400p does a fine job on pstn loops that are relatively short where the software echo canceler seems to be able to handle echo. Neither card seems to have any issues with early failures, etc, and there are no guarantees from either vendor as to future support. ___ --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] Digium TDM400P Vs Sangoma A200
The A200 is a far better card. More forgiving of Motherboards, MUCH more expandable, slightly lower cost. Only real drawback is modules are in pairs, so if you want 4 FXO, you need to buy 4. It expands to 24 ports using one PCI slot Also, if you ever are rich, hardware echo cancel is an option John Novack Jonathan Borden wrote: I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. Thanks, Jon ___ --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] Digium TDM400P Vs Sangoma A200
Sangoma has a better PCI interface so no interrupt or compatibility issues like you get with the Digium card. Sangoma will also upgrade the card to a version with hardware echo cancellation if you cannot solve your echo problems with the software echo cancellers. I believe you send the card in and pay thecostof the hardware echo can module. From: Jonathan Borden [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 16, 2006 8:41 AMTo: 'Asterisk Users Mailing List - Non-Commercial Discussion'Subject: [asterisk-users] Digium TDM400P Vs Sangoma A200 I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. Thanks, Jon ___ --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] Digium TDM400P Vs Sangoma A200
Correction... it only plugs into one pci slot, but anything beyond four ports covers up additional pci slots (even though it doesn't plug into the pci connector). So, a 24 port a200 card would essentially render all pci slots unusable due to size. The tdm2400 card consumes a single pci slot, but its length is so long that on many systems one would need to use a tin's snip to cut the fixed disk drive bays out of the way to make it fit. John Novack wrote: The A200 is a far better card. More forgiving of Motherboards, MUCH more expandable, slightly lower cost. Only real drawback is modules are in pairs, so if you want 4 FXO, you need to buy 4. It expands to 24 ports using one PCI slot Also, if you ever are rich, hardware echo cancel is an option John Novack Jonathan Borden wrote: I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. ___ --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] Digium TDM400P Vs Sangoma A200
Rich Adamson wrote: Correction... it only plugs into one pci slot, but anything beyond four ports covers up additional pci slots (even though it doesn't plug into the pci connector). So, a 24 port a200 card would essentially render all pci slots unusable due to size. Depends on where the MB lives in the case, to be sure. Some ( rack mount, to be sure ) cases have many more openings for cards than modern MB's And growing much beyond 8 ports would seem to dictate another solution, perhaps a T1? Not having a need I haven't looked closely at the economics, but a Sangoma T1 card and a used Adtran would be in the neighborhood. Regardless the A200 works with a much larger selection of MB's and Sangoma doesn't tell you to try another motherboard! JN The tdm2400 card consumes a single pci slot, but its length is so long that on many systems one would need to use a tin's snip to cut the fixed disk drive bays out of the way to make it fit. John Novack wrote: The A200 is a far better card. More forgiving of Motherboards, MUCH more expandable, slightly lower cost. Only real drawback is modules are in pairs, so if you want 4 FXO, you need to buy 4. It expands to 24 ports using one PCI slot Also, if you ever are rich, hardware echo cancel is an option John Novack Jonathan Borden wrote: I was wondering which of these cards would be better for a 1-2 line SOHO. I would like room to grow as well as I am concerned with voice quality and life expectancy of the product. Any input into which one and why would be greatly appreciated. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
Mike Clark [EMAIL PROTECTED] wrote: If you aren't going for the echo cancellation, then I think either card will do fine. We are now deploying only the A200 because we never know if echo will be an issue or if it can be tuned away Thanks, Mike. That's a good point in favour of the A200 - it's cheap to add the hardware echo canceller if it's needed. Nick. -- Nick Chalk . once a Radio Designer Confidence is failing to understand the problem. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
John Novack [EMAIL PROTECTED] wrote: Though many will probably disagree, you will be LOTS better off with the Sangoma A200 It is MUCH more forgiving regarding Motherboards and the PCI 2.2 requirement, That's one of my concerns. I'm working with refurbished hardware, so don't have much freedom of choice in motherboards. I'm planning on using a fairly good Intel dual- socket-370 server board, but I can't afford to make the wrong choice. even though the software installation instructions leave much to be desired for the inexperienced, Is that inexperienced in telephony, or inex- perienced in Linux? I have zero telephony experience, but plenty with Linux. :-) Nick. -- Nick Chalk . once a Radio Designer Confidence is failing to understand the problem. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
Chris Bagnall [EMAIL PROTECTED] wrote: The site in Northampton with 3 FXO has been an absolute nightmare over the last 9 months the system's been in place. Once asterisk 1.2 was deployed, things improved remarkably. Do you think that was improved code in v1.2, or the result of your calibration? I took the time on-site to properly configure the txgain and rxgain using a milliwatt tone coming from one of our other servers in a datacentre Is that procedure documented somewhere? I've found the asterisk config for generating the tone, but what are you measuring on the test system to set the correct gains? One thing worth checking with BT - if you can find someone who can give you an accurate answer :-) - is whether the Featureline will give you disconnect supervision. If it will, so much the better, as * 1.2 seems to have usable support for it. Thanks, I'll look into that. It's still not as good as the building next door where they have 2 ISDN BRIs Yes, that might make life easier. I don't think I can make the argument for converting to ISDN yet, though. :-/ Thanks, Chris! Nick. -- Nick Chalk . once a Radio Designer Confidence is failing to understand the problem. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
Evening all. I'm looking at building an Asterisk system for one of the projects of the Charity where I'm the SysAdmin. The project has two analogue phone lines - BT Featureline Compact, we're in the UK - that I'd like Asterisk to handle. My current quandary is which FXO interface to use. I've been looking at the Digium TDM400P and Sangoma A200, which are similar prices for two FXO lines. Can anyone comment on the relative merits of those two devices? Are there any other options in the same price range? As we're a small Charity, price is a major consideration. I don't think we can afford the A200's hardware echo-canceller, for instance. Thanks for your help. Nick. -- Nick Chalk . once a Radio Designer Confidence is failing to understand the problem. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
Nick Chalk wrote: Evening all. I'm looking at building an Asterisk system for one of the projects of the Charity where I'm the SysAdmin. The project has two analogue phone lines - BT Featureline Compact, we're in the UK - that I'd like Asterisk to handle. My current quandary is which FXO interface to use. I've been looking at the Digium TDM400P and Sangoma A200, which are similar prices for two FXO lines. Can anyone comment on the relative merits of those two devices? Are there any other options in the same price range? As we're a small Charity, price is a major consideration. I don't think we can afford the A200's hardware echo-canceller, for instance. Thanks for your help. Nick. Nick: If you aren't going for the echo cancellation, then I think either card will do fine.We have over twenty five systems deployed in rural eastern North Carolina locations with six analog lines each and the majority work fine with TDM400s, though we have had to replace several with Sangoma A200 with echo cancellation to eliminate echo. We are now deploying only the A200 because we never know if echo will be an issue or if it can be tuned away and it is just easier for support to not have that worry. Mike Clark ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
Though many will probably disagree, you will be LOTS better off with the Sangoma A200 It is MUCH more forgiving regarding Motherboards and the PCI 2.2 requirement, even though the software installation instructions leave much to be desired for the inexperienced, it does work, and Sangoma fixed a problem I discovered with their FXS module software. My first experience with Digium and the TDM400 was, when it couldn't be seen in a motherboard that said it was PCI 2.2, Digium's response was try another motherboard John Novack Nick Chalk wrote: Evening all. I'm looking at building an Asterisk system for one of the projects of the Charity where I'm the SysAdmin. The project has two analogue phone lines - BT Featureline Compact, we're in the UK - that I'd like Asterisk to handle. My current quandary is which FXO interface to use. I've been looking at the Digium TDM400P and Sangoma A200, which are similar prices for two FXO lines. Can anyone comment on the relative merits of those two devices? Are there any other options in the same price range? As we're a small Charity, price is a major consideration. I don't think we can afford the A200's hardware echo-canceller, for instance. Thanks for your help. Nick. ___ --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] Digium TDM400P vs Sangoma A200 for 2 x FXO
I've no experience with the A200, so I can't really pass judgement on it. We have 2 sites with TDM400P cards currently deployed (one with 3 FXO, the other with 1 FXO and 3 FXS). The site in Northampton with 3 FXO has been an absolute nightmare over the last 9 months the system's been in place. Initially we had big problems with echo that no amount of tweaking of the echo parameters would fix. Once asterisk 1.2 was deployed, things improved remarkably. I took the time on-site to properly configure the txgain and rxgain using a milliwatt tone coming from one of our other servers in a datacentre (rather than relying on using ztmonitor -v whilst the client was making/receiving calls - you can't guarantee whether the party they're talking to has *their* gains properly configured, which means you end up with completely different results on every call). Once I'd got the gains properly configured, fairly standard echo cancellation settings of on and echotraining=800 seem to work relatively well. One thing worth checking with BT - if you can find someone who can give you an accurate answer - is whether the Featureline will give you disconnect supervision. If it will, so much the better, as * 1.2 seems to have usable support for it. If it works reliably, you can increase the number of busy tones to detect before a channel is killed (this will massively reduce incidences of false hangups). It's still not as good as the building next door where they have 2 ISDN BRIs, but it works, and I've not had any complaints for the last month since their box was upgraded to 1.2. Hope that helps. (shameless plug - I have a spare TDM400 card here if you're looking to acquire one at a reduced price - discuss off-list if interested) Regards, Chris -- C.M. Bagnall, Director, Minotaur I.T. Limited This email is made from 100% recycled electrons ___ --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
