Re: [asterisk-users] Digium TE120P versus Sangoma A101D-X
Paul Hales wrote: But a single port E1 card with hardware echo cancellationpossible? Yes, I would say that is definitely possible (wink wink). -- Kevin P. Fleming Director of Software Technologies Digium, Inc. - The Genuine Asterisk Experience (TM) ___ --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] Digium TE120P versus Sangoma A101D-X
Paul Hales wrote: I also understand your stand here Kevin - there is no way you can restrict the software running on a server out in the wild, and no way to make sure the software they are running will not conflict in any way. But a single port E1 card with hardware echo cancellationpossible? Hold that thought just for a little bit :-) -- Matthew Fredrickson Software/Firmware Engineer Digium, 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
[asterisk-users] Digium TE120P versus Sangoma A101D-X
Hello List, We purchased a TE120P card from Digium and it works great. The only problem is that we are still experiencing echo on some calls. I've tried various echo cancellers (right now we are using OSLEC) and still no luck. My question has anyone gone from the TE120P to a Sangoma A101D-X Single Port T1/E1/J1 w/ echo cancellation? Have you noticed a difference? Also I called Digium about this and their tech support does not recommend using their HLEC software canceller on T1 cards since it consumes so much CPU. I was ready to get the license keys for HLEC but when I was transferred to sales person they would not give me the keys stating that I have to have an analog card to obtain the license. Thanks Roy Anciso Director of Technology Manistee Intermediate School District 1710 Merkey Road Manistee, MI 49660 Ph: 231-723-4264 Fx: 231-723-1690 [EMAIL PROTECTED] ___ --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] Digium TE120P versus Sangoma A101D-X
Anciso, Roy wrote: Also I called Digium about this and their tech support does not recommend using their HLEC software canceller on T1 cards since it consumes so much CPU. I was ready to get the license keys for HLEC but when I was transferred to sales person they would not give me the keys stating that I have to have an analog card to obtain the license. I've had this argument with Digium before -- their position is a crock. As you can see from my analysis below, one can certainly run the HPEC on a full T1 PRI span if you have a fast enough processor. Digium, however, has made the business decision not to provide HPEC keys for their T1 card for reason they do not explain and which I cannot fathom. We installed a customer with a TE120 and a fractional PRI (12 B channels). We asked for an HPEC key which they gave us (now, they claim, by mistake) and it works fine -- solved all echo problems and no CPU problems. Would presume (hope) Digium, would sell you an HPEC licence as they do for non-Digium analog hardware -- a 23-channel licence would cost $230 -- might be cheaper than going to Sangoma. Or perhaps go to Sangoma to teach Digium a lesson? Here is my analysis of CPU power required to run HPEC on a full PRI span: 1. The Digium website says: "8 channels at 1024 taps requires 3GHz P4" 2. If we look at the SPEC2000 results for this processor, we find (http://www.spec.org/cpu2000/results/) that a 3GHz P4 has a CINT2000 per CPU rating of roughly 1200 and a CINT2000 rate of 12. (I'm using the older SPEC2000 benchmark because the older P4 processors are not included in the SPEC2006 result database.) 3. If we look at the SPEC2000 results for, say, an Intel X3210 Quad-Core Xeon, we find each core rates about 2200 (i.e. 8800 for the system), and the system as a whole has a CINT2000 rate of 90. In summary, an X3210 processor has roughly 7.5 the processing power of a 3GHz P4, therefore, it ought to be handle roughly 7.5 x 8 channels or 60 channels. Therefore, handling a single T1 span (23 channels) ought to be easy. If anyone on this list spots a flaw in this analysis, please let me know. Let us know what you decide to do (and, if you purchase an HPEC licence for your T1 card, the results). -- George Pajari (dCAP), netVOICE communications 604 484 VOIP(8647) x102 www.netvoice.ca www.ip-centrex.ca www.ip-pbx.ca www.vpas.ca www.digium.ca www.grandstream.ca www.sipura.ca www.snom.ca Open Source VoIP/Telephony Specialists 1 877 NET VOIP (638 8647 x102) ___ --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] Digium TE120P versus Sangoma A101D-X
George Pajari wrote: [HTML-only body] It's funny how your own message headers tell you what went wrong: ---cut--- X-Uniserve-Spam-Score: 2.3 23 (++) X-Uniserve-Spam-Report: Content analysis details: (2.3 points) pts rule name description -- -- 1.1 HTML_50_60 BODY: Message is 50% to 60% HTML 0.0 HTML_MESSAGE BODY: HTML included in message 1.2 MIME_HTML_ONLY BODY: Message only has text/html MIME parts ---cut--- Regards, Philipp Kempgen -- amooma GmbH - Bachstr. 126 - 56566 Neuwied - http://www.amooma.de Let's use IT to solve problems and not to create new ones. Asterisk? - http://www.das-asterisk-buch.de Geschäftsführer: Stefan Wintermeyer Handelsregister: Neuwied B 14998 ___ --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] Digium TE120P versus Sangoma A101D-X
George Pajari wrote: I've had this argument with Digium before -- their position is a crock. As you can see from my analysis below, one can certainly run the HPEC on a full T1 PRI span if you have a fast enough processor. Digium, however, has made the business decision not to provide HPEC keys for their T1 card for reason they do not explain and which I cannot fathom. It is very easy to understand, if you are in our position of having to support the product and deal with end users who don't have the technical knowledge that you do. The last thing we want is for someone who has a single port T1 card in a 2GHz P4 machine call and get a 24-channel HPEC key only to find out that the performance is poor (or worse), and claim that it is our fault. In summary, an X3210 processor has roughly 7.5 the processing power of a 3GHz P4, therefore, it ought to be handle roughly 7.5 x 8 channels or 60 channels. Therefore, handling a single T1 span (23 channels) ought to be easy. If anyone on this list spots a flaw in this analysis, please let me know. Well, there's no 'flaws', except for the assumption that the user who has the single-port T1 card already has a quad-core Xeon machine to plug it into. If they don't, the price difference between the 3GHz P4 and the X3210 machine is likely to be greater than the cost of the hardware echo canceler option for the single-port T1 card, in which case that's both easier and cheaper for the user to purchase, especially if they are installing this card into an existing server. At this time Digium isn't selling a single-port T1 card with a hardware echo canceler so this is somewhat of a moot point, I suppose :-) -- Kevin P. Fleming Director of Software Technologies Digium, Inc. - The Genuine Asterisk Experience (TM) ___ --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] Digium TE120P versus Sangoma A101D-X
I also understand your stand here Kevin - there is no way you can restrict the software running on a server out in the wild, and no way to make sure the software they are running will not conflict in any way. But a single port E1 card with hardware echo cancellationpossible? PaulH On Wed, 2007-11-28 at 17:22 -0600, Kevin P. Fleming wrote: George Pajari wrote: I've had this argument with Digium before -- their position is a crock. As you can see from my analysis below, one can certainly run the HPEC on a full T1 PRI span if you have a fast enough processor. Digium, however, has made the business decision not to provide HPEC keys for their T1 card for reason they do not explain and which I cannot fathom. It is very easy to understand, if you are in our position of having to support the product and deal with end users who don't have the technical knowledge that you do. The last thing we want is for someone who has a single port T1 card in a 2GHz P4 machine call and get a 24-channel HPEC key only to find out that the performance is poor (or worse), and claim that it is our fault. In summary, an X3210 processor has roughly 7.5 the processing power of a 3GHz P4, therefore, it ought to be handle roughly 7.5 x 8 channels or 60 channels. Therefore, handling a single T1 span (23 channels) ought to be easy. If anyone on this list spots a flaw in this analysis, please let me know. Well, there's no 'flaws', except for the assumption that the user who has the single-port T1 card already has a quad-core Xeon machine to plug it into. If they don't, the price difference between the 3GHz P4 and the X3210 machine is likely to be greater than the cost of the hardware echo canceler option for the single-port T1 card, in which case that's both easier and cheaper for the user to purchase, especially if they are installing this card into an existing server. At this time Digium isn't selling a single-port T1 card with a hardware echo canceler so this is somewhat of a moot point, I suppose :-) ___ --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
