Re: [Asterisk-Users] Re: Connection TDM400P to UK PSTN
Hey all would you believe this problem is still going on? I have now successfully secured individual IRQs for the two TDM cards, but no change has been observed. No interrupts appear to be getting dropped or anything along those lines. Also tried moving the FXO and FXS modules around on the cards. No changes -- not completely clear if the card is defective or not. Can you shed any light on that? I am using Zaptel 1.2.2, with the MG2 echo canceller, but only with Asterisk 1.0.9. I am not prepared to upgrade to a more recent 1.2 version unless I think that will provide massive benefits (I don't think it will affect my zaptel/echo problem?) Back to the card situation: we have not tried any other machines or cards. We are starting to consider using a different card -- and would prefer to stick with Digium hardware. The newer, larger, TDM2400 is under consideration because it has echo cancellation onboard --- Do you think this will do anything?? Also, tried the phone on the phoneline straight up -- sounded fine. We tried the phoneline with a US phone and also a UK one. So is hardware EC the solution to my woes? Chris - Original Message - From: Chris Earle (CBL) [EMAIL PROTECTED] To: Chris Bagnall [EMAIL PROTECTED]; 'Asterisk Users Mailing List - Non-Commercial Discussion' asterisk-users@lists.digium.com Sent: Monday, January 23, 2006 5:24 PM Subject: Re: [Asterisk-Users] Re: Connection TDM400P to UK PSTN Thanks for that, insightful The quality on both ends with those settings is quite good -- but the extension side still has a ridiculous -- almost duplicate -- echo! If I turn the txgain right down, I lose all sound.of course the signals in ztmonitor show up perfect then, but can't hear anything (DTMF tones too low or whatever...) Still wondering if it's an impedance issue...or something along those lines/chipset..etc I'm going to attempt upgrading Zaptel now, without upgrading the asterisk Chris - Original Message - From: Chris Bagnall [EMAIL PROTECTED] To: 'Chris Earle (CBL)' [EMAIL PROTECTED]; 'Asterisk Users Mailing List - Non-Commercial Discussion' asterisk-users@lists.digium.com Sent: Sunday, January 22, 2006 9:13 AM Subject: RE: [Asterisk-Users] Re: Connection TDM400P to UK PSTN Successfully got the adapters to allow the BT phones to ring on lines coming out of a TDM.. but now my latest problem is echo. Suggestions / Experiences in UK appreciated Most of our clients with BT lines tend to have ISDN BRIs, but we do have one in Northampton running 3 analogue lines from a TDM400. zaptel.conf is as follows: fxsks = 1-3 loadzone= uk defaultzone = uk The TDM driver is loaded with opermode=UK and the output from dmesg confirms this. Relevant settings from zapata.conf are as follows: echocancel=yes echocancelwhenbridged=yes echotraining=800 rxgain=8.0 txgain=-4.0 busydetect=yes group = 1 context = inbound channel = 1-2 group = 2 context = inbound channel = 3 They're running Asterisk/Zaptel 1.0.10. There were major echo issues when we first deployed the system back in September, but some careful tweaking of rxgain and txgain seems to have largely resolved the situation. Certainly my experience has been that rxgain and txgain have far more impact on echo reduction than any of the echo-specific settings. Get the gains right first, then play with the echo-specific settings. Regards, -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ --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] Re: Connection TDM400P to UK PSTN
Thanks for that, insightful The quality on both ends with those settings is quite good -- but the extension side still has a ridiculous -- almost duplicate -- echo! If I turn the txgain right down, I lose all sound.of course the signals in ztmonitor show up perfect then, but can't hear anything (DTMF tones too low or whatever...) Still wondering if it's an impedance issue...or something along those lines/chipset..etc I'm going to attempt upgrading Zaptel now, without upgrading the asterisk Chris - Original Message - From: Chris Bagnall [EMAIL PROTECTED] To: 'Chris Earle (CBL)' [EMAIL PROTECTED]; 'Asterisk Users Mailing List - Non-Commercial Discussion' asterisk-users@lists.digium.com Sent: Sunday, January 22, 2006 9:13 AM Subject: RE: [Asterisk-Users] Re: Connection TDM400P to UK PSTN Successfully got the adapters to allow the BT phones to ring on lines coming out of a TDM.. but now my latest problem is echo. Suggestions / Experiences in UK appreciated Most of our clients with BT lines tend to have ISDN BRIs, but we do have one in Northampton running 3 analogue lines from a TDM400. zaptel.conf is as follows: fxsks = 1-3 loadzone= uk defaultzone = uk The TDM driver is loaded with opermode=UK and the output from dmesg confirms this. Relevant settings from zapata.conf are as follows: echocancel=yes echocancelwhenbridged=yes echotraining=800 rxgain=8.0 txgain=-4.0 busydetect=yes group = 1 context = inbound channel = 1-2 group = 2 context = inbound channel = 3 They're running Asterisk/Zaptel 1.0.10. There were major echo issues when we first deployed the system back in September, but some careful tweaking of rxgain and txgain seems to have largely resolved the situation. Certainly my experience has been that rxgain and txgain have far more impact on echo reduction than any of the echo-specific settings. Get the gains right first, then play with the echo-specific settings. Regards, Chris -- C.M. Bagnall, Director, Minotaur I.T. Limited This email is made from 100% recycled electrons -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ --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] Re: Connection TDM400P to UK PSTN
Successfully got the adapters to allow the BT phones to ring on lines coming out of a TDM.. but now my latest problem is echo. Suggestions / Experiences in UK appreciated Most of our clients with BT lines tend to have ISDN BRIs, but we do have one in Northampton running 3 analogue lines from a TDM400. zaptel.conf is as follows: fxsks = 1-3 loadzone= uk defaultzone = uk The TDM driver is loaded with opermode=UK and the output from dmesg confirms this. Relevant settings from zapata.conf are as follows: echocancel=yes echocancelwhenbridged=yes echotraining=800 rxgain=8.0 txgain=-4.0 busydetect=yes group = 1 context = inbound channel = 1-2 group = 2 context = inbound channel = 3 They're running Asterisk/Zaptel 1.0.10. There were major echo issues when we first deployed the system back in September, but some careful tweaking of rxgain and txgain seems to have largely resolved the situation. Certainly my experience has been that rxgain and txgain have far more impact on echo reduction than any of the echo-specific settings. Get the gains right first, then play with the echo-specific settings. 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
[Asterisk-Users] Re: Connection TDM400P to UK PSTN
Okay, sorry to hash out this discussion again, but it's starting to drive me crazy Successfully got the adapters to allow the BT phones to ring on lines coming out of a TDM.. but now my latest problem is echo. I have done tweaking of the gains in North and South America, and after a bit of work have gotten echo to go away, but this seems to just not want to go away. On an incoming call from the POTS, everything on my end sounds perfect, but on the internal extension phone, there is an echo when you speak. An almost perfect copy of what you say. If I turn down the gains on that channel, it doesn't seem to do much, or causes other volume issues. Help! In my research and hunting, I am starting to worry that the US-bought digium cards have IMPEDENCE issues in the UK with the BT Lines etc? That would seem to explain why the echo is so incessant. I have even tried changing Echo Cancellers to MARK3. Right, this is Asterisk 1.0.9, Zaptel 1.0.9.2 on Debian Suggestions / Experiences in UK appreciated -- Chris Earle System Solutions Specialist, - Original Message - From: John Novack [EMAIL PROTECTED] Newsgroups: gmane.comp.telephony.pbx.asterisk.user Sent: Wednesday, August 24, 2005 10:03 AM Subject: Re: Connection TDM400P to UK PSTN The jacks on the TDM are ( incorrectly ) referred to as RJ45, correctly they are 8 position modular. The line, either in or out is on the two CENTER pins. NONE of the other 6 pins are used. Though I am not in the UK, from what I know you don't use the two center pins for a single line connection, so you will need to fashion some sort of adapter to connect. Frankly, using the two center pins ( A Bell System brain blizzard) wasn't the smartest idea. It makes the modular plug into, with the addition of just a little moisture, a really good spark gap when a ring signal or small induction of lightning is applied. I have seen many a modular plug turned black and useless since the introduction of modular in the US in the early 70's Good luck John Novack Graham Kiff wrote: I'm a complete Asterisk novice and have an installation based on the [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]CD. I've installed my TDM400P with 2 x FXO 2 x FXS, but every time I try to dial out, I get a message No circuits available. Can someone confirm the pinouts for connecting the FXO's to a UK BT Line - I have RJ11 connectors on the back of my TDM400P card, so ideally I'd like to know the pin mappings from a standard BT plug to RJ11. Cheers Graham ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ --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] Re: Connection TDM400P to UK PSTN
Chris: I had the same problem and gave up. (Gloucestershire) If I have the gains right down low (just enough so that the DTMF tones are recognised), the echo is acceptable, but audio at the far end is very low. I think that forwarding my POTS line to the VOIP line is the only sensible option, or back to my original thought of using an SPA3000. BTW, I tried building a matching network, briefly, but failed with that too. For the moment, I'm just using Asterisk for VOIP - but very pleased with that. Roger Chris Earle (CBL) wrote: Okay, sorry to hash out this discussion again, but it's starting to drive me crazy Successfully got the adapters to allow the BT phones to ring on lines coming out of a TDM.. but now my latest problem is echo. I have done tweaking of the gains in North and South America, and after a bit of work have gotten echo to go away, but this seems to just not want to go away. On an incoming call from the POTS, everything on my end sounds perfect, but on the internal extension phone, there is an echo when you speak. An almost perfect copy of what you say. If I turn down the gains on that channel, it doesn't seem to do much, or causes other volume issues. Help! In my research and hunting, I am starting to worry that the US-bought digium cards have IMPEDENCE issues in the UK with the BT Lines etc? That would seem to explain why the echo is so incessant. I have even tried changing Echo Cancellers to MARK3. Right, this is Asterisk 1.0.9, Zaptel 1.0.9.2 on Debian Suggestions / Experiences in UK appreciated -- Chris Earle System Solutions Specialist, - Original Message - From: John Novack [EMAIL PROTECTED] Newsgroups: gmane.comp.telephony.pbx.asterisk.user Sent: Wednesday, August 24, 2005 10:03 AM Subject: Re: Connection TDM400P to UK PSTN The jacks on the TDM are ( incorrectly ) referred to as RJ45, correctly they are 8 position modular. The line, either in or out is on the two CENTER pins. NONE of the other 6 pins are used. Though I am not in the UK, from what I know you don't use the two center pins for a single line connection, so you will need to fashion some sort of adapter to connect. Frankly, using the two center pins ( A Bell System brain blizzard) wasn't the smartest idea. It makes the modular plug into, with the addition of just a little moisture, a really good spark gap when a ring signal or small induction of lightning is applied. I have seen many a modular plug turned black and useless since the introduction of modular in the US in the early 70's Good luck John Novack Graham Kiff wrote: I'm a complete Asterisk novice and have an installation based on the [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]CD. I've installed my TDM400P with 2 x FXO 2 x FXS, but every time I try to dial out, I get a message No circuits available. Can someone confirm the pinouts for connecting the FXO's to a UK BT Line - I have RJ11 connectors on the back of my TDM400P card, so ideally I'd like to know the pin mappings from a standard BT plug to RJ11. Cheers Graham ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- Roger Hill 07739 707 180 Perseverance is the hard work you do after you get tired of doing the hard work you already did. ___ --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
