Re: [asterisk-users] Noise on phones while speaking...
Carlos Chavez wrote: The card itself does not have hardware echo cancellation so we use MG2. I am not fixated on the card because this should not affect a SIP to SIP internal call unless the card is really defective and provides bad timing to Asterisk. Actually when bridging channels Asterisk acts as either a low level packet router (Packet2Packet or Local bridge - RTP packet is read in, minimally modified, and immediately sent back out) or as a higher level media forwarder (RTP packet is read in, dissected some, stuffed into internal data structure, shipped off to other channel, RTP header added, packet sent - although monitoring/recording/transcoding is involved it's in that list of operations too). Timing from an external source isn't used. So really, I'm fairly certain it's something to do with your phones. If you could post a short snippet of a phone calling another and the bridge that occurs I could be more certain. Cheers, -- Joshua Colp Digium, Inc. | Senior Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA Check us out at: www.digium.com www.asterisk.org -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
Carlos, Echo might be a possible cause of the noise but it is strange you hear it also on internal calls since they have very low latency. Can you record a short sample with this noise or at least ask your customer to provide a more detailed description of the noise ? From: Carlos Chavez cur...@telecomabmex.com To: asterisk-users@lists.digium.com Sent: Wednesday, November 14, 2012 12:45 AM Subject: Re: [asterisk-users] Noise on phones while speaking... On 11/13/12 4:31 PM, Mark Engelhardt wrote: Carlos, I think the noise you are hearing might echo cancelation that is broken or set incorrectly. Maybe the card and asterisk are both trying to echo cancel? Mark On Nov 13, 2012, at 1:52 PM, Carlos Chavez wrote: I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. We are using Asterisk .1.8.11-cert8 on a CentOS 6 machine with a Digium AEX800 card and DAHDI 2.6.1. I really do not know how this noise is generated. Where can I look? Why would a SIP to SIP call have this noise? The card itself does not have hardware echo cancellation so we use MG2. I am not fixated on the card because this should not affect a SIP to SIP internal call unless the card is really defective and provides bad timing to Asterisk. -- Telecomunicaciones Abiertas de México S.A. de C.V. Carlos Chávez Prats Director de Tecnología +52-55-91169161 ext 2001 -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
What is your timing reference module show like timing where your timing counts 0 I had strange noises with dadhi 2.5 had to roll back to dahdi 2.4 hth 2012/11/17 Valer Nur valer...@yahoo.com Carlos, Echo might be a possible cause of the noise but it is strange you hear it also on internal calls since they have very low latency. Can you record a short sample with this noise or at least ask your customer to provide a more detailed description of the noise ? -- *From:* Carlos Chavez cur...@telecomabmex.com *To:* asterisk-users@lists.digium.com *Sent:* Wednesday, November 14, 2012 12:45 AM *Subject:* Re: [asterisk-users] Noise on phones while speaking... On 11/13/12 4:31 PM, Mark Engelhardt wrote: Carlos, I think the noise you are hearing might echo cancelation that is broken or set incorrectly. Maybe the card and asterisk are both trying to echo cancel? Mark On Nov 13, 2012, at 1:52 PM, Carlos Chavez wrote: I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. We are using Asterisk .1.8.11-cert8 on a CentOS 6 machine with a Digium AEX800 card and DAHDI 2.6.1. I really do not know how this noise is generated. Where can I look? Why would a SIP to SIP call have this noise? The card itself does not have hardware echo cancellation so we use MG2. I am not fixated on the card because this should not affect a SIP to SIP internal call unless the card is really defective and provides bad timing to Asterisk. -- Telecomunicaciones Abiertas de México S.A. de C.V. Carlos Chávez Prats Director de Tecnología +52-55-91169161 ext 2001 -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Noise on phones while speaking...
I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. We are using Asterisk .1.8.11-cert8 on a CentOS 6 machine with a Digium AEX800 card and DAHDI 2.6.1. I really do not know how this noise is generated. Where can I look? Why would a SIP to SIP call have this noise? -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
On 13/11/12 6:52 pm, Carlos Chavez wrote: Why would a SIP to SIP call have this noise? Check to see what random stuff they have on their desk. We've regularly seen things like mobile phones (or cellphones to those of you across the pond :-) ) causing interference with VoIP phones. We've also of late seen some (especially Iiyama) monitors doing likewise - I suspect they have a fairly noisy 240v-12v transformer inside. Kind regards, Chris -- This email is made from 100% recycled electrons -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
Carlos Chavez cur...@telecomabmex.com writes: I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. If you record the call (with Monitor or Wirehark), does the noise show up on the recording? /Benny -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
Carlos, I think the noise you are hearing might echo cancelation that is broken or set incorrectly. Maybe the card and asterisk are both trying to echo cancel? Mark On Nov 13, 2012, at 1:52 PM, Carlos Chavez wrote: I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. We are using Asterisk .1.8.11-cert8 on a CentOS 6 machine with a Digium AEX800 card and DAHDI 2.6.1. I really do not know how this noise is generated. Where can I look? Why would a SIP to SIP call have this noise? -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Noise on phones while speaking...
On 11/13/12 4:31 PM, Mark Engelhardt wrote: Carlos, I think the noise you are hearing might echo cancelation that is broken or set incorrectly. Maybe the card and asterisk are both trying to echo cancel? Mark On Nov 13, 2012, at 1:52 PM, Carlos Chavez wrote: I have a new install and the customer is complaining that they hear noise on all calls, no matter if it is internal or external, desk phones or softphones. The noise is only present when the user is speaking, not the remote side. The remote side does not hear the noise, only the local user. We are using Asterisk .1.8.11-cert8 on a CentOS 6 machine with a Digium AEX800 card and DAHDI 2.6.1. I really do not know how this noise is generated. Where can I look? Why would a SIP to SIP call have this noise? The card itself does not have hardware echo cancellation so we use MG2. I am not fixated on the card because this should not affect a SIP to SIP internal call unless the card is really defective and provides bad timing to Asterisk. -- Telecomunicaciones Abiertas de México S.A. de C.V. Carlos Chávez Prats Director de Tecnología +52-55-91169161 ext 2001 -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
