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?
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
Carlos Chavez <cursor at 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
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
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 M?xico S.A. de C.V. Carlos Ch?vez Prats Director de Tecnolog?a +52-55-91169161 ext 2001
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 <cursor at telecomabmex.com> To: asterisk-users at 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 M?xico S.A. de C.V. Carlos Ch?vez Prats Director de Tecnolog?a +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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20121117/b0311138/attachment.htm>
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 <valernur at 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 <cursor at telecomabmex.com> > *To:* asterisk-users at 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 M?xico S.A. de C.V. > Carlos Ch?vez Prats > Director de Tecnolog?a > +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 >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20121117/68e45eb0/attachment.htm>