Dear All, How can we know the On board supports echo cancellation I have *Digium, Inc. Wildcard TE410P quad-span T1/E1/J1 card 3.3V (rev 02)*board all working fine but sometimes i got echo when user are calling a PRI. is there any way to know on board echo cancellation . regards Dhaval -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20100302/96876c54/attachment.htm
----- "DHAVAL INDRODIYA" <dhaval.it01034 at gmail.com> escreveu:> Dear All, > > How can we know the On board supports echo cancellation > > I have Digium, Inc. Wildcard TE410P quad-span T1/E1/J1 card 3.3V (rev > 02) board > > all working fine but sometimes i got echo when user are calling a PRI. > > is there any way to know on board echo cancellation . > > > regards > > DhavalDo you have an echo cancelling module attached to that board? If so, all you need is to set echocancel=yes and echocancelwhenbridged=no on your chan_dahdi.conf. If you don't... well you should! Anyway, you can turn on the echocancelling via software with echocancel=256. I strongly recommend using OSLEC in that case. You'll need to patch your DAHDI in order to use it, but it's totally worth it.
----- "Brian" <brel.astersik100129 at copperproductions.co.uk> escreveu:> On Tue, 2010-03-02 at 09:22 -0300, Vin?cius Fontes wrote: > > ----- "DHAVAL INDRODIYA" <dhaval.it01034 at gmail.com> escreveu: > > > > > Dear All, > > > > > > How can we know the On board supports echo cancellation > > > > > > I have Digium, Inc. Wildcard TE410P quad-span T1/E1/J1 card 3.3V > (rev > > > 02) board > > > > > > all working fine but sometimes i got echo when user are calling a > PRI. > > > > > > is there any way to know on board echo cancellation . > > > > > > > > > regards > > > > > > Dhaval > > > > Do you have an echo cancelling module attached to that board? If so, > all you need is to set echocancel=yes and echocancelwhenbridged=no on > your chan_dahdi.conf. If you don't... well you should! > > > > Anyway, you can turn on the echocancelling via software with > echocancel=256. I strongly recommend using OSLEC in that case. You'll > need to patch your DAHDI in order to use it, but it's totally worth > it. > > > On the subject of DAHDI -v- OSLEC. > > I never had any luck getting it to work with DAHDI 2.2.1 despite > following: > > http://www.rowetel.com/ucasterisk/oslec.html#install_dahdi > > All I ever go was a bad case of the blues :-( > > make[3]: *** No rule to make target > `/usr/src/dahdi/linux/drivers/dahdi/echo.c', needed by > `/usr/src/dahdi/linux/drivers/dahdi/echo.o'. > > I guess I missed something somewhere??? >Get the most recent version of Linux 2.6 kernel. Inside you'll find a directory named staging/echo. Copy that entire directory to the drivers/linux directory of the DAHDI sources. In the end you gotta have a directory named linux/drivers/staging/echo inside your DAHDI sources.
On Tue, 2010-03-02 at 15:44 +0530, DHAVAL INDRODIYA wrote:> Dear All, > > How can we know the On board supports echo cancellation > > I have Digium, Inc. Wildcard TE410P quad-span T1/E1/J1 card 3.3V (rev > 02) board > > all working fine but sometimes i got echo when user are calling a PRI. > > is there any way to know on board echo cancellation . > >Check "dmesg" on your system for messages like: VPM400: Support Enabled/Disabled VPM450: Support Enabled/Disabled That should tell you if the hardware echo cancellation is working or not. The TE410P does not have hardware echo cancellation the model was TE411P. If you can open the server you should be able to see if the card has a daughter board installed which is the echo module.> regards > > Dhaval > -- > _____________________________________________________________________ > -- 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-- Telecomunicaciones Abiertas de M?xico S.A. de C.V. Carlos Ch?vez Prats Director de Tecnolog?a +52-55-91169161 ext 2001 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20100302/d62033cc/attachment.pgp
Hi, Carlos I checked dmesg on my server and i found following message what is meaning for this ? i cant understand VPM400: Not Present VPM450: echo cancellation for 128 channels VPM450: hardware DTMF disabled. VPM450: Present and operational servicing 4 span(s) regards Dhaval On Tue, Mar 2, 2010 at 10:25 PM, Carlos Chavez <cursor at telecomabmex.com>wrote:> On Tue, 2010-03-02 at 15:44 +0530, DHAVAL INDRODIYA wrote: > > Dear All, > > > > How can we know the On board supports echo cancellation > > > > I have Digium, Inc. Wildcard TE410P quad-span T1/E1/J1 card 3.3V (rev > > 02) board > > > > all working fine but sometimes i got echo when user are calling a PRI. > > > > is there any way to know on board echo cancellation . > > > > > Check "dmesg" on your system for messages like: > > VPM400: Support Enabled/Disabled > VPM450: Support Enabled/Disabled > > That should tell you if the hardware echo cancellation is working or > not. The TE410P does not have hardware echo cancellation the model was > TE411P. If you can open the server you should be able to see if the > card has a daughter board installed which is the echo module. > > > regards > > > > Dhaval > > -- > > _____________________________________________________________________ > > -- 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 > > -- > 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/20100303/9b037386/attachment.htm
----- "DHAVAL INDRODIYA" <dhaval.it01034 at gmail.com> escreveu:> Hi, > > Carlos > > I checked dmesg on my server and i found following message > > what is meaning for this ? i cant understand > > VPM400: Not Present > VPM450: echo cancellation for 128 channels > VPM450: hardware DTMF disabled. > VPM450: Present and operational servicing 4 span(s) > > regards > DhavalThat means you have a VPM450 echo cancelling module attached to your digital board. All you need to do in order to activate echo cancelling is setting echocancel=yes on your chan_dahdi.conf. After that you can check if the echo canceller is really enabled by triggering a "dahdi show channel X" on the Asterisk CLI. X should be a channel that's currently on a call. Here's an example: stara*CLI> dahdi show channel 64 Channel: 64 File Descriptor: 77 Span: 3LI> Extension: Dialing: no Context: pabx Caller ID: Calling TON: 0 Caller ID name: Destroy: 0 InAlarm: 0 Signalling Type: ISDN PRI Radio: 0I> Owner: DAHDI/64-1 Real: DAHDI/64-1 Callwait: <None> Threeway: <None> Confno: -1 Propagated Conference: -1 Real in conference: 0 DSP: yes Relax DTMF: no Dialing/CallwaitCAS: 0/0 Default law: alaw Fax Handled: no Pulse phone: no Echo Cancellation: 128 taps unless TDM bridged, currently ON PRI Flags: Call PRI Logical Span: Implicit Actual Confinfo: Num/0, Mode/0x0000 Actual Confmute: No Hookstate (FXS only): Onhook Of course, the interesting line to you is the "Echo Cancellation" one.
On Wed, 2010-03-03 at 10:14 +0530, DHAVAL INDRODIYA wrote:> Hi, > > Carlos > > I checked dmesg on my server and i found following message > > what is meaning for this ? i cant understand > > VPM400: Not Present > VPM450: echo cancellation for 128 channels > VPM450: hardware DTMF disabled. > VPM450: Present and operational servicing 4 span(s) >Well, that means that your card does have the echo cancellation module installed and it is active. Please post your DAHDI configuration to make sure your channels are properly configured. You should not have echo on any channel but remember that the E1 is not the only source of echo for calls. -- Telecomunicaciones Abiertas de M?xico S.A. de C.V. Carlos Ch?vez Prats Director de Tecnolog?a +52-55-91169161 ext 2001 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20100303/4136aeef/attachment.pgp