[Asterisk-Users] troubleshooting echo on speakerphone

[James Harper]

I've not used it with VoIP, but we have a speakerphone which we have
used on occasion in a meeting where someone was unable to attend.

When it is turned on, it sends out a 'ping' and measures the echo
response of the room, and perfectly cancels out all of the echo
thereafter, unless it is moved. If it is moved then the echo becomes
horrible.

A cheaper unit might not do echo cancellation quite as well.

James

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of T. Shaw
> Sent: Saturday, 24 June 2006 03:48
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] troubleshooting echo on speakerphone
> 
> Hello all,
> I'm looking to troubleshoot some echo issues and possibly "studdering"
> while
> using the speakerphone with the Intellitouch ITC3002. On the hardware
end,
> i
> have a 2621 setup as the router with some policy maps for qos, and a
> 2900XL
> with cos priority set to 5. I have setup created 2 vlans currently
(really
> small office), 1 for corp/data, and 2 voice vlan. Asterisk is on the
2nd
> vlan as well as the phones and i have the 2621 doing intervlan
routing.
> 
> Currently we have VOIP calls coming in and out, but when calls are
placed
> and speakerphone is utilized, the FAR end hears echo of themselves.
This
> would happen regardless of who placed the call.
> 
> Any ideas on where i can start cutting down the echo problem?
> The phones come with echo-cancellation and is turned on. Thephones
also
> have
> VAD but is currently not on. Would this make a difference while
utilizing
> the speakerphone?
> 
> Terrelle
> 
> 
> _______________________________________________
> --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