I have a TDM400 with an FXS and FXO interface. I have adjusted the TX
and RX gain for both the FXS and FXO channels so that everything is
balanced.
I hear myself very loudly with no lag. I also get alot of background
noise when the bridge is formed between the FXS and FXO channels. I
have read the following articles:
http://www.voip-info.org/wiki/view/Asterisk+echo+cancellation
http://www.voip-info.org/wiki/view/Causes+of+Echo
I have read these multiple times. My system is now useable, but it's
definitely worse than when I plug the phone directly into the wall.
My loadzone is 'us'.
I have the following in my zapata.conf
usecallerid=yes
transfer=yes
channel => 1
context=outbound
mailbox=00
channel => 2
echocancel=yes
echocancelwhenbridged=yes
context=inbound
signalling=fxs_ks
faxdetect=incoming
busydetect=yes
busycount=5
rxgain=5.2
txgain=-0.5
channel => 3
Is there anything I'm missing? I assume there is because it's not
working as well as I had hoped. Any suggestions of what to try next,
what to look for, or what additional documentation I should be reading
would be much appreciated.
Shaun
--
Visit my blog at http://hackerlog.blogspot.com
====================================================If more of us valued food
and cheer and song above hoarded gold, it would
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Hi Shaun, I'm new at this but I do have some queries on your setup. You have two interfaces and three channels? And there's only signalling specified for channel 3? If I am not wrong, the channel inherits all the settings from before it. Mervyn On 11/21/06, Shaun Kruger <shaun.kruger@gmail.com> wrote:> I have a TDM400 with an FXS and FXO interface. I have adjusted the TX > and RX gain for both the FXS and FXO channels so that everything is > balanced. > > I hear myself very loudly with no lag. I also get alot of background > noise when the bridge is formed between the FXS and FXO channels. I > have read the following articles: > http://www.voip-info.org/wiki/view/Asterisk+echo+cancellation > http://www.voip-info.org/wiki/view/Causes+of+Echo > > I have read these multiple times. My system is now useable, but it's > definitely worse than when I plug the phone directly into the wall. > > My loadzone is 'us'. > I have the following in my zapata.conf > usecallerid=yes > transfer=yes > > channel => 1 > context=outbound > mailbox=00 > channel => 2 > > echocancel=yes > echocancelwhenbridged=yes > context=inbound > signalling=fxs_ks > faxdetect=incoming > busydetect=yes > busycount=5 > rxgain=5.2 > txgain=-0.5 > channel => 3 > > Is there anything I'm missing? I assume there is because it's not > working as well as I had hoped. Any suggestions of what to try next, > what to look for, or what additional documentation I should be reading > would be much appreciated. > > Shaun > > -- > Visit my blog at http://hackerlog.blogspot.com > ====================================================> If more of us valued food and cheer and song above hoarded gold, it would > be a merrier world. > -- J.R.R. Tolkien > _______________________________________________ > --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 >
On Mon, Nov 20, 2006 at 06:09:19PM -0700, Shaun Kruger wrote:> I have a TDM400 with an FXS and FXO interface. I have adjusted the TX > and RX gain for both the FXS and FXO channels so that everything is > balanced.gain tuning should be the last resort. Before that: 1. Make sure you have the proper value for opermode (if this is the US, the defalt, FCC, is probably OK). 2. Use fxotune to further adjust the FXO modules. 3. Make sure you actually use an echo canceller.> > I hear myself very loudly with no lag. I also get alot of background > noise when the bridge is formed between the FXS and FXO channels. I > have read the following articles: > http://www.voip-info.org/wiki/view/Asterisk+echo+cancellation > http://www.voip-info.org/wiki/view/Causes+of+Echo > > I have read these multiple times. My system is now useable, but it's > definitely worse than when I plug the phone directly into the wall. > > My loadzone is 'us'. > I have the following in my zapata.conf > usecallerid=yes > transfer=yessiganlling = ???> > channel => 1 > context=outbound > mailbox=00 > channel => 2You don't cancel echo on the FXS(?) modules? Why not? Echo should be cancelled as close as possible to the source: this will make it the most effective. What happens when you call from an FXS port to a VoIP phone?> > echocancel=yes > echocancelwhenbridged=yes > context=inbound > signalling=fxs_ks > faxdetect=incoming > busydetect=yesYou use KewlStart and still have to reort to busydetect?> busycount=5 > rxgain=5.2 > txgain=-0.5 > channel => 3 > > Is there anything I'm missing? I assume there is because it's not > working as well as I had hoped. Any suggestions of what to try next, > what to look for, or what additional documentation I should be reading > would be much appreciated. > > Shaun[1] Actually: once you run 'reload', you will. Confused? http://bugs.digium.com/view.php?id=7877 -- Tzafrir Cohen icq#16849755 jabber:tzafrir@jabber.org +972-50-7952406 mailto:tzafrir.cohen@xorcom.com http://www.xorcom.com iax:guest@local.xorcom.com/tzafrir