Displaying 20 results from an estimated 6000 matches similar to: "Echo Training Question From a Newbie"
2005 Mar 09
2
Echo for first 15 to 20 seconds
I am using asterisk with a handful of DM04B cards. Everything seems fine except for an echo on all calls on the local end of the call. In almost all cases the echo goes away after 15 to 20 seconds. I am attributing the echo going away to the echo cancellation code that was enabled when the following options are set:
echocancel=yes ;
echocancelwhenbridged=yes
echotraining=yes ;
Is there anyway
2006 May 29
3
TDM2400P with echo canceller not working
Hi,
I have a box with Debian Sarge, Asterisk 1.2.1 (and zaptel 1.2.1) and a
TDM2400P with echo canceller. I installed the card but no echo
cancellation is being made...seems like the echo canceller module does
not work, infact the software cancellation is working.
My zapata.conf has echocancel = 128 and echocancelwhenbridged = yes but
no echotraining parameter which gives a warning.
I found
2007 Mar 15
2
Help! Echo problem even at T1 PRI?
Hello,
We have an asterisk setup at our client's site using a TE205P. The line to
telco is a 23 channels T1 PRI, however the line has random echo problems
(about 5-10% of the calls)!
Can anybody tell me if echo cancellation is really needed even at a T1 PRI
to the telco? Because people keep saying when they deploy voip solution in
Hong Kong using T1 PRI, there is no need of echo cancellation.
2009 Sep 02
4
More Echo
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<span class="postbody">Greetings,<br>
I am running Asterisk 1.4.25 with Dahdi Complete
2.2.0, on a Digium TE121B PCI express card with a </span>VPMADT032<span
2004 Jan 26
3
Questions regarding new echo cancellation features...
I notice the zaptel Makefile option
the mark2 option & KFLAGS+=-DAGGRESSIVE_SUPPRESSOR
is now gone. Does simply adding these options still compile in a certain
echo can - or is there an other method of activating a particular can. I
have not had to update my machine that is connected to pstn for a while & I
don't want to jump into echotraining without a way to quickly enable what
has
2011 May 12
1
Disabling echo cancellation by software
Dear, I have Asterisk 1.6 with an E1 Digium card with echo
cancellation module. So I need to use just the echo cancellation by
hardware and disable the echo cancellation by software. I use DAHDI
for my telephony hardware.
If the lines involved with echo cancel are:
In /etc/dahdi/system.conf:
echocanceller=mg2,1-15,17-31
In /etc/asterisk/chan_dahdi.conf:
echocancel=yes
echocancelwhenbridged=no
2005 Aug 31
4
One way echo canceling?
Hey everybody,
I have a situation where we have 2 Asterisk (CVS as of 08/25/2005)
connected via IAX. On the corporate side, we have 1 TE110P connecting
to a Definity G3R and it's connecting to a TN464F card, giving a 23
channel connection. I have echocancel=yes, echotraining=yes and
echocancelwhenbridged=yes.
One the remote office side, they a Adit 600 channel bank for 10 outside
2004 Jun 30
4
Echo cancellation, when software doesn't cut it. Whats next?
Over the last couple weeks I've tried everything I could get my hands on
in an attempt to get rid of my echo problems. Using a CVS checkout of
just yesterday, I've tried every echo cancellation routine in zconfig.h
(including Mark2 w/Aggressive) , as well as the echotraining=800
mentioned on this list just last week.
While some things worked better then others, I would consider none
2006 Jun 08
7
Fun with Echo
I've spent the last week or so troubleshooting echo problems at my
Wife's business, and I've been able to clear up about 99% of the
echo, but there is still a little residual echo that I can't seem to
"tweak out". The users describe it as "buzzing or crackling", but
what it sounds like to me is a slight echo, but just of one syllable
of the word.
2006 Jan 12
2
SIP phones unbeatable echo
Hey all again, I'm wrestling with echo problems on our sip extensions. I've
set these items in zapata.conf but tweaking these values doesn't seem to
make much difference
echocancel=yes
echocancelwhenbridged=yes
echotraining=2500
rxgain=8.0
txgain=1.0
are there other settings that can help me tame this beast? Been searching
but not turning up anything that'll work here.
Thanks
2005 Jan 27
1
Bad ECHO problem after upgrade to HEAD version
I installed the HEAD version of Asterisk on January 24 and ever since then I have a really bad echo problem.
I have tried to go back to the stable version, but it won't install.
Anyone else having this trouble? Suggestions?
Thanks,
Brian
Here are what I believe to be the pertinent details of ZAPATA.CONF.
[channels]
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=0.0
2004 Apr 28
4
Best echo-free and trouble-free system?
We currently have a 15-phone system using Asterisk, a combination of
analog phones/Grandstream HandyTone-286 and Grandstream BT101s, and 4
X100Ps connected to analog lines. The system works well except for
the occasional echo problem. I have all the echo parameters
configured, removed all the extra incoming analog lines except to the
PBX, etc. following all the advice on the wiki and on the
2008 Mar 27
3
Star Wars Echo Sound
We have a location that is having a really odd issue. We have a sangoma
POTs card. We are running software echo cancellation with the card
(through asterisk) to try to eliminate some major echoing problems. I've
turned on both EC and echotrain, which seemed to have gotten rid of the
echo for the most part. However, we are now running into an issue where
the outside caller hears a star wars
2004 Jul 26
4
Echo in asterisk phones.
Hi all.
We have just setup and asterisk with a 4 line zaptel board with Cisco
7960 and BudgeTone-100 IP phones. All works fine except for this
nagging echo. Whenever I talk, I hear my voice echo back.. This only
happens whenever I talk on an actual phone call. Whenever I talk to
another extension, no problems. I would appreciate any help. I have
searched the google lists and have not found any
2005 May 26
4
YET Another echo issue PRI CARD Any help accepted :-)
Good Day all,
I have a Fractional PRI connected to my Asterisk Box via a T100P
card.
When I initiate a call out to phone number 123-8888 the call
sounds great no echo what so ever.
If the person at 123-8888 hangs up and calls me right back (same
handset on both sides) same trunk line
The call always has echo on it. The Asterisk sip extension
hears them selves echoing. The remote party
2004 Dec 13
2
Echo on one E1 line, but not the other
We're rolling out Cisco 7940 phones, linked to *, which is running a TE405p
EuroISDN.
We have 2 ISDN lines, one we had for testing, and one for general (40+
users) use.
During the testing phase, we had 10 phones linked to the second ISDN line,
and there were no problems with echo at all. Lucky me. However, since we
have started rolling out, we've had quite loud complaints that there is
2005 Sep 30
2
Echo Cancellation not working in Zapata.conf
I have echocancel=yes in zapata.conf but when I do a zap show channel 1,
I notice echo cancellation is turned off.
I followed the article that talks about the order in which the
statements need to be in zapata.conf to get echo canceling to work:
http://lists.digium.com/pipermail/asterisk-users/2005-June/110615.html
But it is still not working. Does anyone know how to get echo
2006 Mar 31
1
Echo still present with Eicon Diva Server 4 Bri
Hi!
I'm trying to enable echo cancelation with my Eicon Diva Server 4 Bri card.
I've enabled it from zapata.conf, (as I read from www.voip-info.org)
-------------------------------
; Enable echo cancellation
echocancel=64
echocancelwhenbridged=yes
echotraining=2000
----------------------------
but nothing seems to change, echo is still present.
Any idea? Should I enable/change something
2009 Aug 25
2
Echo
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
I recently upgraded my Asterisk system to Dahdi and now I have an echo
<br>
problem.
<br>
<br>
I am running Asterisk 1.4.25 with Dahdi Complete 2.2.0, on a Digium
<br>
TE121B PCI express
2004 Oct 04
3
echo cancellation: the never-ending quest for truth
Asterisk apparently has five echo cancellation algorithms: STEVE, STEVE2,
MARK, MARK2 and MARK3. The current default appears to be MARK2.
My question is, has anyone had any experience with any of the others
(other than MARK2), and is there some conventional wisdom as to when to
use one over another?
TIA
Bruce Komito
High Sierra Networks, Inc.
www.servers-r-us.com
(775) 236-5815