...@lists.digium.com] On Behalf Of Valer Nur
Sent: Wednesday, August 27, 2014 6:16 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Echo Cancellation on VoIP networks
If the clients are not doing the echo cancellation properly, you can always use
a centralized echo
On VoIP echo cancellation is basically: hope that the client is doing AND
is doing it well.
In the best case each client uses a knowledge about his hardware
(microphone, speaker, distance etc.).
---
Dennis Guse
On Tue, Aug 26, 2014 at 1:30 PM, Emiliano Vazquez emilianovazq...@gmail.com
If the clients are not doing the echo cancellation properly, you can always use
a centralized echo cancellation software for VoIP networks.
On Wednesday, August 27, 2014 5:25 PM, Dennis Guse
dennis.g...@alumni.tu-berlin.de wrote:
On VoIP echo cancellation is basically: hope that the
Hello,
I'm new to Echo Cancellation and I was wondering how it is handled/works on
pure VoIP networks using Asterisk?
I did some research on the internet about EC on VoIP networks, but I can't
really put a grasp on it.
We currently have some Echo Cancellation chips on our Digium cards, but are
El 26/08/14 a las 05:33, Grant Bagdasarian escibió:
I’m new to Echo Cancellation and I was wondering how it is
handled/works on pure VoIP networks using Asterisk?
there is no echo problems on pure VoIP networks.
echo is a common problem when you have changes from analog to digital.
The only
Hi,
I am using Twinkle to call mobile phone but there is too much noise on the
mobile user's end. Mobile user's voice is echoed back to user. While on
twinkle end everything is fine.
Using Asterisk 11.
Please suggest some way to mitigate the problem.
Thanks.
--
Anurag Rana
Put line side echo cancelation chip on ur PRI card.
On 25-Jun-2014 10:35 PM, Anurag Rana anuragrana31...@gmail.com wrote:
Hi,
I am using Twinkle to call mobile phone but there is too much noise on the
mobile user's end. Mobile user's voice is echoed back to user. While on
twinkle end
Is there any Software solution?
On Wed, Jun 25, 2014 at 11:38 PM, Mitul Limbani mi...@enterux.in wrote:
Put line side echo cancelation chip on ur PRI card.
On 25-Jun-2014 10:35 PM, Anurag Rana anuragrana31...@gmail.com wrote:
Hi,
I am using Twinkle to call mobile phone but there is too
-Commercial Discussion
Subject: Re: [asterisk-users] Echo Cancellation when calling from softphone to
mobile.
Is there any Software solution?
On Wed, Jun 25, 2014 at 11:38 PM, Mitul Limbani
mi...@enterux.inmailto:mi...@enterux.in wrote:
Put line side echo cancelation chip on ur PRI card.
On 25
Shaun Ruffell sruffell at digium.com writes:
On Thu, Jul 25, 2013 at 02:51:02AM -0700, bilal ghayyad wrote:
Hello;
If our Digium Telephony Card does not support echo cancellation
like (1TDM410PLF or 1AEX410PLF), what is the best and simple way
to overcome the echo?
Regards
On Tue, Aug 20, 2013 at 3:01 PM, Ghanshyam btcs.em...@gmail.com wrote:
Shaun Ruffell sruffell at digium.com writes:
On Thu, Jul 25, 2013 at 02:51:02AM -0700, bilal ghayyad wrote:
Hello;
If our Digium Telephony Card does not support echo cancellation
like (1TDM410PLF or
, 2013 3:42 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Echo Cancellation
Unlike our friend Ghanshyam, i'm sorry for the hijack however does OSLEC only
work with telephony cards or, will it also work on a purely Asterisk SIP
environment
Thanks Eric, I breezed through the documentation and got the
impression that this was the case. Good luck on getting rid of that
echo Bilal!
N.
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New to
25.07.2013 13:51, bilal ghayyad пишет:
Hello;
If our Digium Telephony Card does not support echo cancellation like
(1TDM410PLF or 1AEX410PLF), what is the best and simple way to
overcome the echo?
oslec, imho.
--
_
--
On 07/25/2013 11:51 AM, bilal ghayyad wrote:
Hello;
If our Digium Telephony Card does not support echo cancellation like
(1TDM410PLF or 1AEX410PLF), what is the best and simple way to overcome
the echo?
Use the free OSLEC echo canceller software module or Digium's commercial
HPEC echo
Hello;
If our Digium Telephony Card does not support echo cancellation like
(1TDM410PLF or 1AEX410PLF), what is the best and simple way to overcome the
echo?
Regards
Bilal
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On 7/25/2013 5:57 AM, Patrick Lists wrote:
On 07/25/2013 11:51 AM, bilal ghayyad wrote:
Hello;
If our Digium Telephony Card does not support echo cancellation like
(1TDM410PLF or 1AEX410PLF), what is the best and simple way to overcome
the echo?
Use the free OSLEC echo canceller software
On Thu, Jul 25, 2013 at 02:51:02AM -0700, bilal ghayyad wrote:
Hello;
If our Digium Telephony Card does not support echo cancellation
like (1TDM410PLF or 1AEX410PLF), what is the best and simple way
to overcome the echo?
Regards
Bilal
Also, just FYI, those cards do support adding a
Well, I downgraded this box to Asterisk 1.4.38 and all is well again. Echo
cancellation works properly, no problems, no errors.
I have to assume this is a bug in Asterisk 1.8.x or Wanpipe 3.5.18.
--Tim
- Original Message -
Greetings folks-
I'm experiencing issues with a freshly
Trying again... I think this got lost in the mailing list interruptions during
the last day or two...
- Forwarded Message -
From: Tim Nelson tnel...@fudnet.net
To: asterisk-users@lists.digium.com
Sent: Wednesday, December 15, 2010 5:07:20 PM
Subject: [asterisk-users] Echo Cancellation
Greetings folks-
I'm experiencing issues with a freshly installed box. When a call comes in via
PRI (Sangoma AFT-A104), I see this in my logs:
[Dec 15 14:26:10] WARNING[23546] chan_dahdi.c: Unable to enable echo
cancellation on channel 12 (Invalid argument)
[Dec 15 14:26:10] WARNING[23546]
- DHAVAL INDRODIYA dhaval.it01...@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:
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:
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
--
- DHAVAL INDRODIYA dhaval.it01...@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
On Tue, 2010-03-02 at 09:22 -0300, Vinícius Fontes wrote:
- DHAVAL INDRODIYA dhaval.it01...@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
- Brian brel.astersik100...@copperproductions.co.uk escreveu:
On Tue, 2010-03-02 at 09:22 -0300, Vinícius Fontes wrote:
- DHAVAL INDRODIYA dhaval.it01...@gmail.com escreveu:
Dear All,
How can we know the On board supports echo cancellation
I have Digium, Inc. Wildcard
On Tue, 2010-03-02 at 12:45 -0300, Vinícius Fontes wrote:
- Brian brel.astersik100...@copperproductions.co.uk escreveu:
On Tue, 2010-03-02 at 09:22 -0300, Vinícius Fontes wrote:
- DHAVAL INDRODIYA dhaval.it01...@gmail.com escreveu:
Dear All,
How can we know the On
On Tue, 2 Mar 2010, Brian wrote:
It would be nice to resolve this - but it's probably beyond my
understanding and ability.
Did you un-comment the 2 lines in Kbuild in the ...linux/drivers/dahdi
directory?
Gordon
--
_
--
On Tue, 2010-03-02 at 15:59 +, Brian wrote:
On Tue, 2010-03-02 at 12:45 -0300, Vinícius Fontes wrote:
- Brian brel.astersik100...@copperproductions.co.uk escreveu:
On Tue, 2010-03-02 at 09:22 -0300, Vinícius Fontes wrote:
- DHAVAL INDRODIYA dhaval.it01...@gmail.com
On Tue, 2010-03-02 at 16:27 +, Gordon Henderson wrote:
On Tue, 2 Mar 2010, Brian wrote:
It would be nice to resolve this - but it's probably beyond my
understanding and ability.
Did you un-comment the 2 lines in Kbuild in the ...linux/drivers/dahdi
directory?
Gordon
Ah Gordon!
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
On Tue, 2010-03-02 at 16:49 +, Brian wrote:
On Tue, 2010-03-02 at 16:27 +, Gordon Henderson wrote:
On Tue, 2 Mar 2010, Brian wrote:
It would be nice to resolve this - but it's probably beyond my
understanding and ability.
Did you un-comment the 2 lines in Kbuild in the
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,
Hello all,
I have a Linksys spa3102 with one FXS and one FXO port.
The problem is that I have a lot of echo when using the fxo port, the sound
is of very low quality.
So, since I am passing from a FXO port to a SIP channel I ask:
is there any Sip echo canceler software for
Problem solved. :)
I was adding to the pstn line a gain of 6 DB for both sides.
It has to be less than zero. After that the echo almost disappeared.
2010/1/21 Alexandre Rodrigues alex...@gmail.com
Hello all,
I have a Linksys spa3102 with one FXS and one FXO port.
The problem is that I
hey , all
i have one issue on incoming DAHDI PRI
it works fine many times but sometimes it creates bad audio and also having
echo in line
also recording going to be disturbed by this
i cannot understand this properly
can any one have solutions and how to improve this also how to monitor lines
Dear,
the sip phones that registered, in to the asterisk 1.4.x have the echo in their
callings to pstn.
how this echo can be canceled?
Best
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Pezhman Lali wrote:
Dear,
the sip phones that registered, in to the asterisk 1.4.x have the echo
in their callings to pstn.
how this echo can be canceled?
H - you don't give much to go on...
What is the connection to the PSTN (i.e. what kind of card, interface
etc...)
The echo is
any telephone cards on our servers(SER and Asterisk) , all of calls
are come from or going out , on internet connections
--- On Thu, 11/20/08, Alan Lord [EMAIL PROTECTED] wrote:
From: Alan Lord [EMAIL PROTECTED]
Subject: Re: [asterisk-users] echo cancellation for sip phones
To: asterisk-users
I am having problems with echo cancel using dahdi and latest (as of
Saturday) version of asterisk 1.4.
The problem only occurs between zap and sip or iax. The far end gets
an echo. I can even get it by calling my own analog phone hooked up
to an ata! Zap to Zap is just fine.
Here is my
Hi,
I'd like to try using a good quality microphone and a set of PC speakers
(in the first instance) to create a powerful speakerphone; if I get that
working, I'll probably try more elaborate audio equipment.
For this to work, I'll need software acoustic echo cancellation, or the
caller at
Nikhil Nair wrote:
I gather Asterisk can do very good software echo cancellation, but I can
see no reference to using it with chan_console (using the Alsa driver).
Am I overlooking something obvious, or is that really not implemented?
IIRC, echo cancellation is fully in zaptel. If your
Nikhil Nair wrote:
In addition, I've tried using 'dial' from the Asterisk console while a
call from the console is already established, hoping that this would send
DTMF signals. So far those signals haven't been received at the other
end, while I've had no trouble sending DTMF from a
In my other response to this topic I mentioned chan_mobile, I could have
meant chan_bluetooth.
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Nikhil Nair wrote:
Hi,
I'd like to try using a good quality microphone and a set of PC speakers
(in the first instance) to create a powerful speakerphone; if I get that
working, I'll probably try more elaborate audio equipment.
Interesting... After playing with - and being very
Hi Alan,
Thanks for these helpful comments.
I had a look at David Rowe's site, and found it very interesting - I'm
blind myself, and the Louder router project he's working on sounds like a
wonderful idea.
It looks like I got my wires crossed, to some extent - I hadn't realised
that all the
http://www.voip-info.org/wiki/view/Causes+of+Echo
Rob Townley wrote:
Please tell me what hybrid echo is? Where does it come from? Does
it have something to do with analog vs T1 trunk lines?
On 4/23/07, William Moore [EMAIL PROTECTED] wrote:
On 4/23/07, Patrick Fortin [EMAIL PROTECTED]
Hi
Are echo cancellation parameters useful when using the ztdummy driver and
no physical card ?
Thanks
Patrick
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On 4/23/07, Patrick Fortin [EMAIL PROTECTED] wrote:
Are echo cancellation parameters useful when using the ztdummy driver and
no physical card ?
No. The echocan software and hardware only cancel hybrid echo. They
do not cancel acoustic echo that would be generated by voip phones
with bad
Please tell me what hybrid echo is? Where does it come from? Does
it have something to do with analog vs T1 trunk lines?
On 4/23/07, William Moore [EMAIL PROTECTED] wrote:
On 4/23/07, Patrick Fortin [EMAIL PROTECTED] wrote:
Are echo cancellation parameters useful when using the ztdummy
Hi,
i am from Germany, so excuse my School English.
I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update
of Asterisk 2 wooks ago, Echos accure in my SIP Calls.
I use SNOM 360, sometimes there is no echo (for example if i call myself
via
On Thu, 2006-10-26 at 12:18 +0200, Stefan Agethen wrote:
Hi,
i am from Germany, so excuse my School English.
I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update
of Asterisk 2 wooks ago, Echos accure in my SIP Calls.
I use SNOM 360, sometimes there is no echo (for
On Thu, Oct 26, 2006 at 12:18:20PM +0200, Stefan Agethen wrote:
Hi,
i am from Germany, so excuse my School English.
I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update
of Asterisk 2 wooks ago, Echos accure in my SIP Calls.
I use SNOM 360, sometimes there is no echo
I use SNOM 360, sometimes there is no echo (for example if i call myself
via SIP-Asterisk-SIPProvider-TELEKOM-ISDN)
but if i call other people there occures Echo many times. The Routing is
always the same :
SIP (SNOM) - Asterisk - VoIPProvider - ISDN/POTS
Can i control the
Hi,
i am from Germany, so excuse my School English.
I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update
of Asterisk 2 wooks ago, Echos accure in my SIP Calls.
I use SNOM 360, sometimes there is no echo (for example if i call myself
via
Dear List,Has anybody done any tests on sip hardphones quantitatively measuring the MOS and TELR value. I am doing some type approval testing and one of the requirements is that the measured echo is = -25dB with a MOS value of
3.5. I dont know whether this -25dB value is fictitious or
When the call is then transferred by an operator to an internal extension
the receiver of the call finds that they get a lot of echo, for the entire
duration of the call. It seems that echo training isn't working, or the
canceller is disabled somehow after the call is transferred by the operator.
General question.
If you install a Digium card in an Asterisk system, and install zaptel drivers,
do this give any benefit of echo cancellation? Our PSTN gateway is a separate
Audiocodes box, so the zaptel card wouldn't actually be connected to anything.
I'm wondering though doing this would
Hi,
Douglas Garstang wrote:
If you install a Digium card in an Asterisk system, and install
zaptel drivers, do this give any benefit of echo cancellation? Our
PSTN gateway is a separate Audiocodes box, so the zaptel card
wouldn't actually be connected to anything. I'm wondering though
doing
Douglas Garstang a écrit :
General question.
If you install a Digium card in an Asterisk system, and install zaptel drivers,
do this give any benefit of echo cancellation? Our PSTN gateway is a separate
Audiocodes box, so the zaptel card wouldn't actually be connected to anything.
I'm
Douglas Garstang wrote:
General question.
If you install a Digium card in an Asterisk system, and install zaptel drivers,
do this give any benefit of echo cancellation? Our PSTN gateway is a separate
Audiocodes box, so the zaptel card wouldn't actually be connected to anything.
I'm wondering
-Original Message-
From: Jean-Michel Hiver [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 28, 2006 4:27 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Echo Cancellation
Douglas Garstang a écrit :
General question.
If you
a) No it won't unless you connect it to a TDM circuit
b) I have an audiocodes too (mediant 2000 4E1), and I've
found the echo
cancellation to be superb. I'm surprised to see you're having issues!
Me too, given we're on fiber gigabit ethernet, with only a few test calls in
progress!
Avi Miller ha scritto:
Giuseppe wrote:
Can anybody tell me if there is some error or something missing in
this configuration please?
I have the same card in a few of my servers and the echo canceller
works just fine. I'm not 100% sure, but something does jump out at me:
Mar 31 16:40:21
Hi!
I'm here again with echo canceller problem... :-(
I think I've done everything to enable echo canceller feature, but it
still doesn't work...
Can anybody tell me if there is some error or something missing in this
configuration please?
I'm using Eicon Diva Server 4Bri.
Giuseppe wrote:
Can anybody tell me if there is some error or something missing in this
configuration please?
I have the same card in a few of my servers and the echo canceller works
just fine. I'm not 100% sure, but something does jump out at me:
== ISDN3: Answering for 'x'
--
BERGERET,
France.
-Message d'origine-
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] De la part de Giordano
Grandis
Envoyé : mardi 28 mars 2006 16:54
À : Asterisk Users Mailing List - Non-Commercial Discussion
Objet : R: [Asterisk-Users] Echo cancellation
Ok, but is there a way to check
marzo 2006 7.50
A: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Oggetto: RE : [Asterisk-Users] Echo cancellation
Hi,
zap show channel 5
To see channel 5 specs, and take a look at Echo Cancellation: 128 taps unless
TDM bridged, currently OFF during calls, you must have ON.
If you
Hi
all,
I'm using bristuff
0.2.0 RC8o with a HFC pci card and on several calls I saw that the echo
cancellation is on OFF
Echo Cancellation: 0
taps, currently OFF (the result of "zap show channel 1-1" for
example)
I cannot control it
and on my zapata i configured it
switchtype =
On 3/28/06, Giordano Grandis [EMAIL PROTECTED] wrote:
Hi all,
I'm using bristuff 0.2.0 RC8o with a HFC pci card and on several calls I saw
that the echo cancellation is on OFF
Echo Cancellation: 0 taps, currently OFF (the result of zap show channel
1-1 for example)
Echo cancelling is
Discussion
Oggetto: Re: [Asterisk-Users] Echo cancellation
On 3/28/06, Giordano Grandis [EMAIL PROTECTED] wrote:
Hi all,
I'm using bristuff 0.2.0 RC8o with a HFC pci card and on several calls
I saw that the echo cancellation is on OFF
Echo Cancellation: 0 taps, currently OFF (the result
-Commercial Discussion
Oggetto: Re: [Asterisk-Users] Echo cancellation
On 3/28/06, Giordano Grandis [EMAIL PROTECTED] wrote:
Hi all,
I'm using bristuff 0.2.0 RC8o with a HFC pci card and on several calls
I saw that the echo cancellation is on OFF
Echo Cancellation: 0 taps, currently
A: Asterisk Users Mailing List - Non-Commercial Discussion
Oggetto: Re: R: [Asterisk-Users] Echo cancellation
Use 'zap show channel ...' on the channel where the call is in progress, and it
should show that EC is enabled.
I assume that you stopped/started Asterisk since you enabled echo cancelling
Steve Davies wrote:
Use 'zap show channel ...' on the channel where the call is in
progress, and it should show that EC is enabled.
Except that currently it does _not_ reflect when the EC has been
disabled due to the receipt of the CED tone (sent by a FAX or modem).
Basically, it reflects that
Seems Giordano only would have gotten a response to his query of the
status of Zap/1-1 if a call _were_ in progress, hence the '-1'.
Otherwise there would have been:
Steve Davies wrote:
On 3/28/06, Giordano Grandis [EMAIL PROTECTED] wrote:
Hi all,
I'm using bristuff 0.2.0 RC8o with a HFC pci
Hmm, that control-enter thing got the better of me and sent the message
before I was done. Just wanted to mention that if a call weren't in
progress, he would have seen Zap/1-1 is not a known channel
Moj
Steve Davies wrote:
On 3/28/06, Giordano Grandis [EMAIL PROTECTED] wrote:
Hi all,
I'm
Hi there
I am using asterisk version 1.2.4. I have clients based on the iax client
library dialling into meetme sessions. I am experiencing echo in the case
where one or more users has speakers instead of headphones. So the audio
from me is fed from the other participant's speakers into their mic
Steven Langley wrote:
Hi there
I am using asterisk version 1.2.4. I have clients based on the iax client
library dialling into meetme sessions. I am experiencing echo in the case
where one or more users has speakers instead of headphones. So the audio
from me is fed from the other participant's
McDowell
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle
Sent: Wednesday, March 15, 2006 8:36 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] echo cancellation
Steven Langley wrote:
Hi there
I am
Bob McDowell wrote:
My PocketPC with ppcIAX and/or SJPhone behaves in exactly the same way.
The only resolution is to use an earbud... I'm guessing that the
server's echo cancelling is intended to cancel minor echo introduced by
the path, but doesn't handle 'real' echo caused by looping sound.
-hardware echo can Sangoma analog
card as far as I know.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 14, 2006 9:29 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE : [Asterisk-Users] Echo Cancellation
Hi
I have 3 POTS lines that I want to use with Asterisk, I am looking at
prices for FXO cards and the cards with echo cancellation are really
pricey... is echo cancellation really worth it for a 3 or 4 line
system? Will I notice a difference without the echo cancellation?
Thanks
Keith Schmidt
On Mar 14, 2006, at 9:04 AM, Keith Schmidt wrote:
I have 3 POTS lines that I want to use with Asterisk, I am looking at
prices for FXO cards and the cards with echo cancellation are really
pricey... is echo cancellation really worth it for a 3 or 4 line
system? Will I notice a difference
be as
good as hardware.
You get what you pay for.
-Original Message-
From: Keith Schmidt [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 14, 2006 9:05 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Echo Cancellation
I have 3 POTS lines
On Tue, 14 Mar 2006, Keith Schmidt wrote:
I have 3 POTS lines that I want to use with Asterisk, I am looking at prices
for FXO cards and the cards with echo cancellation are really pricey... is
echo cancellation really worth it for a 3 or 4 line system? Will I notice a
difference without the
mustardman29
Envoyé : mardi 14 mars 2006 22:24
À : 'Asterisk Users Mailing List - Non-Commercial Discussion'
Objet : RE: [Asterisk-Users] Echo Cancellation
The way I look at it, it's better to have hardware echo can and not need it
than to need it and not have it. The cards are not upgradeable to hardware
Asterisk performs echo cancellation for all incoming and outgoing calls through the T1/PRI card. However, there are some things that canstill cause echo's. We had a similar situation a with a setup much like yours. We switched to the MG2 echo canceller which helped quite a bit. But finally, after
I've got a slight problem with echo. Basically, most of the outgoing
phone calls on our system echo, but as far as I can tell, the incoming
echo has been relatively fixed, with just a bit of work left to do on
it. I read somewhere that asterisk doesn't echo cancel on outgoing
calls, am I
Can you provide some details about the system, what version of Asterisk, what kind of phones, what kind of phone lines, etc.
Erick
On 1/3/06, Aaron Daniel [EMAIL PROTECTED] wrote:
I've got a slight problem with echo.Basically, most of the outgoingphone calls on our system echo, but as far as I
We currently have about 60 cisco 7940's, which were converted from cisco
call manager to be used for asterisk. We're running 1.2.1 stable on 4
systems (primary server, backup server, gateway, and voicemail). The
phone lines come into the gateway on a digium te405p. The problem we're
having is
I am having problems with echo, first let me
explain my setup:
I have a Gateway box, which basically is an
Asterisk with a PRI card. It's only job is to
interface with 2 incoming ISDN PRI connections.
Then there are two other asterisk boxes to which
my users are registered.
Dialing from a phone
I am having problems with echo, first let me
explain my setup:
I have a Gateway box, which basically is an
Asterisk with a PRI card. It's only job is to
interface with 2 incoming ISDN PRI connections.
Then there are two other asterisk boxes to which
my users are registered.
Dialing from
Title: Message
2
Things... You probably know anyway...
Early
echo cancel for satellite just used half duplex switching as a way to get around
the echo (This led to the echo suppess tone being used for faxes and modems to
allow full duplex).
From
my Telephony days the echo comes mostly
funny guy wrote:
Just wondering, is the echo canceller in the TE411P capable of
cancelling the echo caused by the delay over satellite link (i.e. approx
400 ms delay)?
Does anyone have any success story to share?
I'm kinda stuck with a really2 annoying echo... adjusting the gain
On Tuesday 06 December 2005 00:58, funny guy wrote:
Just wondering, is the echo canceller in the TE411P capable of cancelling
the echo caused by the delay over satellite link (i.e. approx 400 ms
delay)?
No. Use MARK2, KB1 or MG2 and enable the agressive mode -- this converts your
link to a
I don't know about your echo problem, but when you have such high
latency please don't call me :)
On 12/6/05, Andrew Kohlsmith [EMAIL PROTECTED] wrote:
On Tuesday 06 December 2005 00:58, funny guy wrote:
Just wondering, is the echo canceller in the TE411P capable of cancelling
the echo
Hi,Just wondering, is the echo canceller in the TE411P capable of cancellingthe echo caused by the delay over satellite link (i.e. approx 400 ms delay)? Does anyone have any success story to share? I'm kinda stuck with a really2 annoying echo... adjusting the gain didn't help... and
On 12/6/05, funny guy [EMAIL PROTECTED] wrote:
Hi,
Just wondering, is the echo canceller in the TE411P capable of cancelling
the echo caused by the delay over satellite link (i.e. approx 400 ms delay)?
Does anyone have any success story to share?
I'm kinda stuck with a really2 annoying
Good luck. I am running dedicated echo cans and they only go to
192ms. I do not think 400ms would be regarded as toll quality which
is what most links strive for. Byt the time the echo cans buffer
enough so they can cancel 400 you would have some extreme latency.
My .02 anyway.
On Dec 6,
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