Displaying 20 results from an estimated 8000 matches similar to: "Why echo occurs"
2006 Mar 03
4
Echo Cancelation on TE110P
On a 55 station install onto a Cox PRI with a TE110P (Polycom 501 phones) a
few users are complaiining about echo. According to the users, the echo
seems to be phone number dependant. They claim that certain phone numbers
have echo while others dont. Are there any tuning parametes like there is
for a TDM400 card?
Kerry Garrison
Director of Technical Services
Tech Data Pros - Orange County's
2006 Jun 13
1
echo sidetone grandstream and tdm400p
Hi all,
thanks to the all of you. This list is very interesting also for a newby like me.
My problem: I just setup my first full working asterisk installation with this
config:
1. n.1 GXP-2000
2. n.4 Budgetone 102
3. n.1 TDM400p (3 FXS, 1 FXO)
Everything seems to work fine, but the sidetone... it's really annoying!
We can hear the sidetone only when we call to the outside (PSTN), it
2004 Jan 04
2
Earpiece Connections
Does anyone know of a piece of hardware that can allow multiple earpices
to be connected directly to a server running Asterisk.
I hope I am not being to vague but basically I am looking to allow a
call center to user the server to do all of the "Pickup" and "Hangup"
functions.
The operators will merely have to have th earpiece in their ear. I have
seen serial pieces of
2004 Nov 21
3
Headsets for Cisco 7940/7960
What headsets have people found work well with the Cisco 7940 and 7960
phones? To date, I have tried a couple of the headsets within the
Plantronics H series (H41-N), and noticed that the volume of my speaking
is lower over the headset than on the regular handset. I am currently
looking for headsets that are known to work well. I do know that Cisco
lists the H-91 and H-101 as certified to
2004 Jan 24
3
Grandstream 100 sidetone
For people who are using GS 101, what do you think the sidetone
generated by the phone.
I find mind a bit annoying. It has a delay and you notice it as an echo.
The volume of the sidetone is also quite hight. I am distracted when
both caller and called party talking over each other occasssionally.
The volume of the sidetone can be turned down using the volume button
but it also control the
2003 Dec 26
3
Re: time to build an open phone?
ACES - Asterisk Communications Endpoint System
{the following could be used by any IP-PBX but the name pays homage to Mark Spencer and friends who
cannot be lauded enough for their fine work}
As you read this it will be obvious I am not a professional engineer but I do have enough knowledge
to be fairly certain what I'm proposing is feasible from not only an engineering, but production
2006 Nov 04
4
SPA3k wired to PAP2 for echo testing
In my seemingly endless search for the cause of echo on my SPA3000, I
wired it up in the following configuration:
Analogue Handset <--> (FXS)SPA3000(FXO) <--> PAP2
And set the Line1 dialplan on the SPA3k to '(<:@gw0>S0)' which means
that as soon as I pick up the handset I get linked straight through to
the PAP2, which gives me dialtone.
Even in this configuration, with
2004 Jun 22
2
sidetone noticeably loud on analog handsets on T100P
Hi guys,
I've run into a problem that I can't figure out on a bunch of handsets I
have running into a Rhino Equipment 24-port FXS channel bank hooked up
to a T100P and running asterisk-0.9.0 and the associated stable Zaptel
release.
The sidetone (your own voice that you hear in your handset, built in for
comfort) is noticeably louder than it should be, and it doesn't seem to
2007 Dec 07
2
Sidetone with Snom 370
Hi all,
I'm not getting any sidetone on my Snom 370. I searched the web and the snom
wiki, but I don't see any place to enable/adjust it. Callers say I sound
great on the other end, but I don't hear myself so it is a little
off-putting. Any suggestions would be appreciated.
On a related note, some times (maybe 1 out of 10 calls) I get the side tone,
but its delayed by a second or
2006 Oct 15
2
SPA942 quality for a Bank
Before committing to about 50 of the spa942's, I like to take a last
poll from those on the list to identify any negative issues that might
be associated with the audio, functionality, early failures, etc, on the
spa942.
Expecting to deploy these using existing cat5 cabling and both rj45
jacks. Been using three of theme in a short term demo with the customer,
but the demo systems has
2006 May 25
2
Volume configuration on Polycom Soundpoint 501phone
Could not find your post for 4 months ago.
-------------- Original message --------------
From: "Anton Krall" <akrall-lists@intruder.com.mx>
> Yes, check a post that I made about 4 months ago, I posted the cofig for
> setting the speaker, handset and ring volumes ..
>
> |-----Original Message-----
> |From: asterisk-users-bounces@lists.digium.com
>
2007 Apr 09
3
Too much silence, perceived delay
In a system connected to a verizon T1, Digium TE411P (quad T1 echo cancellation), client is complaining it is "too quiet".
The complaint regards calls over the T1, not in house SIP only calls.
Their description indicates they want some earpiece feedback of themselves speaking. Also, they complain that it takes several seconds (3-4) for the other party to respond. That is kind of
2004 Jan 30
3
Call quality questions
Our basic system is as follows:
P4 3.0 Ghz w/ HT, 1GB PC3200 RAM, 120 GB HDD, RH 9.0 OS, * from CVS
several weeks ago, working OK for routing, VM, and AA, calls in on
separate PSTN lines to Adtran TSU 600, into * server through T100P card.
The hardware is not taxed at all with little over 20% proc utilization
ever, low mem use, etc. All Phones are SNOM 200's with various firmware
revisions
2009 Nov 22
1
End to End delay calculation
Hi!
I am looking to calculate the end-to-end delay between two soft phone/hard phone. I have asterisk server and configured ntp server on the same machine and synchronized it with ntp pool. I have seen that Wireshark can be used to check the jitter. But I am not sure how can i calculate the end to end.
May be this is not related to the mailing list topic but please help me if anyone has some
2004 May 07
1
Cisco 7940 microphone volume
When talking to me, people are complaining the volume was not high enough.
The phone only allows to change the volume of the speaker/earpiece. Is
there an alternative solution? Is it possible to increase the volume in
asterisk?
Frederic
2006 Apr 07
6
Beeps and noises during calls
I have a very annoying problem that we hear on our end, but the other
party doesn't hear. There are random beeps and echo type noises that
occur. They are present during voicemails, and present on my end during
calls. Is anyone experiencing the same deal? I have asked this a
number of ways on the list, and never get a response...
Thank you.
Sean Garland
Mount Shasta, CA
2008 Nov 06
2
TDM400 with FXS some handsets not ringing
Folks,
I have a TDM400 with an FXS module. I'm having some trouble ringing
some phones attached to the device.
I have a real el cheapo handset that cost me about 9UKP. It works fine,
I plug it into the Wildcard and call the channel and it rings.
I have tried plugging in my BT Diverse 3016 cordless phone but it will
not ring, although I can call out from it.
I have also tried my GPO 332L
2006 Nov 10
3
SPA-941 (and others ) Transmit Sound Quality
Hello,
This is not exactly an Asterisk question, but I was encouraged to seek
advice here anyway. The kindness of the * open source community is
legendary :)
I am getting going with an Asterisk 1.2 box, and I'm having trouble
getting good quality transmit sound using handsets with VoIP phones. I'm
primarily trying to focus on SPA-941, but also experimenting with Aastra
9113i and Uniden
2005 Jun 07
2
Help! Zap echo on bridged calls
I've been going nuts lately trying to get rid of an annoying echo
problem that makes my asterisk server unusable when clients try to call me.
Here's the breakdown of the issue - Hoping that someone can throw me a
clue:
My setup is as such:
Single AMD Athon machine with X100P clone card and voip through multiple
providers .
* Inbound calls through the X100P that do not bridge to
2005 Mar 04
2
Bluetooth phone as SIP handset?
Even better you can set your firefly softphone to auto answer so that
you don't even need to be near the pc to answer.
Cheers,
Dean
-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Linn Boyd
Sent: Friday, March 04, 2005 2:12 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: