similar to: Best echo canceller?

> -----Original Message----- > From: asterisk-users-bounces@lists.digium.com > [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Andrew > Kohlsmith > Sent: Thursday, September 29, 2005 2:23 PM > To: asterisk-users@lists.digium.com > Subject: Re: [Asterisk-Users] Best echo canceller? > > > On Thursday 29 September 2005 17:04, Claudio Canseco wrote: >

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

Hi everybody!! I'm trying to assign boolean values to a column in a matrix depending on the number of times present in another column. I have no clue, I have been 2 days looking for a way, if somebody knows what kind of functions I need to use I will really apreciate it. example: Color Type Mark1 Mark2 Mark3 Red high 139 P alpha blue low 140 P alpha Green high

I have a bad echo problem on my TDM400P with one FXO module installed. I have tried a few things, such as: * setting rxgain and txgain to 0 * setting echocancelwhenbridged to no / yes * settting echocancel to 64 / no / yes * setting echocanceltraining to 800 / no / yes * MG2 echo cancellation * MARK2 echo cancellation * KB1 echo cancellation * AGGRESSIVE_SUPPRESSOR option of MARK2 Each time

Hi, I've had some decent luck with the mark3 echo canceller from the zaptel driver, echos on about 20% of the calls, people I've called say I sound great now, but our side hears echos. I was wondering if there was any way to tweak the current software cancelers into using more CPU (and hopefully doing a better job, close to a hardware canceler), I only have 10 lines, and a single call

hi to all, I''m studying traffic shaping using kernel 2.6.8 (debian sarge). well, I have this problem: priority doesn''t work. I try with: - qdisc prio: tc qdisc add dev eth1 root handle 12: prio bands 3 tc qdisc add dev eth1 parent 12:1 handle 13: tbf rate 10Mbit buffer 1600 limit 3000

What options do the others offer over one another? Is there a difference, or is it simply a case of one superseding the other? Would be good to put something together that details the different methods, and which situations maybe they better suit, if any. Ben -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of

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.

Hi list, would like to know if some of you have tested asterisk connected to an EADS 6550 analogique PBX (also know as Nexpan50). Our set up is a Dell Optiplex with 1 TDM400 4 FXO, 1 TDM400 4 FXS, (no other card, each of them have their own IRQ) all ports connected to the EADS. We have GS ATA286 as EP. Calling from ATA to ATA give a perfect sound. Calling to PSTN numbers or reverse side,

Hello, I'm a newbie user of Asterisk, i'm sucessfully install it it's great but, i get some problems with echo in a adsl line. My system is a TDM440P with 3 FXO Ports and 1 FXS. Asterisk 1.2.13 Zaptel 1.2.11 Line 1 - Analog Line 2 - Analog with ADSL It's installed with two analog lines one of them have a ADSL splitter. The location are Spain, i load the tdm driver with opermode

I have been doing some research on echoes and echo cancellation. Here is a summary of what I've learned: 1) When solving echo problems it is extremely important to locate the source of the echo, and if possible, eliminate it at the source. The most common cause of echo is an unbalanced hybrid at the PSTN to TDM interface. This is where the 2-wire POTS line is divided into a 4-wire

I'm a complete Asterisk novice and have an installation based on the Asterisk@HomeCD. I've installed my TDM400P with 2 x FXO & 2 x FXS, but every time I try to dial out, I get a message "No circuits available". Can someone confirm the pinouts for connecting the FXO's to a UK BT Line - I have RJ11 connectors on the back of my TDM400P card, so ideally I'd like to

Hi all, i've got samba 3.6 joined to a ad domain (s4 in this case) running winbind all looks ok, but i ran into a problem (for us that is) i've got 2 groups (students and employes) who have there home dirs in 2 different places. /home/students/<user> /home/employ/<user> so far so good, but i can't make the [homes] work for both of them (just 1 group) in winbind

Hello, Getting this error on dahdi_cfg. Reverting to 2.8 the error goes away: *line 15: Unable to create 'dahdi_cfg' mutex.* Is this a problem? Thanks in advance. Full detail: [ebox]> dahdi_cfg -vvvvvvv DAHDI Tools Version - 2.9.0.1 DAHDI Version: 2.9.0 Echo Canceller(s): HWEC Configuration ====================== SPAN 1: CCS/ AMI Build-out: 0 db (CSU)/0-133 feet (DSX-1) SPAN 2:

4.0.6 with 3.6.12 file server Hi Ordinary users can connect fine: smbclient //oliva/users -Usteve2 Enter steve2's password: Domain=[HH3] OS=[Unix] Server=[Samba 3.6.9] smb: \> log: schannel_fetch_session_key_tdb: restored schannel info key SECRETS/SCHANNEL/OLIVA schannel_store_session_key_tdb: stored schannel info with key SECRETS/SCHANNEL/OLIVA auth_check_password_send: Checking

Hi I'm trying to make a share called dropbox rw for members of a group. /usr/local/samba/etc/smb.conf [global] server role = domain controller workgroup = CACTUS realm = hh3.site netbios name = HH3 passdb backend = samba4 template shell = /bin/bash [netlogon] path = /usr/local/samba/var/locks/sysvol/hh3.site/scripts read only = No [sysvol] path =

Hi everone. Ubuntu 12.04 v3.6 clients with winbind joined to 12.04 Samba4 DC Clients: smb.conf [global] realm = polop.site workgroup = POLOP security = ADS wide links = Yes unix extensions = No template shell = /bin/bash winbind enum users = Yes winbind enum groups = Yes idmap uid = 300000-400000 idmap gid = 20000-30000 /etc/nsswitch.conf passwd: compat winbind group: compat

Y'all will know me on this circuit for the past year or so, and you'll know I've done some pretty intense testing with various aspects of Asterisk and Zaptel drivers. The Kris Boutilier's modifiecations to the MARK2 echo canceller are A#1. I have always had a little residual echo on my home zap lines and the odd echo on my PRI lines (not connected through the TE406). It was

Hi, I've got some weird sound artifacts happening during calls, they're very hard to describe, so I have a 122kb recording: http://openprojects.rarcoa.com/~miztic/artifact.wav normally the artifacts are just short blips, not quite as long as the one above, but they sound the same. When using the aggressive echo suppressor, it seems like those artifacts cause a really loud buzzing sound to

Folks, I've been following recent discussions regarding echo and echo training with much interest, since it's a problem we've never been able to eliminate here. We're facing two challenges presently, and they may be related (or not): a) Cisco 7960s in the office here echo back to our staff, but the customer hears decent sound. b) We've yet to be able to pass faxes through