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Hi all, We have just installed a * server (CVS head) with a TE110P card and a IDSN20 line, we are using the GXP-2000 handsets running the latest firmware (.9). Some of the calls we are receiving have echo at the our end (we can hear ourselves speak). We have a traditional ISDN telephone system here as well and when I make a call from one of the handsets asterisk answers, directs the call to

...ed ztmonitor. What happens is I experience midcall echo. I turned on aggressive_suppressor and it seems to do great. The problem happens with misc. noise around the office will cause it to mute the other end of a phone call while they are talking. I haven't been able to find anywhere in the MEC2 source to limit when it mutes the remote party. It seems to do it with just the slightest bit of sound coming from the room. What are my options besides getting mad and ordering a PRI and a TE100? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium....

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

I have minor echo on an IAX2 channel when using Firefly and a head set. I have tried various headsets and settings but still a little bit of the echo remains and I'd love to get rid of it. After some research I stubled on zaptel/mec2.h but it seem that it works only on the ZAP channel. Is there something I can do on the IAX2 channel?

...t be disabled during > > this test and the results of the echo cancellation operations should > > be recorded and saved in a separate channel. > > > > > > *** Change variables used to control echo cancellation. > > > > Only the code in mec2.h is of interest. > > > > I will help identify the variables and modify the mec2.h code as > > needed to accomplish this goal. > > > > There are a lot of parameters in mec2.h that may affect the quality > > of the echo cancellation. I want...

Hi. I'm working with i4l with asterisk CVS-02/21/03-13:59:12, plus i4l (chan modem i4l *dsp patched* and kernel 2.4.19 patched to disable dtmf). All seems ok (apart some echo issues that seems gone with mec2 aggressive suppressor), but outgoing dtmf doesn't work . or at least I hear the very first part of the dtmf, but then it seems suppressed. here's my modem.conf [interfaces] context=telecom dialtype=tone mode=immediate features=dtmf,noquelch driver=i4l group=1 msn=xxxxxxxxx device => /d...

...by the mic in phone 1 By the second ring the echocan thinks it's figured things out, but the ringtone on phone 1 suddenly changes to a different sound. Asterisk box is now completely locked up and the phones continue to ring regardless of whether they are answered of hungup. Same scenario with mec2 and all is well with the world. Looks like I won't be using mec3 anytime soon. Is anyone else able to confirm this issue with mec3? --Karl -- Karl Putland <karl@putland.linux-site.net>

...iders facilities (eg. variations in level padding: http://yarchive.net/phone/digital_pads.html) Of all of these, I remain convinced that in most cases the real issue is something like the last. Namely that subtle differences between facilities are interfering with the assumptions the mathmatics in mec2 use - it's a very rigid model and makes use a number of fixed assumptions about average signal levels, offsets and so on. Kris Boutilier Information Systems Coordinator Sunshine Coast Regional District

Being one the many people trying to track down echo 'ghosts' I ran across this page: http://lists.digium.com/pipermail/asterisk-users/2004-November/071301.html suggesting ways to adjust the gain. I have a TDM400P 2x2 config with Kewlstart lines configured. I've located a local telco milliwatt test line, and when I call it, the gain numbers are no where near 14844. Now, this

I am getting ready to experiment with the Tellabs 2752 echo canceller. I have a 255D shelf (and power supply), but am struggling a little on connecting the echo canceller to a PRI. The shelf has 4 25-pair amphenol connectors. The two on the line side are marked "Receive In" and "Send Out". The 2 connectors on the drop side are marked "Send In" and "Receive

Hello, After solving the other "low hanging fruit" audio issues in our Asterisk PBX, we are left with occasional cases of severe echo which we have not found a solution for yet. Our system: - Asterisk 1.2.0-beta1 - TE110P on a PRI - TDM04 and TDM40, but these are unrelated to current echo issues - Fedora core 3 - Echo canceller KB1 Most calls have minimal, acceptable echo levels. But

...e $(TOPDIR)/Rules.make #endif MOD_DESTDIR := zaptel devel: tor2ee tests: patgen pattest patlooptest hdlcstress hdlctest hdlcgen hdlcverify timertest tor2.o: tor2.c tor2-hw.h tor.h tor2fw.h zaptel.h $(HOSTCC) $(KFLAGS) -c tor2.c zaptel.o: zaptel.c zaptel.h digits.h arith.h sec.h mec.h sec-2.h mec2.h mec3.h $(HOSTCC) $(KFLAGS) -c zaptel.c torisa.o: torisa.c zaptel.h torisa.h $(HOSTCC) $(KFLAGS) -c torisa.c wcusb.o: wcusb.c wcusb.h zaptel.h $(HOSTCC) $(KFLAGS) -c wcusb.c wcfxsusb.o: wcfxsusb.c wcfxsusb.h zaptel.h $(HOSTCC) $(KFLAGS) -c wcfxsusb.c wcfxo.o: wcfxo.c zaptel.h $(HOSTCC) $...