BerkHolz, Steven
2006-Oct-13 10:51 UTC
[asterisk-users] Inhouse SIP to ZAP has echo sometimes.
Sometimes we get echo heard on SIP phone when dialing out. Zap channel is on a TE411 Card. It is using a PRI to XO. As far as I know echo is created on the far side. Could the Zaptel card be the far side as far as the SIP phone is concerned? Calls from our soon to retire legacy PBX do not have this problem. Those calls are Legacy - PRI - asterisk -PRI - XO - Dest. Any suggestions? Zaptel.conf: context=from-pstn switchtype=national pridialplan=unknown prilocaldialplan=unknown priindication=inband signalling=pri_cpe usecallerid=yes hidecallerid=no usecallingpres=yes echocancel=yes echocancelwhenbridged=yes echotraining=yes group=0 callgroup=1 pickupgroup=1 useincomingcalleridonzaptransfer=yes callerid=asreceived accountcode=I musiconhold=default overlapdial=no facilityenable=yes nsf=none channel => 1-23 I also set "static int vpmdtmfsupport = 0;" in wct4xxp.c to remove sporotic DTMF tones. Thank You, Steven BerkHolz - MCSA - MCSE - Manager of Information Systems TESCO Group Companies Fax. 248-836-5101 www.TESCOGroup.com Board member of www.glimasoutheast.org -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20061013/bd0b496b/attachment.htm
Hello. I had the same problem, and was able to fix it as follows. 1. Run fxotune 2. Call your XO rep and get a milliwatt test line number 3. set the gain in the zaptel.conf incoming with the milliwatt test line 4. loop a call through the pbx and set the outgoing gain. With these setup properly, the echo problem goes away. -Ejay _____ From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of BerkHolz, Steven Sent: Friday, October 13, 2006 12:51 PM To: asterisk-users@lists.digium.com Subject: [asterisk-users] Inhouse SIP to ZAP has echo sometimes. Sometimes we get echo heard on SIP phone when dialing out. Zap channel is on a TE411 Card. It is using a PRI to XO. As far as I know echo is created on the far side. Could the Zaptel card be the far side as far as the SIP phone is concerned? Calls from our soon to retire legacy PBX do not have this problem. Those calls are Legacy - PRI - asterisk -PRI - XO - Dest. Any suggestions? Zaptel.conf: context=from-pstn switchtype=national pridialplan=unknown prilocaldialplan=unknown priindication=inband signalling=pri_cpe usecallerid=yes hidecallerid=no usecallingpres=yes echocancel=yes echocancelwhenbridged=yes echotraining=yes group=0 callgroup=1 pickupgroup=1 useincomingcalleridonzaptransfer=yes callerid=asreceived accountcode=I musiconhold=default overlapdial=no facilityenable=yes nsf=none channel => 1-23 I also set "static int vpmdtmfsupport = 0;" in wct4xxp.c to remove sporotic DTMF tones. Thank You, Steven BerkHolz - MCSA - MCSE - Manager of Information Systems TESCO Group Companies Fax. 248-836-5101 www.TESCOGroup.com Board member of www.glimasoutheast.org -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20061016/a5563794/attachment.htm