Hi, I've noticed that this happends when you have more than one Digium T1/E1 card and have not properly adjust the timing source (at least that's what happened to me).
I had the tickling problem on a box with 2 TE110P connected to PRI carriers, and we solved it changing the timing source in the zaptel.conf. The problem returned when we added a third card to the box (connected to a T1 interface) but only heard the tickling on the ISDN lines of one of the PRIs. As Peter Childs said, I suggest you to try with various timing source configurarions in your zaptel.conf until the tickling dissapears. Regards, Juan Manuel Coronado Z. "Jochen Witte" <"Jochen Witte" wrote: >No - the clocking is OK. It works correctly with different SIP stacks. > >When I use voipong to grab the sound, I can hear the klicking in all cases: >when dialing in via PSTN or by IAX / SIP. So the klicking is not on the PSTN >side, but on the RTP side. The mysterious thing is, that You can only hera >it, when dialing in via PSTN. Has anybody any idea? > >Jochen > >-- >Jochen Witte >email: [EMAIL PROTECTED] >web: http://alpha-lab.net > > >>-----Ursprüngliche Nachricht----- >>Von: Peter Childs [mailto:[EMAIL PROTECTED] >>Gesendet: Donnerstag, 28. Juli 2005 03:42 >>An: 'Asterisk Users Mailing List - Non-Commercial Discussion' >>Cc: [EMAIL PROTECTED] >>Betreff: RE: [Asterisk-Users] Klicking sounds in background >> >> >>Your ISDN clocking is slipping (or not sync'd). >> >>Your digium PRI needs to clock off the ISDN. >> >>See zaptel.conf on the Wiki and set something like... >> >>Span=1,1,... (the second '1' is important.. Ie 'use as primary sync >>source') >> >>http://www.voip-info.org/tiki-index.php?page=Zaptel.conf+span+sintax >> >> >>-- >> Peter Childs >> NEC Business Solutions Ltd >> Ph:61-8-8301-4908 Mb:61-4-0819-7693 >> IM: pjcinaus (yahoo) >> >> >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED] On Behalf Of Jochen Witte >>Sent: Wednesday, 27 July 2005 10:48 PM >>To: [email protected] >>Subject: [Asterisk-Users] Klicking sounds in background >> >> >> >>Hello, >> >>I have an IVR with Intel HMP SIP stack, which is a peer behind my Asterisk >>box (Asterisk 1.0.7, Digium PRI). When dialing in via PSTN, there are >>klicking sounds in the background, which do not appear, when dialing in >>via >>SIP (using Asterisk as pbx). The issue does not seem to be an alaw/µlaw >>problem. >> >>I tried trunking two Asterisk boxes via IAX and then call via two >>asterisks, >>but the same effect appears. Whenever there is PSTN involved, I have these >>klicking sounds, when there is no PSTN, everything works correctly. >> >>The setup works great with different SIP peers (others than the Intel...) >> >>Anyone has an idea? >> >>Best regards >>Jochen >> >>-- >>Jochen Witte >>email: [EMAIL PROTECTED] >>web: http://alpha-lab.net >> >> >>_______________________________________________ >>Asterisk-Users mailing list >>[email protected] >>http://lists.digium.com/mailman/listinfo/asterisk-users >>To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users >> > > > >_______________________________________________ >Asterisk-Users mailing list >[email protected] >http://lists.digium.com/mailman/listinfo/asterisk-users >To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
