AW: [Asterisk-Users] Klicking sounds in background

[Juan Manuel Coronado Z.]

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: jwitte at alpha-lab.net
>web: http://alpha-lab.net 
>
>
>>-----Ursprüngliche Nachricht-----
>>Von: Peter Childs [mailto:peter.childs at nec.com.au]
>>Gesendet: Donnerstag, 28. Juli 2005 03:42
>>An: 'Asterisk Users Mailing List - Non-Commercial Discussion'
>>Cc: jwitte at alpha-lab.net
>>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: asterisk-users-bounces at lists.digium.com
>>[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jochen Witte
>>Sent: Wednesday, 27 July 2005 10:48 PM
>>To: asterisk-users at lists.digium.com
>>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: jwitte at alpha-lab.net
>>web: http://alpha-lab.net
>>
>>
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>
>
>
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