[Asterisk-Users] Klicking sounds in background

[MF Hulber]

Just a thought:  do you have DSL on the PSTN line and are you using a 
line filter?

MARK.

Jochen Witte wrote:

>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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