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<small><font face="Verdana" size="-1"><small><big>Hi all,</big><br>
<br>
</small></font><font face="Verdana">Having an intermittent problem with
* where external voice channels suddenly pack up completely, resulting
in large amounts of 'crackling' on the line (audible at both ends of
the channel). The channel stays open and each end can still hear the
other, but the crackling is loud enough to end the conversation pretty
quickly.<br>
<br>
Problem only seems to occur when more than one call is in progress and
also appears to occur on occasion when another extension is picked up
or hung up. Problem appears to affect all in-use voice channels
simultaneously.<br>
<br>
Haven't been able to confirm whether this problem also affects internal
calls due to intermittent nature (and fact that customer makes very few
internal calls).<br>
<br>
Problem can sometimes result in a single loud 'spike' when another line
is picked up, but most often results in a loud, continuous crackling
that won't go away until the channel is terminated.<br>
<br>
As soon as the user hangs up and re-dials the problem goes away (until
next time). One user reports that problem even started when second
line started ringing on their extension (i.e. when call waiting kicked
in due to incoming call on their DDI), meaning that call in progress
had to be terminated. Incoming call (i.e. call that was on call
waiting) seemed to be fine, however.<br>
<br>
Running latest * and CAPI and using Eicon Server 4 port ISDN (BRI) card
on RHES. Mixture of 5 x SIP phones (BT102) and 4 x analogue cordless
phones (all connected to Digium TDM400P).<br>
<br>
Originally suspected problem was to do with BT102's (i.e. SIP
handsets), but problem has since occurred with analogue phones as
well. <br>
<br>
Appreciate any help with this, as source of problem not immediately
apparent and customer patience wearing pretty thin.<br>
<br>
Cheers,<br>
Damian Funnell.<br>
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