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<DIV><SPAN class=156110219-16092007><FONT face=Arial
size=2>Hi,</FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>I have noticed a
strange problem with our IPCC Call Centre. There are 4 E1 PRI per Voice
gateways, connected formerly via MGCP to a CCM Cluster. The calls are coming in
and are connected, but the caller hears only a dump ringback, or just something
like a dead connection. The calls go to an CTI route point in the CCM, which
points to the IPCC. </FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>Phone->Voip PBX
-> ISDN by COLT-> Cisco VG2821 ->
CCM->IPCC</FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>We are not able to
reproduce the error by calling via mobile, Cisco Phones or any other not SIP
phone. </FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007></SPAN><SPAN class=156110219-16092007><FONT
face=Arial size=2></FONT></SPAN><SPAN class=156110219-16092007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>I have checked all
ISDN q931 logs and the calls show up as connected until the caller hangs up, but
he is not able to hear anything.</FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>I have also noticed,
that if I call in via my SIP provider for testing my call is disconnected. So
this could by a problem of my SIP provider, but I'm not sure. We will now try if
he is able to call a normal phone number, that does not go to
IPCC.</FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>Has anyone ever
noticed such a behavior?</FONT></SPAN></DIV>
<DIV><SPAN class=156110219-16092007><FONT face=Arial size=2>Many thanks in
advance</FONT></SPAN></DIV></BODY></HTML>