IP comunicator over VPN

Unanswered Question
Jun 1st, 2009
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I have UCCM version 7.0, IP communicator version 7.0.2 and Check Point firewall for VPN. My IP communicator works fine when I'm in LAN.

When I connect through VPN, IP communicator is registered with UCCM. The IP address of IP communicator is the IP address of PC from VPN pool. But, when I call some IP phone in LAN (the phone is in the same LAN as UCCM), the phone ringing and when the phone goes off-hook, my communicator lose connection with UCCM and resets.

On CP firewall I got an error:

Illegal redirection> is the UCCM server and is the IP phone in the same VLAN.

What can be a problem?



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Dennis Mink Mon, 06/01/2009 - 05:07
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when you ring your phone from IPcomm. you have two legs:

-Ip comm.-->CUCM

-CUCM--->LAN phone

when your lan phone goes off hook, the RTP stream between your 2 endpoint will be established.

My advise look at what your firewall is permitting regarding RTP between the relevant subnets


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