Remote OC user - External PSTN call fails. Internal OC user works fine RRS feed

  • Question

  • All,
    I have Consolidated Edge Server (Access, Web,A/V) topology installed in the DMZ.
    The OCS Front End and Mediation servers are installed inside the network.

    For any internal OC user the outbound call goes through fine to the PSTN world via Gateway.

    But for the same OC user from a remote location (becomes a remote user) the outbound call fails. The phone rings - that tells the SIP message is flowing..But the media doesn't get connected...What could be the problem when the user is remote.

    Can someone tell me the flow of SIP and RTP stream in this case?

    Wednesday, October 29, 2008 3:59 PM

All replies

  • Hi


    Did You configure publicly routable IP address on the A/V Edge interface ?


    Best regards.



    Wednesday, October 29, 2008 7:31 PM
  • First of all thanks Maciek for the reply.

    Yes it is publicly routable IP. The Consolidated Edge Server has 2 nics one internal and one external. The external is publicly routable without NATing.

    The Video call works. So I am wondering something has to do with Mediation server to the remote user communication. The remote user is behind a NAT router.
    Wednesday, October 29, 2008 8:41 PM
  • Atlast figured this out. My remote user should not be behind a NAT router or the router should support full port forwarding with unrestricted two way communication. I initially saw the error "cannot process routing destination". Basically the Mediation server through Edge is not able to route or connect the RTP to the remote user computer. So configured my router and things are looking good.
    Wednesday, October 29, 2008 10:22 PM