External calls with Call Manager from VPN connections

Posted on 2006-03-20
Last Modified: 2013-12-03
We recently installed Cisco Callmanager for VOIP in our main office.  Our VPN employees can call into office and it works fine. But when VPN employees can make connections to other VPN employees or POTS, their is no voice connection on either end.   VPNs are routed through a PIX Firewall and all three VPN employees can see the call manager server.   Installation company thinks it is something in our firewall.  Any ideas?  
Question by:larrybarlow
    1 Comment
    LVL 27

    Accepted Solution

    Let's clarify.
    Suppose you have an Office user and Remote user.

    1) connection from Office to Remote is OK from voip to voip terminal
    2) connection from Remote to Office is OK from voip to voip terminal
    3) connection from Remote1 to Remote2 is broken
    4) connection from Remote to office is brotek from voip to pots termilal

    is it?

    If it's correct, problem 4) is in Cisco CallManager or voip gateway configuration
    problem 3) may be in Cisco or may be in firewall. For shure try the following:
    Remote1 has IP1
    Remote2 has IP2
    Try to connect directly from Remote1 to Remote2 via netmeeting application using IP addresses for destination if this works, the problem in Cisco, else in firewall. Netmeeting is standard for all Windows and resides in Program Files/NetMeeting/conf.exe


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