[cisco-voip] IP Communicator 7.0(1)

[Ryan Ratliff]

Is the caller in your description the one using CIPC?

In your Wireshark capture look at the SCCP OpenReceiveChannelAck that  
CIPC sends to CUCM.  Make sure the IP address CIPC sends is routable  
to the devices on the other side of the VPN.

-Ryan

On May 12, 2009, at 9:09 AM, Cauthen, John A. wrote:

We are experiencing a one-way audio issue when using IP Communicator  
7.0(1) through VPN.  The caller can hear the other party but, the  
other party cannot hear the caller.  Troubleshooting:



-          CIPC works in the office on the LAN

-          CIPC works when directly connected to a port on the core  
Switch on the VPN VLAN (receiving a VPN IP address)

-          CIPC doesn’t work through the Cisco ASA SSL VPN solution,  
or the Cisco VPN Concentrator

-          We have also used Wireshark to see if there was any  
difference in the communication when going through VPN compared to  
when CIPC works.  The only thing I notice is that when connected to  
the VPN the communication is one-way as well.  The source is always  
the voice VLAN.



We are on CUCM 6.1(2) using SCCP.   If you can help please let me  
know what I am missing...I am sure it is just staring me in the face.



  Thanks,



John

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