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Community Member

IP Communicator


I am connecting to CCM4.1 thru VPN & have IPcommunicator installed on my machine.In IPC,under the preference option for TFTP server i have given CCM IP,i have done the phone config in CCM,but its still showing the error as "Phone not registered".

I checked the connectivity to CCM thru my machine, ping response is fine.

Can any one let me know what could be the possible reason for this error.


Re: IP Communicator

I am assuming that the CCM IP that you configured is running the TFTP service.

Is there a firewall between the CCM server and the general network? If so, TFTP/voice traffic from your VPN network may not be allowed through the firewall.

If you are connected normally at work (not through VPN) does your communicator register?

Community Member

Re: IP Communicator

Hi Adam,

Yes we do have a firewall in between CCM server & local network.I have asked the local team to open the TCP port 2000.Will let you know once done.

Re: IP Communicator

On the IPC Preferences are you choosing the PC adaptor or the VPN? Try using the VPN, I also recommend you to take a sniffer trace to see the packet exchange

Community Member

Re: IP Communicator

hi jbarcena,

I have used VPN Adaptor for under the IPC Preferences.



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