Phone with encryption does not work with unsecure CFB

Unanswered Question
Jul 24th, 2008

Hi all,

I've got 7941's here with encryption turned on. It seems working fine, on calls between these phones, the Lock-symbol is shown, on calls with the PSTN or not-encrypting phones it's not.

When I start an ad-hoc conference, all encrypting participants have no audio. The non-encrypting participants can hear each other. The call statictics on a 7941 show 0 recvr packets, but wireshark says that udp-packets flow in both directions.

The conference bridge is unsecure.

From my understanding, the encrypting phones should fall back to "unsecure mode" when an unsecure cfb is available only. Am I wrong here?

The CCM Version is

7941 FW version is SCCP41.8-3-4SR1S

any ideas?

Thanks in advance


I have this problem too.
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