[cisco-voip] fxo port is unregistered after reset

[Eric Pedersen]

I'm running Callmanager 5.1(2) and have a 2851 running 12.4(11)T3 with 2
FXO ports.  When I reset one of the FXO ports from callmanager it stays
unregistered until I disable and re-enable mgcp on the router.  I took a
packet capture, and when I issue the reset I see the callmanager passing
data to the router on the tcp/2428 backhaul connection, which it looks
like the router does not respond too.  Sniffer decodes this as a
"MGMT_CHAN_RESET_REQ" message.  "debug ccm-manager backhaul packets" on
the router does not show anything.

 

I thought the tcp backhaul connection was only used for keepalives
between the gateway and callmanager, and for carrying D-channel
information on PRIs so I am surprised to see anything being passed here
when there are only FXO ports on the gateway.

 

I set up another 2851 with same hardware on our testbench and it stays
registered on reset, and a packet capture shows normal mgcp packets, and
only keepalive traffic (no data) on the backhaul connection as I would
expect.

 

Has anyone seen anything like this?

 

Thanks,

Eric

 

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