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Cisco Call Manager 5.1 with ISDN 2E

WillScott250 asked
Last Modified: 2010-04-12
HI All,

Having problems configuring Cisco Call Manager 5.1 with a Cisco 2811 MGCP controlled gateway connected to 4 ISDN 2e circuits. Configured the gateway via the GUI and the gateway has successfully synced the config and is talking to Call Manager wihout any problems, the ISDN 2e endpoints are also reporting as registered. Created the nesessary route patteren and line groups etc but when making a call I receive a busy tone.

ISDN is reporting as  'MULTIPLE_FRAME_ESTABLISHED' on the gateway, and q921 messages show TX and RX messages.

Can anyone help with this?


Watch Question

ok try this

add the mgcp on the differt device pool  and also add the MGCP in the same call search space as the phones. they need to belong in the same partion.

i had the same problem ones.

let me knwo the out come because i have a work around.


Tried something similar to that already but it didnt work

Did discover the problem in the end, I didnt add the below config lines to the gateway router. Works without any problems afterwards.

mgcp bind control source-interface FastEthernet0/0
mgcp bind media source-interface FastEthernet0/0

Thanks for the suggestion anyway
This one is on us!
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