i have MGCP gateway which is registered to call manager 7.1.3 and this gateway is connected to Nortel PABX through PRI (Qsiq). This PABX is having Nortel phones. On my CUCM I have internal phones with partition. i created CSS having the partition phones. My phones can call each other and can call to PSTN.
My is is that calls comming from PSTN and from PABX are not reaching Cisco phones which seems that the CSS under the MGCP gateway is not working. note that if i remove the partition from my phones i can receive calls. Also i tested the gateway with H323 and it is working fine.
My issue is similar of what was mentioned in a previous post (link below). It look like it is a common problem.
Did you click 'reset gateway' after changing the CSS on the gateway, so that the CM DB is updated with the new CSS?
You can get a details CM trace and search for dd="5555" replacing 5555 with the dialed number. Around there you will see pss="partition1, partition2,etc" which is a list of the partitions in the CSS which CM has as the active CSS for the calling device.
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