I have Cisco Call Manager version 6.0 running, in 'inside' zone of ASA 5520 Firewall, in my network. I'm trying to register Cisco IP phone connected in DMZ zone with CUCM running in inside zone.
To achieve CUCM connectivity, have configured static NAT in Cisco Firewall.
After this i observed IP phone got connected to CUCM and also able to download upgrade image, but it fails to register to CUCM.
Further to this IP phone show perfered CM as orginal IP address of CUCM, that not the NATed IP address. This could be because of XML file which IP phone has got from CUCM.
1) Do NAT won't work with CUCM??
2) Is there any wayout to edit XML file, so that perfered CM could alter?
Please let me know!