Unable to change the IP Address on the Cisco CallManager Express and the Cisco Unity Express
The IP Address can be changed on the Cisco CallManager Express with this command:
ip source-address ip-address [port [port]]
Refer to the Activating IP Connectivity to Cisco Unity Express Software section of Installing Cisco Unity Express Software in order to change the IP Address of the service-module for the Cisco Unity Express.
Note: Before the IP Address is changed, make sure these are configured per the specific network requirements:
Refer to Cisco Unified CallManager Express Solution Reference Network Design Guide for more information.