If I understand correctly you were trying to install a UC application probably CUCM on MCS server and enabled DHCP accidentally.
Connect a KVM to console into your server:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/7_0_1/cli_ref.html#wp39961
This command enables or disables DHCP for Ethernet interface 0. You cannot configure Ethernet interface 1.
Command Syntax
set network dhcp eth0
enable
disable node_ip net_mask gateway_ip
Parameters
•eth0 specifies Ethernet interface 0.
•enable enables DHCP.
•disable disables DHCP.
•node_ip represents the new static IP address for the server.
•net_mask represnets the subnet mask for the server.
•gateway_ip represents the IP address of the default gateway.
Usage Guidelines
The system asks whether you want to continue to execute this command.
Caution If you continue, this command causes the system to restart. Cisco also recommends that you restart all nodes whenever any IP address gets changed.
-Terry