[cisco-voip] DNS Change - CUCM/UNITY/IMP/EPRESSWAY

[Jon Fox]

Hello all.


Just looking for a little guidance
 
We are potentially looking at changing our DNS Servers that our voice servers use.
I am looking for some advice/guidance/ clarification and the process of each of our voice servers.
 
For example will i need to re-host the licenses.
Will i need to re-generate certificates.
Will i need to make changes on our VGs/MGCP Gateways?
Will i need to reboot all the handsets?
Will i need to make changes to the DHCP Server and its options.
 
 
Server Versions below:
CUCM - 10.5.1 (Mixed Mode)
IMP 10.5.1
UNITY 9.1.2
EXPRESSWAY C/E - 8.7


Many thanks
JF
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