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upgrade CUCM 8.5 to 10.5 using PCD simple migration

Question asked by panjwani80 on Sep 25, 2014
Latest reply on Oct 3, 2014 by dakeller

Hi,

 

I have a small customer with CUCM 8.5 Pub and Sub. Pub is located in the DC and all the phones/gateways are registered with Sub at the office. I am using PCD simple migration process so no IP address change.

 

PCD simple migration is a three step process:

 

1) Export the data from Pub and Sub

2) Shutdown the production Pub and install/import configuration into new Pub 10.5.

3) Shutdown the production Sub and install/import configuration into new Sub 10.5.

 

My question is if I put a "pause" after step 2 it should not caused any outage up until that point right because all phones and gateways are registered with Sub onsite?

 

Thanks

Aamir

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