09-01-2010 01:18 PM - edited 03-16-2019 12:34 AM
I have to (2) CCM 4.2 clusters that needs to be upgraded to CUCM 7.1 and want to upgrade (1) cluster at a time. If I upgrade (1) cluster to 7.1 and left the other cluster on 4.2, will the inter-cluster trunk still work after upgrade???
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09-01-2010 01:23 PM
I believe so, i did the exact same thing a year or so ago and had no problems.
09-01-2010 01:36 PM
Nelson,
Yes, ICT will work just fine. I have recently (1 month ago) done this at
two separate customers, using the exact same versions you are dealing with.
In the past year, we have done this quite a bit and have had good success.
Make sure you pay attention to dial plan overlaps and Regions/CODECs and you
should be good to go.
HTH.
Regards,
Bill
On 9/1/10 4:18 PM, "nelson.chu"
Please remember to rate helpful responses and identify
09-01-2010 01:23 PM
I believe so, i did the exact same thing a year or so ago and had no problems.
09-01-2010 01:36 PM
Nelson,
Yes, ICT will work just fine. I have recently (1 month ago) done this at
two separate customers, using the exact same versions you are dealing with.
In the past year, we have done this quite a bit and have had good success.
Make sure you pay attention to dial plan overlaps and Regions/CODECs and you
should be good to go.
HTH.
Regards,
Bill
On 9/1/10 4:18 PM, "nelson.chu"
Please remember to rate helpful responses and identify
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