I've a cisco callmanager express 4.2 on cisco router 2821.
I need to upgrade it to a new CME version.
I need to connect to the CME more Iphones.
Which version of IOS (or CME) support this feature?
Actually I've a 12.4.3 IOS version.
To upgrade IOS is necessary to open a smartnet?
thanks in advance
Go to Solution.
Yes you need to update.
However since your router is very old, no support contract can be purchased anymore.
You best approach is to engage a reputable consultant, or UC certified Cisco partner, and let them resolve all the issues.
View solution in original post
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: