2821 Router with EVM-HD-6FXO

Hi all,
I want to buy a 2821 router with an EVM-HD-6FXO module. The 2821 is running IOS "c2800nm-ipbase-mz.124-15.T10.bin". My question is can I use the 2821 as a Gateway for CUCM v10.5 or if I have change upgrade the IOS to a different version.
Thanks.

Yes, run SIP or H323 which is version agnostic, even MGCP will work though according to Cisco 15.X code is required.
Chris

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