Do we need to worry if a specific SRST version is compatible with CUCM?
We need not worry about the specific SRST version compatibility with CUCM. SRST version doesnt depend on CUCM for the gateway to register and work with CUCM.
Please make sure that you have the right phone loads in SRST to get the features you need.
However Secure SRST product requires Cisco Unified Communications Manager Release 4.1(2) or later.
