We are interested in purchasing the 9900 series video IP phones but I am concerned that they only work with SIP protocol. We use SCCP in our call manager and we are running CM 5.1(2). I see we have the option to install SIP phones but could we install one of these IP phones in our environment? What is required to have this IP phone work for us?
Please let me know if you do.
Hope all is well my friend
Here are some answers from Kirk @ Cisco (from a great Q&A)
3) Am I correct in reading this is a SIP only phone and that SCCP is not supported?
That is correct.
5) It looks like these are just supported on Communications Manager 7.1(3) or later. I assume they will work in SRST as well? if so what IOS version / SRST version would be required to support these phones (or does it matter?)
Initial support is on Cisco Unified Communications Manager and Business Edition System Release 7.1(3) or later. SRST 7.1 IOS 12.4 (24)T) is the minimum release that will support the IP Phone 8900 and 9900 Series.
Hope this helps!