CCMCIP stands for "Cisco CallManager Cisco Ip Phone service". This is a service running on Cisco CallManager (CUCM) servers. This service provides a HTTP interface for external applications (such as Cisco Phone Designer, Cisco Click2Call widget, etc.) to retrieve phone configuration from CUCM.
CUPC 8 use a new architecture called CSF (Common Service Framework). CSF provides a common library for different Cisco applications such as CUCIMOC, CUPC 8, etc. CSF is like the building blocks for Unified Communication applications. So applications can use those building blocks for different features without building everything from scratch.
Different applications has different ways to work. For example, CUCIMOC does not require a CUPS server. Because of that, CUCIMOC needs to retrieve phone configuration from CUCM. So it'll use CCMCIP service (via CSF). In contrast, CUPC requires a CUPS server. CUPS server synchronize all configuration from CUCM. Technically speaking, CUPC can retrieve phone configuration from CUPS (that's the way CUPC 7 and prior versions did). CUPC 8 was the first CUPC version that utilize CSF. To save some development time, they decided to mimic the behavior of CUCIMOC to retrieve phone configuration from CUCM. This introduced additional complexity in configuration (which indeed not necessary).
While I was working for Cisco, I suggested developers to eliminate the dependency of CCMCIP and use CUPS for configuration retrieval (which is the good old ways of CUPC 7). They verbally agreed. But I don't know if it'll actually happen since I no longer work for Cisco.
Hope this helps!
Michael
http://htluo.blogspot.com
