AC is dropped so if you're using it plan accordingly by either also dropping it or look into the CUxAC suite that is the replacement.

Supported phones are listed here:

Table 19     Default Loads for Cisco Unified Communications Manager Release  8.x

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/compat/ccmcompmatr.html#wp186410

This should give you the basics, make sure you have read the pre-requisites for caller ID MGCP with FXO.

Configure MGCP Gateway and FXO/FXS Ports on a   Cisco CallManager Server

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_tech_note09186a008017825e.shtml

Configuring Cisco CallManager with IOS MGCP  Gateways (Analog FXO, FXS Ports)

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_tech_note09186a008009428e.shtml

HTH

java

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