Cisco CallManager supports the SIP protocol on the following Cisco IP Phone models:
•Cisco IP Phone 7970/71 ...
The administrator uses the Cisco CallManager Administration Phone Configuration window to configure an IP Phone for SCCP or SIP. If SIP is chosen, additional Cisco CallManager Administration configuration windows get used to configure the SIP protocol; for example, SIP Profile Configuration. See Table 43-6 for configuration requirements. For information on SIP Profiles and SIP Dial Rules, see SIP Dial Rules Configuration and SIP Profile Configuration in the Cisco CallManager Administration Guide.