Explanation
In Cisco Unified CCX Administration, when you add a Cisco Unified Communications Manager (CUCM) Telephony group, a CTI Route Point is created on the CUCM. A CTI Route Point is a virtual device that can receive multiple simultaneous calls and route them to a Cisco Unified CCX application by using the JTAPI protocol. A CUCM Telephony group defines the CUCM cluster, the JTAPI user, and the CTI Route Point that are associated with a Cisco Unified CCX system12 The other options are not correct:
CTI Ports: CTI Ports are virtual devices that can make or receive calls and are controlled by the JTAPI application. CTI Ports are not created when you add a CUCM Telephony group, but when you add a Cisco Unified CCX Call Control Group12 Cisco Unified CCX Call Control Group: A Cisco Unified CCX Call Control Group is a logical grouping of CTI Ports that are used by the Cisco Unified CCX system to make and receive calls. A Cisco Unified CCX Call Control Group is not created when you add a CUCM Telephony group, but when you configure the Cisco Unified CCX system parameters12 Cisco Unified Communications Manager Call Control Group: A Cisco Unified Communications Manager Call Control Group is a term that does not exist in the Cisco Unified CCX terminology.
References: 1: Cisco Unified Contact Center Express Administration Guide, Release 10.0(1) - Unified CM Configuration [Cisco Unified Contact Center Express] - Cisco 1 2: Cisco Unified Contact Center Express Design Guide, Release 10.0(1) - Unified CM Telephony Subsystem [Cisco Unified Contact Center Express] - Cisco 2