Cisco Cisco Unified IP Interactive Voice Response (IVR) 8.0(1) Administrator's Guide

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Cisco Unified CCX Administration Guide, Release 8.0(1)
 
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Provisioning Telephony and Media
Resource provisioning information for the Unified CCX telephony and media 
subsystems are provided in the following sections:
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About Unified CCX Telephony and Media
The Unified CCX system uses a telephony resource called Computer Telephony 
Interface (CTI) ports to accept incoming calls and to place outbound calls. The 
Unified CCX system uses the following media resources to provide interactive 
services for calls:
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Unified CM Telephony—The Unified CCX Engine uses the Unified CM 
Telephony subsystem to send and receive calls from the Unified CM by 
interfacing with the CTI Manager through the Unified CM Telephony client.
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Unified CME Telephony—The Unified CCX Engine uses the Unified CME 
Telephony subsystem to open a logical session with Unified CME. This 
session verifies provider authentication, periodically exchanges heartbeats, 
and monitors Unified CME availability after successful authentication.