Cisco Cisco Computer Telephony Integration Option 8.5 Reference Guide

Depending upon the particular ACD’s capabilities and tie-line configuration, some ACDs may be set up 
to effect call transfers using the post route and translation route features previously described. In this 
case, the call context is preserved by being sent through Unified ICM via the route request and 
translation route mechanisms to the remote PG, and is thus available to the CTI Client, if any, associated 
with the destination device.

Like call transfers, call conferences are handled differently by different types of ACDs and may involve 
the creation of several calls that are all linked together.

The CTI Interface uses TCP/IP Ethernet for network connectivity to the CTI Server. You can use 
multi-protocol IP routers to provide connectivity to CTI clients on other types of LANs. You can use the 
Ethernet interface used for CTI client communication with the CTI Server for other purposes, such as 
the PG’s public network interface; a dedicated interface is not required. 

You must not use the PG private network for CTI communication.

In simplex configurations, there is one CTI Server on the local network with the CTI clients. In duplex 
configurations, two CTI Servers are present. There may be other equipment (for example, ACDs) on the 
network as well. 

 shows a typical duplex configuration.