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

When limiting the number of calls per application in Unified CCX applications, 
you need to take care to coordinate the JTAPI trigger Maximum Number of 
Sessions limit with the Media Group session limit.

For example, say you are using Unified CCX for queuing calls and set the JTAPI 
trigger Maximum Number of Sessions limit on Unified CCX to 4 and set the Call 
Forward and Pickup Settings to send the fifth call to voice mail. To make this 
happen, you must configure the Media Group Session Limit to the identical 
setting (4). This will cause Unified CM to forward the next incoming call to voice 
mail (once the CTI New Call Accept timer setting expires).

The drawback of this approach is that you need to define more media groups for 
each application and you cannot share the same set of media groups across 
multiple applications.

The Cisco CRS server and Unified CM communicate using the JTAPI Client. 
CRS installation automatically detects the JTAPI Client used by the specified 
Unified CM server and installs this JTAPI Client on the CRS server.

If you change versions of Unified CM after installing CRS, Unified CM may use 
a different version of the JTAPI Client than the version used by the CRS server. 
The JTAPI Client Update tool enables you to update the JTAPI Client on the CRS 
server to the same JTAPI Client version used by Unified CM.

The JTAPI Client Update tool is installed by default in the C:\Program 
Files\wfavvid directory and is accessible from the Windows Start menu under 
Programs > Cisco CRS Administrator.

You do not need to be logged into CRS Administration to update the 
JTAPI Client. 

To update the JTAPI Client, complete the following steps.

From the Windows Start menu, choose Programs > Cisco CRS Administrator.

Choose JTAPI Client Update.