Dear Bloggers,
Today’s topic is going to be the desktop phone control from Cisco Personal Communicator Client, CUPC, via CTI and its configuration both in CUPS and CUCM.
As many of you are aware of, the CUCP’s CTI phone control is performed directly from the presence client itself via CTI/QBE interface, in other words the CUCP talks to the CUCM CTI Service to control the designated desktop phone, there’s no intervention of the CUPS in the process.
First of all, perform the basic integration between CUCM and CUPS (this configuration assumes no DNS servers are in the network):
- Add the CUPS as an application server in CUCM ->System ->Application Server menu
- Assign Presence capabilities to the end user (Enable CUP and CUPC use) in CUCM ->System ->Licensing -> Capabilities Assignment
- Run the CUPS post installation setup, you can use the CUCM Admin user as the AXL user required for this setup
- Change the presence server name to IP Address in the CUPS System-> Topology menu
- Configure the Cisco UP SIP Proxy service parameter and set the domain name, go to CUPS System-> Service Parameter
- Start all the CUPS services from the Cisco Unified Serviceability-> Tools-> Service Activation Menu
- Reboot the presence server for the name change to take effect
Now, let’s configure the CTI control config specifics:
- In CUCM end user-> assign device configuration, associate the corresponding device to the user, and very important but sometimes forgotten, assign the end user to the Standard CTI Enable user group
- Also in the CUCM end user configuration, assign the end user primary extension in the Directory Number Associations section
- Make sure “Allow Control of Device from CTI” is checked in the regarding phone device and line configuration
- In CUPS-> Application-> Cisco Unified Personal Communicator-> User Settings Menu, assign the TCP CTI Gateway Profile (automatically created during the CUPS synchronization with CUCM) for the user
- Finally, log into the CUPC and control your phone desktop, you should see a window similar to this:
Sometimes a restart of CUCM CTIManager service and CUPS Services are needed in order to get CTI control working properly from CUPC
Well, remember to be very specific in your configurations, you might be asking why I didn’t mention SIP trunk configuration, device line end user association, etc. My purpose here was only to configure CTI phone control via CUPC and not to enable presence features. This approach might help you to understand every piece of CUPS, save very valuable time in your lab exam and configure exactly what you are asked for.
Try this at home!!!
Otto Sanchez
CCIE #25592 (Voice)
Support Engineer – IPexpert, Inc.
URL: http://www.IPexpert.com


