Which of the following is true of both the Cisco Unified Personal Communicator and the Cisco Unified Client Services Framework phone types in UCM?

A. Device names must begin with UPC.

B. Device names can be no longer than 15 characters.

C. Device names can contain uppercase letters only.
D. Device names can contain numbers and uppercase letters only.
E. Device names have no naming convention.

Explanation:
Softphone device names can be no longer than 15 characters for both the Cisco Unified Personal Communicator and the Cisco Unified Client Services Framework phone types in Cisco Unified Communications Manager (UCM). A softphone is software that behaves like a phone, enabling a user to have voice conversations over a typical workstation network connection. Softphone mode is an operational mode that Unified Personal Communicator uses to act as a softphone. In order to use Unified Personal Communicator as a softphone with UCM, you must add a device to UCM that enables the registration of Unified Personal Communicator in softphone mode.

The Cisco Unified Personal Communicator device type naming convention requires that the name begin with the letters UPC and be derived from the UCM user name. The Cisco Unified Client Services Framework devicetype name has no such naming convention. However, neither the Cisco Unified Personal Communicator device type name nor the Cisco Unified Client Services Framework device type name can exceed 15 characters. In addition, the Cisco Unified Personal Communicator device type cannot contain characters other than uppercase letters and numbers. By contrast, Cisco Unified Client Services Framework device type names can contain uppercase letters, lowercase letters, and numbers.

For example, if you were to configure the user Joe Public with a UCM user name of jpublic, the softphonedevice name associated with the Cisco Unified PersonalCommunicator device type would be UPCJPUBLIC. Similarly, the user name of j_public or j.public would have an associated softphone device name of UPCJPUBLIC. If two UCM user names are similar enough to result in identical softphone device names, softphone registration problems can occur in UCM. Therefore, it is important to be aware of the Cisco Unified Personal Communicator naming convention when you are assigning user names and configuring softphone devices.

You can configure a softphone device in UCM by clicking Device > Phone > Add New in the UCM administrative graphical user interface (GUI) and selecting either Cisco Unified Personal Communicator or Cisco Unified Client Services Framework from the Phone Type dropdown field. You must configure the Phone Type field with Cisco Unified Personal Communicator if the user is using Unified Personal Communicator version 7.0. You must configure the Phone Type field with Cisco Unified Client Services Framework if the user is using Unified Personal Communicator version 8.0 or later.

Reference:
Cisco: Configuring Basic Features for Cisco Unified Personal Communicator: (Cisco Unified Personal Communicator Release 8.x) Guidelines for Configuring the Softphone Device Name