# Checking compatibility for the Desk Phone mode

Use the following steps to ensure that your Communication Manager supports the Desk Phone setting (IP Telephone or Avaya Telephone-IP Telephone) for use of Avaya one-X Agent in your contact center.
Note

If the settings of your Communication Manager do not conform with the steps in this procedure, contact the Avaya customer support services to purchase the appropriate options or configuration for your Communication Manager before using Avaya one-X Agent.

1. Log on to Communication Manager to gain access to the Communication Manager administration interface.

   Alternatively, you can use Station Administration Terminal (SAT) to gain access to the Communication Manager administration interface.

2. On the administration screen, in the text input field, enter `display system-parameters customer-options`.

   The system displays page 1 of the system-parameters customer-options form.

3. Navigate to page 2 of the customer-options form, and ensure that the Maximum Concurrently Registered IP Stations field is set to a number greater than zero.

   The number specified in the Maximum Concurrently Registered IP Stations field represents the total number of IP stations that you connect to Communication Manager at one time. Each IP station can consist of Avaya one-X Agent, Avaya IP Softphone, and IP telephone sets.

4. Navigate to page 4 of the customer-options form, and ensure that the IP Stations field is set to `y`.
5. Navigate to page 10 of the customer-options form, and check the following:

   Option | Description
   --- | ---
   For Avaya Telephone-IP configuration | Ensure that the Limit field for the AgentSC Product ID is set to the number of licenses you purchased for Avaya one-X Agent. Note You can use AgentSC for the ACD feature in the Desk Phone mode only.
   For IP Telephone configuration | Verify that the system sets the number of licenses for the IP_AGENT Product ID match the number of licenses you purchased for Avaya one-X Agent.

Parent topic: Configuring the Desk Phone settings
©2011, Avaya Inc. All Rights Reserved.