# Checking compatibility for My Computer and Other Phone modes

Important

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`.
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 can connect to Communication Manager at a time. Each IP station can consist of Avaya one-X Agent, Avaya IP Softphone, or IP telephone sets or all.

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 ensure that the Limit field of the IP_Agent and IP_Supv Product IDs match the number of licenses you purchased for Avaya one-X Agent.

Parent topic: Configuring the My Computer and Other Phone settings
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