By default, customer service representatives can edit customer phone numbers in the Responder web browser using the Customer Call screen. You can edit a setting in the web.config file to make customer phone numbers read only.

 To set the customer phone number fields to be read only, follow the steps outlined below. 

1. Open the Web.config file. This file is installed here: C:\Inetpub\wwwroot\Responder.
2. Look for the following XML:

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<add key="customerInput.allowRxCustomerEdit" value="true" />

3. Set the value attribute to False.
4. Save and close web.config.