Contact your service provider
In many cases, the service provider will make available
descriptions of its services and instructions for using
features, such as the following:
• Voice mail and voice privacy
• Call waiting, call forwarding, and caller ID
• Messaging
• News and information services
• Selected Internet services
Service providers may differ in their support of features.
Before you sign up with a service provider, make sure that
the service provider supports the features that you need.