
Intercom Calls Your extension number allows other people to place intercom calls to you, without dialing any extra codes. And, because every endpoint in your telephone system is assigned an extension number, you can call other people in your system quickly and easily. NOTE: Ask your system administrator for a list of extensions. Placing Intercom Calls To place an intercom call: 1. With or without the handset lifted, dial an extension number. 2. If your call goes through handsfree to an endpoint’