3Com 3C10200 NBX Installation Guide - Page 143

5 ANALOG DEVICES This chapter tells you how to install and verify the successful installation of these analog devices: ■ Analog Terminal Card ■ Analog Terminal Adapter ■ The ATA port on a V3000 WARNING: The 3Com Analog Terminal Adapter is intended for connection only on internal LANs. Do not install it outside of buildings. Do not connect it to any networking device outside of the building in which the telephones are located. A four-port Analog Terminal Card (ATC), a single-port Analog Terminal Adapter (ATA), or the ATA port on a V3000 allows analog (2500-series compliant) devices, such as cordless telephones and fax machines, to operate with NBX systems. Certain limitations apply to a phone connected through an analog port because of the differences between an analog device and a 3Com Telephone: ■ A user cannot forward calls to voice mail by enabling a button such as the FWD MAIL button on the 3Com Business Telephone. You can use a feature code to have the system automatically transfer calls to voice mail if your analog telephone is not answered. ■ An analog telephone can make or answer only one call. If the analog telephone is in use, an incoming call automatically goes to voice mail. However, if you have purchased the Call Waiting service from your telephone company, and you have an incoming analog telephone line mapped directly to your analog telephone, you can press the hook switch to toggle back and forth between two calls.