AT&T 999-507-144 system manual A basic telephone connected to an Opti

FIGURE 5-1 A basic telephone connected to an OPTI

CONSIDERATIONS You can also use accessories with your MERLIN Plus system that work similarly to basic telephones. These accessories include auto-dial modems, facsimile machines, credit phones, answering telephones, manual dial modems, auto dialers, and answering machines. The following devices support these accessories.

●Off-Premises Telephone Interface (OPTI)— The OPTI is intended for Off-Premises Extensions (OPX). Your local telephone company provides facilities that will enable you to locate the OPX telephones across the country.

●Basic Telephone and Modem Interface (BTMI)— The BTMI is intended for on-premises telephones and accessories. You can connect to your MERLIN Plus system such accessories as auto-dial modems, facsimile machines, credit phones, and answering telephones. You do not need to use a MERLIN Plus system voice terminal with these accessories.

●General Purpose Adapter (GPA)— The GPA is intended for accessory equipment that you can connect to your MERLIN Plus voice terminal such as manual dial modems, auto dialers, and answering machines.

The GPA is also useful for cordless phones.

●Auiliary Jack (Aux Jack)— The AUX jack on the MERLIN Plus control unit is primarily intended to let you share Line A and/or E with the MERLIN Plus system. You can connect such devices as data devices and facsimile machines to the AUX jack.

5-66Section 5: Reference