Installing The Analog Terminal Interface - Comdial G0408 Manual

Digital Telephone System
2.18.2

Installing The Analog Terminal Interface

Introducing The Analog Terminal Interface
The ATI-D is a multipurpose, on-premise accessory for the digital telephone system. It has dual
circuits that provide the following features:
• INDUSTRY-STANDARD TELEPHONE (IST) INTERFACE—This feature adapts most
industry-standard telephone (IST) devices to the digital telephone system. The ATI-D will
accept both tone (DTMF) and pulse (rotary) dialing from these devices.
• SYSTEM INTERCONNECTION—This feature allows an installer to connect two digital
telephone systems to each other using two ATI-Ds and on-premise wiring. When
interconnected, either telephone system treats the other telephone system as an IST device.
The two telephone systems are not integrated together and do not share features.
• MODEM ADAPTER—This feature allows the flow of switched data between a data source
and a data receiver through the digital telephone system.
• VOICE MAIL/ANSWERING MACHINE INTERFACE—This feature allows an installer
to connect voice mail systems and automated answering devices to the digital telephone
system.
The ATI-D by itself does not support any off-premise service. Never connect the ATI-D to a
telephone company-supplied line unless you have first installed an acceptable OPX long loop
adapter.
The ATI-D is housed in a self-contained metal enclosure that can be wall mounted if desired.
The ATI-D is powered by the digital telephone system through the station port connections and
employs an internal ringing generator to generate a ringing signal for an IST. Dual, high-quality,
low-loss, balanced, telephone transmission circuitry supports two IST inputs.
One 2-pair cable (four-wire) connects the ATI-D to two common equipment station ports. A
single pair of wires connects the external analog IST equipment to the ATI-D. Modular
connectors are provided to allow quick connections.
Each ATI-D circuit drives a load with a maximum ringer equivalence number (REN) of 2.0, thus
allowing more than one IST connection at each interface input. Check the REN number of the
connected IST equipment so as not to exceed the capacity of the ATI-D. Improper operation
may result if the REN maximum of the ATI-D is exceeded.
The ATI-D supports a wide variety of IST equipment such as 500 and 2500-type telephones,
cordless telephones, voice mail systems, answering machines, FAX machines, and data modems.
2 – 58 Installing The DSU
CAUTION
IMI66–107