Nat PTA12-100, Installation And Operation Manual

Page: 13 / 52

SM55 Rev.
4
.00 PTA12-100 POTS Telephone Adapter with Display Manual
Section 1 Description
1.1 Introduction
This manual contains information on the PTA12-100 POTS Telephone Adapter.
Information in this section consists of purpose of equipment, features and specifications.
1.2 General
The PTA12-100 POTS Telephone Adapter is a keypad control and display unit for
airborne telephone system applications. The PTA12-100 connects to a telephone
system transceiver by a two-wire POTS (Plain Old Telephone Service) interface. The
PTA12-100 can be connected to the aircraft audio controller(s) or directly to an aviation
headset/handset.
Note : The PTA12-100 is designed to meet standard North American PSTN
requirements, but it is not recommended or approved for landline applications.
1.2.1 Features
The PTA12-100 POTS Telephone Adapter is a compact Dzus mounted POTS
telephone interface with a keypad and display. Many of the PTA12-100 functions are
controlled by a microcontroller.
The functions of the PTA12-100 include: speech audio circuits, hook switch, ring
indication, flash, hold, redial, serial data communications, backlighting, display, speed
dial, Globalstar™ satcom status, DTMF tone generation and ringer audio generate. The
speech audio circuits include a mic input amplifier and a phones output amplifier with
front panel volume control.
Hook switch control and indication is provided on the front panel. The hook switch may
be controlled and its status viewed from a location remote to the PTA12-100 front panel.
Ring indication is also provided on the front panel with a flashing green LED. A flash key
is provided on the front panel to interrupt the hook. A hold key on the front panel mutes
all audio to and from the headset and is indicated by a green LED. A redial key on the
front panel automatically redials the last number called.
A two-wire POTS port achieves the interface to the satcom system transceiver. A serial
port allows for data communications to satcom systems.
The front panel keypad has backlighting provided.
Sep 21, 2004 Page 1-1
ENG-FORM: 800-0108.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.