ZETRON 640 DAPT XTRA, Руководство по установке и ремонту

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Introduction
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Remote Transmitter Control
The Model 640 is equipped with a modem and tone encoder to remotely control transmitters over
a radio or wireline link The Model 640 can control any transmitter capable of decoding analog
Motorola PURC

tones. A Zetron Model 66 Transmitter can be added to control other types of
transmitters that do not use the PURC

protocol.
Remote control is useful when the transmitter cannot be colocated with the paging terminal or
when pages are being sent to transmitters in several zones. The Model 640 is capable of sending
pages to up to 16 transmitter zones. In addition, pages can be repeated up to four times with
different zone addresses, to extend the coverage area without purchasing costly simulcast
equipment.
Easy System Management
The Model 640 provides several features that simplify system management. Three separate soft-
ware programs come with the paging terminal. Each is installed on the office computer or is resi-
dent on the paging terminal RAM drive. The software modules are used to view and edit all
aspects of the Model 640’s operation.
MCU is the software package provided for office computer communications with the paging
terminal. It allows the system operator to monitor system traffic (log files) and view statistics and
call counts. In addition, the ZLINK portion of MCU enables the user to link into the terminal and
execute various commands. Some of the most useful operations include generating test pages and
viewing trunk card configuration and activity.
The Model 640 subscriber database is stored in the paging terminal and can be accessed by way
of MCU or through another communications program, such as ProComm®. It configures the all
system and user operating parameters. The databases determine how the paging terminal commu-
nicates with the telco and the transmission equipment.
Wide-Area Networking with TNPP or TAP
The Model 640 provides two optional methods of increasing the paging coverage area. This
ensures that customers can travel outside their local area and remain accessible. TNPP (Telocator
Network Paging Protocol) paging is a popular means of passing pages over a wide region. When
the Model 640 is equipped with the TNPP option, it can exchange tone-only and alphanumeric
display pages with other paging terminals. Pages are passed through the TNPP network with a
variety of media, including dedicated wireline, packet radio, and satellite downlink. TAP
(Telocator Alphanumeric Protocol) is an economical alternative to TNPP networking. It provides
many of the same features, but without the expense of an RF transmission media. TAP sends
pages from the Model 640 to other terminals on a dial-up phone connection by way of modem.
Other Features
The Model 640 has many other useful features, including:
•
1,500 subscriber capacity
•
Two telephone interfaces (expandable to four)