ZETRON 640 DAPT XTRA, Руководство по установке и ремонту

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Glossar
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Term Definition
Packet
A page or set of pages sent between TNPP nodes. Each packet can
contain several blocks of data, up to 1024 total characters. A block
contains one page and identifies parameters such as the page type, the
subscriber ID or capcode, the origination and destination nodes, and
the message text.
Packet Modem
A modem designed for sending TNPP page packets. The packet
modem is usually dedicated to TNPP paging applications.
Pager
A small portable radio receiver that notifies the subscriber almost
immediately when someone has called them. Most pagers beep or
vibrate to signal a call.
Pager Definition
A database that defines how a pager should function. Each format
(Golay, POCSAG, etc.) has its own set of parameters that make up the
database. Most formats include settings like function codes, display
message autoformatting, and alert signal timing.
Paging Format
The parameters that define how a pager communicates with the
paging terminal. The format designates specialized codes and carriers
that are compatible with the pager. Some of the commonly used
formats are POCSAG, Golay, and FLEX.
Paging Terminal
The processing unit that receives incoming paging data (by way of
phone line or RF/µwave link), encodes it, and passes it to the paging
subscriber. The paging terminal defines who is paged (subscribers),
when they are paged (priority and repeats), where they are paged
(transmitter coverage zones), how they are paged (tone, voice, display,
etc.), and what they are paged with (pager format).
Password
Any security word (letters or numbers) that is required for access to a
specific part of the paging terminal operation. The Model 640 allows
password programming to access ZLINK communications, specific
databases (by way of MCU privileges), individual trunks and
subscribers. All passwords can be bypassed - that is, made inoperable.
PBX
Private Branch Exchange. A private telephone network switch that
connects lines at a single site to the public switched network.
Peripheral
Motherboard
The secondary processor board in the Model 640 that interfaces the
radio station and trunk card portions of the paging terminal to the
main processor. The peripheral board has an RJ21 connector that
provides signals for the telco and transmission equipment interface.
Pin-out
A description of each signal lead for an interface connector or cable.
The pin-out identifies each signal by name, number, and function so
that the proper connections can be made between equipment.