ZETRON 640 DAPT XTRA, Руководство по установке и ремонту

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Glossary
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Term Definition
Busy
An already-in-use condition in the radio transmission equipment or
phone line.
BUSY LED
A light on the front panel of the paging terminal that indicates when
the radio station is currently being used. This LED corresponds to the
busy input signal (pin #41) on the trunk and radio station interface
connector.
Buttset
A modified telephone designed for troubleshooting and repair of tele-
communications equipment.
Cable
An electrical interface comprised of one or more wires used to
transmit a current or signal.
Cable Ties
Small plastic fasteners included with the installation interface
assembly option. Cable ties are used to secure several wires together
in a neat, organized bundle.
CAN
A response from a TNPP paging encoder that a paging packet was
unsuccessfully received. The CANnot acknowledgment tells the
sending node that the packet is formatted or addressed incorrectly and
was not delivered.
Canned Messages
A Model 640 database that provides commonly used text phrases for
alphanumeric display pagers. Callers can piece together canned mess-
ages to send an alphanumeric page from a standard touch-tone phone.
Call Counts
A counter that records and increments the number of calls received by
each subscriber. The call counts are used for billing and for traffic
management.
Capacity
An average amount of traffic that a circuit can handle. The capacity is
given as a guide for maximum consistent load on a system.
Capcode
A pager “address” number that allows callers and the paging terminal
to identify the specific subscriber being contacted. It indicates the
format and duration of the signaling tones. The capcode is up to 8
characters long and is defined by the unique pager format (Golay,
POCSAG, 2-tone, etc.).
Carrier
A physical connection carrying more than one communication
channel.
Carrier Operated
Relay (COR)
A data input that determines when the transmission path is already
busy.
Carrier Detect (CD)
A data input that indicates when a modem connection has been estab-
lished with another computer.
Central Office (C.O.)
The telephone company’s circuits that connect a private network to a
public switched network.