![background image](http://html1.mh-extra.com/html/zetron/640-dapt-xtra/640-dapt-xtra_installation-and-repair-manual_3549374153.webp)
Glossary
025-9416
141
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.
Summary of Contents for 640 DAPT XTRA
Page 2: ......
Page 6: ...Statements vi 025 9416...
Page 20: ...Introduction 8 025 9416...
Page 26: ...Specifications 14 025 9416...
Page 96: ...Installation 84 025 9416...
Page 126: ...Optional Equipment Installation 114 025 9416...
Page 134: ...Voice Prompts 122 025 9416...
Page 174: ...Parts Lists and Schematics 162 025 9416 Schematic...
Page 175: ...Parts Lists and Schematics 025 9416 163...
Page 176: ...Parts Lists and Schematics 164 025 9416...
Page 177: ...Parts Lists and Schematics 025 9416 165...
Page 178: ...Parts Lists and Schematics 166 025 9416...
Page 179: ...Parts Lists and Schematics 025 9416 167...
Page 180: ...Parts Lists and Schematics 168 025 9416...
Page 181: ...Parts Lists and Schematics 025 9416 169...
Page 182: ...Parts Lists and Schematics 170 025 9416 Silkscreen...
Page 185: ...Parts Lists and Schematics 025 9416 173 Schematic...
Page 186: ...Parts Lists and Schematics 174 025 9416...
Page 187: ...Parts Lists and Schematics 025 9416 175...
Page 188: ...Parts Lists and Schematics 176 025 9416...
Page 189: ...Parts Lists and Schematics 025 9416 177...
Page 190: ...Parts Lists and Schematics 178 025 9416 Silkscreen...
Page 193: ...Parts Lists and Schematics 025 9416 181 Schematic...
Page 194: ...Parts Lists and Schematics 182 025 9416...
Page 195: ...Parts Lists and Schematics 025 9416 183...
Page 196: ...Parts Lists and Schematics 184 025 9416 Silkscreen...
Page 198: ...Parts Lists and Schematics 186 025 9416 RAM Disk 702 9386B ROM Disk 702 9389B...
Page 199: ...Parts Lists and Schematics 025 9416 187 TNPP Interface 702 9362C 2...
Page 200: ...Parts Lists and Schematics 188 025 9416 Terminal Block Adapter 702 9470B...
Page 201: ...Parts Lists and Schematics 025 9416 189 CONFIGURATION DIAGRAMS Dual Trunk Telco DID 024 0076A...
Page 202: ...Parts Lists and Schematics 190 025 9416 Dual Trunk Telco End to End 024 0077A...
Page 203: ...Parts Lists and Schematics 025 9416 191 Dual Trunk Telco E M 024 0078A...
Page 204: ...Parts Lists and Schematics 192 025 9416 Dual Trunk Telco Ground Start 024 0079A...
Page 210: ...025 9416...