Citel 3000 Guida Utente
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EXTender 3000 System Administrator’s Guide (Definity)
Glossary
Glossary
B
Baud Rate
The speed in Kbps at which digital data can be transmitted.
The speed in Kbps at which digital data can be transmitted.
C
CRC – Cyclical Redundancy Check
A process used to check the integrity of a block of data.
A process used to check the integrity of a block of data.
COD - Call On Demand mode
A feature of NEC ISDN Dterm EXTender Plus System, that disconnects the ISDN connection between the
Office and Remote Modules when there is no activity and reconnects the modules when activity occurs.
A feature of NEC ISDN Dterm EXTender Plus System, that disconnects the ISDN connection between the
Office and Remote Modules when there is no activity and reconnects the modules when activity occurs.
D
DCD – Data Carrier Detect
A signal from the DCE (modem or printer) to the DTE (typically your PC), indicating the modem is receiv-
ing a carrier signal from the DCE at the other end of the telephone circuit.
A signal from the DCE (modem or printer) to the DTE (typically your PC), indicating the modem is receiv-
ing a carrier signal from the DCE at the other end of the telephone circuit.
Dedicated Subscriber Lines
Communication lines (usually twisted pair) that are used to connect central site telephone equipment (such
as a PBX) to the Central Office. Also referred to as direct lines.
Communication lines (usually twisted pair) that are used to connect central site telephone equipment (such
as a PBX) to the Central Office. Also referred to as direct lines.
Dial Line
A telephone line that is part of the Public Switched Telephone Network and is accessed through the NEC
ISDN Dterm EXTender Plus automatic dial-up function.
A telephone line that is part of the Public Switched Telephone Network and is accessed through the NEC
ISDN Dterm EXTender Plus automatic dial-up function.
Direct Line
A dedicated circuit or private leased line.
A dedicated circuit or private leased line.
Directory Number
A Directory Number (DN) is the number programmed into the Office and Remote Modules used to dial the
modules and any equipment connected to them. There are two Directory Numbers for each module, one to
dial the module and one to dial the PC, server, or fax machine, analog modem, or analog telephone con-
nected to the module.
A Directory Number (DN) is the number programmed into the Office and Remote Modules used to dial the
modules and any equipment connected to them. There are two Directory Numbers for each module, one to
dial the module and one to dial the PC, server, or fax machine, analog modem, or analog telephone con-
nected to the module.
DTE speed
The speed at which the COM1 serial port runs.
The speed at which the COM1 serial port runs.
DTR – Data Terminal Ready
A control signal sent from the DTE to the DCE that indicates that the DTE is powered on and ready to com-
municate. DTR can also be used for hardware flow control.
A control signal sent from the DTE to the DCE that indicates that the DTE is powered on and ready to com-
municate. DTR can also be used for hardware flow control.