1
6 0
T A L K S W I T C H U S E R G U I D E • U K & I R E L A N D
Busy Tone
Tone used to indicate that the
called party is busy.
Call Back
A TalkSwitch feature which,
once activated, instructs
TalkSwitch to call you back at a
preset Out-of-Office telephone
number. You can then access
TalkSwitch’s DISA — Direct
Inward System Access feature.
TalkSwitch offers two ways to
activate Call Back — Prompted
and Auto.
Call Forward
A TalkSwitch feature which
forwards calls to one of 8 or
more Remote Extensions.
Caller ID
A service provided by
telephone companies which
transmits information about
incoming calls (callers name
and telephone number).
Call Waiting
A service provided by
telephone companies which
allows you to accept a second
incoming call on a telephone
line that is already in use. Call
Waiting allows you to ‘toggle’
from one caller to the other.
Centrex/Plexar
Central Office Exchange
Service. A type of PBX service
offered by the telephone
company on a ‘pay per service’
basis. All call switching occurs
at a local telephone station
instead of a company’s
premises; Service may not be
available from local telephone
company.
CNG
A ‘chirping’ tone emitted by
fax modems and most fax
machines to initiate contact
with another fax machine/
modem.
COM Port
Communications Port. Internal
virtual pathways used to
transmit data to and from a
PC’s exterior Serial Port and
software running on the PC.
The majority of PCs have four
Com Ports: COM1, COM2, COM3,
and COM4. Most software
programs gain access to the
COM Ports via system interrupts
(IRQs) and only two IRQs are
reserved for the four ports. If
you have two devices using
COM Ports that share an IRQ,
you cannot use the devices
simultaneously. Typically,
COM1 and COM3 use IRQ4,
while COM2 and COM4 use
IRQ3.
Communications Software
Software that makes it possible
to send and receive data over
telephone lines via modems.
Compression (Data)
Storing information in a format
that requires less space than
usual. Compression saves
transmission time, capacity
and storage space.
Computer Telephony Integration
Refers to systems that enable a
computer to act as a call
