Talkswitch 24-CA - Manual (Page 235)

G L O S S A R Y 223
digital signals for data storage or transmission over digital lines. The digital
signal is converted back to analog waves that you can hear.
DISA (call bridge)
Direct Inward System Access. Allows you to make long-distance calls from
anywhere in the world over your PBX using an access number and an
authorization code.
Distinctive ring
A service provided by some telephone companies to distinguish two different
telephone numbers using the same telephone line (i.e. fax machine).
TalkSwitch can detect one, two and three ring bursts per ringing cycle to
provide different handling for incoming calls.
Driver
The software that controls a device (printer, disk drive, modem, etc.). The
driver acts as a translator between the device and the programs that
use it.
DTMF
Dual-tone Multi-frequency. It is the system used by touchtone telephones.
DTMF assigns a specific frequency (tone) to each key so that it can be
identified by a microprocessor.
Dual-line telephone
A telephone allowing you to make and receive calls on two separate
telephone lines.
Extension
See Local extension or Remote extension.
FCC
Federal Communications Commission. The FCC is the federal regulatory
agency for the United States, responsible for the regulation of interstate and
international communications by radio, television, wire, satellite and cable.
Firmware
Firmware is a combination of software and hardware. Microchips that have
data or programs recorded on them are called firmware.
Flash button
A button on your telephone. Pressing the Flash button has the same effect
as pressing the Link button or pressing and releasing the hang-up hook on a
telephone. All of these actions send a signal to TalkSwitch to put calls on/off
hold.