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-toneMulti-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.

G L O S S A R Y

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Talkswitch 48-CA/CVA, 24-CA manual Distinctive ring, Driver, Dual-line telephone, Extension, Firmware, Flash button