Siemens 300 Series, 600 Series manual G-2 ROLMphone 300/600 User Guide

D

DCO (Data Communication Option). An option for ROLMphone 600 series telephones that provides an access to the data and voice telephony features of the telephone.

dedicated trunk. A trunk that rings directly through to a specific internal telephone, hunt group, or distribution group.

digital phone. A telephone that uses digital signals to communicate with a business telephone system.

digital signal. The representation of data by discrete values as binary digits (in contrast to analog, which is continuous).

DND (Do Not Disturb). This feature allows a telephone user to block incoming calls to his or her telephone by preventing the telephone from ringing.

E

extension. A unique number assigned to a line appearing on one or more telephones that is connected to a CBX. Depending upon how the CBX is configured, an extension number can be from one to six digits long.

F

faceplate. A paper template that fits around the keys of a telephone in order to label the keys with the features or lines assigned to them.

faceplate lens. A clear plastic panel that fits over the telephone faceplate to protect it.

feature access code. The key pad sequence dialed by a user to access a telephone or system feature.

H

handset. A hand-held unit on a telephone that has both a microphone and a speaker.

headset. A device with a microphone and a speaker that fits over a user’s head and eliminates the need to use a handset.

hold. The status of a line when the connected parties are temporarily disconnected from each other without releasing the line.

G–2ROLMphone 300/600 User Guide