Panasonic KX-TS4200B 4-Line Phone

Caller ID (CID)
The "called from" name and number that is transmitted and displayed over telephone lines. The caller has the ability to block delivery of this information by dialing 67 before dialing the destination number.

Speakerphone
A phone that has a microphone and a speaker that allows you to talk to your caller without lifting the handset. This is best used in private offices and when multi party conferencing is required. Never use a speakerphone in a noisy environment.

Voicemail
The business feature that gives every employee a voice mailbox used to take messages while they are busy or away from their office. They typically also feature an Automated Attendant which answers acts as a receptionist to answer company calls and distribute them to the correct individual or department. Voicemail is an essential piece to a professional office, but must be managed to assure proper phone etiquette is maintained.