a telephone switch located on a customer's premises that does not require an operator and is typically used in smaller organizations
a telephone system for small businesses
Telecommunications system with multibutton telephone sets on which more than one outside line terminates, allowing several people to answer or use more than one line.
Small telephone system where multiple exchange lines can be presented on each telephone. Key systems usually use telephones/terminals that are exclusively designed for a particular system.
Phone systems typically found in small businesses where outside calling is more important than inside. Each phone has a multiple line appearance to the central office. A user gets a line by depressing a key.
A small-business phone system with multiple phone lines. Key systems are typically limited to about four phone lines. All phone lines are available through all of the telephone sets; special sets are required to work with key systems. Versatureâ€(tm)s hosted communications services are an excellent, cost-effective alternative to key systems.
telephone system in which multiple phones share a set number of outside lines and a currently open line must be selected by pushing the corresponding button on the phone.
an office telephone system where each "outside" line appears as a button on each telephone set. An incoming call will blink the corresponding line button on each set.
A small type of phone system. Key systems typically use buttons or keys to access different outside lines.
A switching system in which the phones have multiple buttons that permit the user to directly select incoming or outgoing lines. Key systems can typically support fewer users than PBXs, and their features are more limited.
This is a phone system programmed to show one button on a phone per one line connection from the phone company.
The Key System (or Key Route) was a privately owned company which provided mass transit in the cities of Oakland, Berkeley, Emeryville, Piedmont, San Leandro, Richmond, Albany and El Cerrito in the eastern San Francisco Bay Area from 1903 until 1960 when the system was sold to a newly formed public agency, AC Transit.
