CSIS 160
Josh Ancel
Chapter 9
Terms
- Modem
– the black box at each end of a nonvoice data communications line.
- Acoustical
Coupling – a way to send data without using an electrical connection.
It use’s the same tones a
telephone uses in order to transmit data.
- KTS
– Key Telephone Systems are
devices used in large companies for their telephone system. Instead
of one line coming into the
building and everyone share, they put a
trunk line and run multiple calls. It also consist of
- PBX
– Private Branch Exchange’s
are switching systems that allow calls to be placed either in a
building or in a neighborhood.(In the old days) Now a days we use
PAX’s or CBX’s. (For computerized
PBX’s)
- Stored
Program Control (SPC) – Is a feature that stores information on each
subscriber and gives a whole slew of features. It also has a great amount
of reliability because it uses self monitoring system that alerts when
there is a malfunction.
- Centrex
CO/CW – This is where the use of an operator is limited to information
only. All calls bypass the main operator unless specified by the caller.
- CAAR
– Central Answer and Record – A version of voice mail if not known as
voice mail. It allows messages to be taken when the recipient is not
present. Later they can pick up the message by calling into the central
office.
- Most
Economical Route Selection (MERS) – This device choose the most
economical route for the call to be switched to. Depending on where the
call is going and what lines are available.
- MDR
– Message Detail Recording – a devise used for management purposes. It
records callers name, number, address,…etc.