Private Branch Exchange - Xerox LF8040.8045 User Manual

Modem
A modem converts digital computer signals into acoustic signals and vice versa. Analogue tel-
ephone lines transfer only acoustic signals, not digital signals (see Hard Modem, see Soft Mo-
dem).
MR
Modified Read (encoding process for faxes, see Encoding)
MRC
Modified Read Code (encoding process for faxes, see Encoding)
Outside Line Access Code
The outside line access code is the number or letter that must be dialled before the actual
telephone number on a telephone of a private branch exchange in order to establish a con-
nection to the public telephone network (see Private Branch Exchange).
PABX/PBX
Private Automatic Branch Exchange
Parallel Connection
see Additional Devices
Plug'n'Print Card
Smart card used to set the toner level memory to full after installing new toner cartridges.
Polling
see Fax Polling

Private Branch Exchange

Private branch exchanges are common in larger companies. Even private ISDN systems can
be branch exchanges. To establish a connection to the public telephone network from a pri-
vate branch exchange, one must dial a number or press a key before the actual telephone
number; in most cases this is zero (see Outside Line Access Code).
PSTN
Public Switched Telephone Network
Pulse Dialling
A dialling process that is used in older telephone networks. You hear a clicking for each
number dialled (see Tone Dialling).
Glossary · Modem ¦ 81