Nortel BCM 3.7, Manual

Page: 921 / 1004

P 921
Programming Operations Guide
power cable
A cable that connects the Business Communications Manager base unit to a power source.
PPP
Point-to-point protocol (PPP) is a protocol for communication between two computers
using a serial interface, typically a personal computer connected to a server by a telephone
line. For example, your Internet server provider may provide you with a PPP connection
so that the provider's server can respond to your requests, pass them on to the Internet, and
forward your requested Internet responses back to you.
PPP is a full-duplex protocol that can be used on various physical media, including twisted
pair, fiber optic lines or satellite transmission. It uses a variation of High Speed Data Link
Control (HDLC) for packet encapsulation.
PPP can process synchronous as well as asynchronous communication. PPP can share a
line with other users and it has error detection.
pre-dial
A feature that allows you to enter a number and check it on your telephone display before
you lift the handset or select a line. The Business Communications Manager system dials
the number when you lift the receiver or select a line.
PRI
Primary Interface (PRI) ISDN lines use 23 B-channels (North America) and a D-channel
(23B+D). E1 PRI provides 30 B-channels and a D-channel (30B+D).
prime line
The line the system selects for your telephone when you lift the receiver, press the
handsfree button or use an external dialing feature. Assign a Prime Line to a telephone
under Line access. The default is the intercom button (I/C). (Services, Telephony Services,
System DNs)
prime set
A telephone designated as a Prime set provides backup answering for incoming calls on
external lines. The prime telephone for a line will ring for any unanswered calls on that
line. Assign a prime telephone to a line under Line XXX, Trunk Line data. (Services,
Telephony Services, Lines).
priority call
If you get a busy signal when you call a person in your office, you can interrupt that
person for an urgent call. Enable this feature for a telephone under Capabilities. Set the
intrusion level, which defines who can interrupt calls and whom you can interrupt under
Capabilities, Intrusion. (Services, Telephony Services, System DNs). (
FEATURE 69 )
Privacy
This feature determines if a system user can select a line in use at another telephone and
join an established call. Auto Privacy can be enabled under Line XX, Trunk Line data.
Users can turn this feature on and off during separate calls. (
FEATURE 83 )