ADTRAN IP 706 Administrator's Manual page 84

Appendix C. Glossary ADTRAN IP 700 Series Phone Administrator Guide
Idle state: Refers to the state when the phone is not in use and is not connected to an active call. In this
state, the LCD displays the idle screen.
IP Address: Internet Protocol Address. IP addresses are used by devices on a computer network to
uniquely identify themselves and communicate with other devices via Internet protocol.
Key system: The Key system is the type of phone system most often used by small businesses that do not
require the larger number of phone lines supported by a PBX system. Key systems have a line key
assigned for each outside line and separate buttons for internal calling, unlike the grouping of the PBX
systems.
LCD: Liquid Crystal Display. A display device made up of pixels in front of a light source or reflector.
The main screen on the IP phones is an LCD.
LED: Light Emitting Diode. Semiconductor device that emits narrow-spectrum light.
Line appearance: How the phone line appears and/or is labeled on the LCD on the IP phones.
Line keys: The keys located down the right and left sides of the LCD, next to each line appearance. Line
keys allow the use of different lines on the IP phones.
Link: The connection between the IP 706/IP 712 phone and the network or other devices.
Message Waiting Indicator (MWI): The LED that illuminates the Message function key that alerts the
user there are waiting voicemail messages.
MWI cadence: The rate at which the Message Waiting Indicator light blinks to indicate messages.
Navigation bar: The directional hard keys in the center of the IP phone face. They include the Menu,
Cancel, and Ok keys and the directional arrows.
Negotiation: A method of determining the best process for information transport.
Park orbit: Allows a parked call to be picked up from any phone in the system. The orbit number allows
the tracking of specific calls throughout the system (PBX only).
PBX system: Private branch exchange. The PBX system is the type of phone system most often used by
larger companies because it supports a larger number of lines than a Key system. The main feature of a
PBX system is that is has phone lines pooled into groups. For example, when dialing an outside line,
pressing 9 automatically assigns an outside line from the outside line group.
Ping: A computer network tool used to test whether various hosts are accessible over IP networks.
PoE power supply: Power over Ethernet (PoE) power supply. Supplies power and data over standard
twisted-pair cables in an Ethernet network.
Proxy: A server in a network that requests information from other servers on behalf of its clients.
84 Copyright © 2011 ADTRAN, Inc. 6AOSAG0001-31A