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Glossary
Analogue Telephone Adapter (ATA) – Connects a telephone to a high-speed modem and
facilitates VoIP or fax calls over the internet.
Backbone – Global network connections that route voice and data traffic from one major
metropolitan area to another.
Bandwidth – The transmission capacity of a given device or network.
Broadband – An internet connection that is always-on and fast.
Browser – A software application that allows users to view and navigate to information on the
Web. Microsoft® Explorer® and Mozilla Firefox® are two common browsers.
Busy Lamp Indicator (BLI) – An LED on a telephone showing which line is in use.
Caller ID – Displays the name and telephone number of a person calling.
Call Detail Record (CDR) – Information about calls collected from the IPitomy 1000 for a
specified period of time. This report is downloadable. The report details the number of calls, call
duration, call origination and call destination.
Digital Subscriber Line (DSL) – This service provides digital phone service over an analog line.
Direct Inward Dial (DID) – A telephone number assigned exclusively to an extension or person.
This number allows a caller to reach a person directly without using a menu.
CODEC (Compression-decompression) – This voice compression-decompression algorithm
defines the rate of speech compression, quality of decompressed speech and processing power
requirements. In VoIP, ITU-T G.723.1 and G.729 (AB) are the most often used CODECS.
Do Not Disturb – Prevents notification of incoming calls.
DTMF (Dual-tone Multi-frequency) – This is the touch-tone or audio signal a phone sends to a
phone system to get it to perform some action.
Encryption – The process of scrambling data to prevent the accurate interpretation of this data
by anyone except those for whom it is intended.
Forward – Automatically forwards an incoming call to another telephone number.
Gateway – A device that interconnects networks with different, incompatible communications
protocols.
IEEE – The Institute of Electrical and Electronics Engineers – An independent institute that
develops networking.
Infrastructure – Currently installed computing and networking equipment.
IP Telephony – Phone service (voice calls) carried over a network using Session Initiation
Protocol.
Internet Protocol (IP) – A protocol used to send data over a network.
Internet Service Provider (ISP) – A company that provides access to the Internet.
LAN (Local Area Network) – A group of computers and other devices that share a common
communications line. These devices most often share a server and are located within a small
geographic area.
Message Waiting Light – A light on a phone indicating that a voicemail message is waiting.
Music on Hold – Music or announcements callers listen to while on hold.
Network – A group of computers or devices that share a common communication line and are
typically used for the transmission of data and voice traffic.