IPitomy IP1100+ PBX Administrator Guide - Manual (Page 255)

IPitomy IP PBX Admin Guide
Internet Protocol (IP)
– A protocol used to send data over a network. These are currently set to IPv4 meaning
4 octets ranging from 0-255. The public internet takes up a majority of these addresses, but there are certain
ranges reserved for private LANs.
Reserved Private IP Address Ranges
Start End Number of Addresses
24-bit Block (/8 prefix, 1 × A) 10.0.0.0 10.255.255.255 16,777,216
20-bit Block (/12 prefix, 16 × B) 172.16.0.0 172.31.255.255 1,045,576
16-bit Block (/16 prefix, 256 × C) 192.168.0.0 192.168.255.255 65,536
Internet Service Provider (ISP) – A company that provides access to the Internet.
J
Jitter - This is the deviation in or displacement of some aspect of the pulses in a high-frequency digital signal. As
the name suggests, jitter can be thought of as shaky pulses. The deviation can be in terms of amplitude, phase
timing, or the width of the signal pulse.
K
L
Local Area Network (LAN) – 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.
Loop Back - The term loopback is generally used to describe methods or procedures of routing electronic
signals, digital data streams, or other flows of items, from their originating facility quickly back to the same source
entity without intentional processing or modification. This is not something you want to do on a LAN.
M
MAC Address - A Media Access Control address (MAC address) is a unique identifier assigned to network
interfaces for communications on the physical network. http://en.wikipedia.org/wiki/MAC_address
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.
N
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.
Network Address Translation (NAT) – Network address translation converts your LAN IP to the Public IP,
allowing traffic to go out to the internet and route back to the correct device on your LAN.
http://en.wikipedia.org/wiki/Network_address_translation