A transceiver houses both a transmitter and a receiver.

This is the data packet unit that ATM transmits. One cell consists of 53 bytes.

IM (Instant Messaging) refers to chat applications. Chat is real-time, text-based communication between two or more users via networked-connected devices.

Signal-to-Noise Ratio (SNR) is the ratio of the amplitude of the desired (DSL) signal to the amplitude of noise signals at a given point in time. The higher the SNR number, the better the line quality.

A UTM (Unified Threat Management) appliance integrates firewall, content filtering, spam filtering, intrusion detection and anti virus functions into a single network appliance.

VID is the unique VLAN identification number.

The Internet in general.

ATM is a LAN and WAN networking technology that provides high-speed data transfer. ATM uses fixed-size packets of information called cells. With ATM, a high QoS (Quality of Service) can be guaranteed.

An Ad-Hoc wireless LAN is a group of computers that uses wireless LAN cards, to connect as an independent wireless LAN. An Ad-Hoc wireless LAN is sometimes referred to as a Basic Service Set (BSS).

An autonomous system (AS) is a collection of networks using a common routing protocol to exchange routing information.