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Glossary

 

ADSL

 

 

Asymmetric Digital Subscriber Line: DSL is a technology that transforms an analogue telephone line into a high speed digital line. Incoming and outgoing data speeds are different with ADSL.

ATM

 

 

Asynchronous Transfer Mode: an international CCITT standard for high speed, packet-switched networks that operate at digital transmission speeds above 1.544 Mbps.
BEL Business Exchange Line: another term for Business Phone Lines.
Broadband Broadband comes from the words "broad bandwidth" and is used to describe a high-capacity, two-way link between an end user and access network.
Cable modem Cable modem: a high speed modem allowing users to connect to a service provider through their local cable network to have an 'always on' connection to the Internet.
CoS Class of Service: a term used to divide the source traffic from a user into a number of separate classes, each attracting its own quality of service indicators. 

CPE

 

Customer Premise Equipment: communications equipment located at a customer’s premises.
CPS Carrier Pre-Select: a service that allow you to connect to our network and benefit from our competitive call rates, while retaining your existing numbers.
DNS Domain Name Service/Server: an internet protocol for relating service names to URLs to an IP address and vice versa.
DoS Denial of Service. An electronic attack whose purpose is to prohibit an opponent the use of a program or an entire system.

DSL

 

Digital Subscriber Line: technology that transforms an analogue telephone line into a high speed digital line.

E1

The European standard for digital transmission, carrying data at 2 Mbps.

Ethernet

 

A method of connecting computers in a LAN (Local Area Network) to transfer data over a communication cable.
FTP File Transfer Protocol: A method for sending files between computers.

IP

 

Internet Protocol: a standard method of sending information from one computer to another across the internet.
IP Address Internet Protocol Address. A numeric address that is given to servers and users connected to the Internet.

IP PBX

 

 

 

Internet Protocol Private Branch eXchange: an Internet Protocol-enabled PBX which sends voice traffic over a data network instead of a traditional phone network. It provides features such as employee dial tones, extension dialling, transfer or conference calls.

IPVPN

 

Internet Protocol Virtual Private Network: a way of using the internet to link up separate sites of an organisation.

ISDN

 

Integrated Services Digital Network: an international standard for sending voice, video, and data over digital or analogue telephone lines.

IVR

 

 

Interactive Voice Response: a system that permits the voice control of computer systems, often via a touch-tone telephone, allowing the user to interact with a database by voice.
Kbps Kilobits per second: a measure of data transmission.

LAN

 

Local Area Network: a high speed communications network covering a small geographical area, such as an office or group of offices.
Leased Lines A point-to-point connection between two sites, which is leased from the network operator.

MAN

 

Metropolitan Area Network: a high speed communications network covering an area larger than a LAN and smaller than a WAN.
Mbps Megabits per second: a measure of data transmission.
MBps Megabytes per second: a measure of data transmission. 1 megabyte = 8 megabits.

MPLS

 

 

Multi-Protocol Label Switching: a labelling standard to manage traffic based on priority and service plans. It is multi-protocol because it works with (IP) Internet Protocol, (ATM) Asynchronous Transport Mode, and frame relay network protocols.

PBX

 

 

Private Branch eXchange: a private telephone network within an organisation allowing users to share external telephone lines instead of having a dedicated external line for every telephone.
PDH Plesiochronous Digital Hierarchy: a multiplexed technology used for transmitting digital information over optical networks.

PoP

 

 

Point of Presence: a point of connection to a service provider's network. The more POPs offered by a provider, the more customers can access the service through a local call.
PSTN Plain Switched Telephone Network: a traditional wired telephone network.
QoS Quality of Service: a term used to denote how different classes of information are handled in a network. For example, voice require a higher QoS than data. This usually includes parameters such as end-to-end delay, jitter and loss.  
Router A device or setup that finds the best route between any two networks, even if there are several networks to traverse. Remote sites can be connected using routers.
SDH Synchronous Digital Hierarchy: a standard for transmitting digital information over optical networks.
SIP Session Initiation Protocol: used to set up communications sessions on the Internet, such as telephony, presence, events notification and instant messaging.
SMTP Simple Mail Transfer Protocol is a protocol used to send and receive email.
Virtual LAN Virtual Local Area Network: A logical rather than a physical LAN comprising workgroups drawn together for business reasons or for a particular project irrrespective of each member's actual location.  
VoIP Voice over Internet Protocol: a method of transmitting voice calls over the internet.

VPN

 

Virtual Private Network: a private network that uses the public telecoms infrastructure.

WAN

 

Wide Area Network: a high speed communications network covering a wide geographical area.
WLR Wholesale Line Rental: a service that allow you to connect to our network. With Wholesale Line Rental, you can transfer the ownership of your existing lines to us.