VoIP Glossary

• ADSL: Asynchronous (asymmetrical) Digital Subscriber Line

• Contention Ratio: The maximum number of subscribers vying for the down and upload speeds at that exchange

• Download: The network see downloading as browsing. The download speed on a service is the browsing speed

• IP PBX: IP - Internet Protocol | PBX - Private Branch Exchange - IP PBX is a business telephone system designed to deliver voice over a data network whilst also integrating with the standard analogue phone network.

• ISP: Internet Service Provider; company that offers its customers access to the Internet

• LLU: Local Loop Unbundling; where a network provider has equipment within the local exchange to ransfer calls and data via their own local network

• MAC code: This stands for Migration Access Code and allows you to switch between broadband suppliers on your existing telephone line.

• Router/Modem: Apparatus designed to convert digital streams into standard signalling to pass over standard voice wires. Also hosts account information for access to the specified internet network

• SDSL: Synchronous (symmetrical) Digital Subscriber Line

• SIP Trunk: A SIP trunk is a service offered by an ITSP (Internet Telephony Service Provider) that permits businesses that have a PBX installed to use Voice-over-IP (VoIP).

• Upload: Upload speed is the speed the network offers to you to download items to your PC

• VoIP: Voice over Internet Protocol - transmission technologies for delivery of voice communications over IP networks such as the Internet