Cut through the telephony jargon with our guide to common terms and acronyms.
An automated answering system that puts the caller through to the correct short dial/extension or department in the organisation by keys on a handset eg. Press 1 for Sales.
Bandwidth is a measurement that gives an indication of the amount of data that can be transferred through a connection in certain amount of time. In either bps (bits per second) or bytes per second.
A feature that allows users to use another number to re-direct their calls to another extension, group, voicemail or external number for example.
A feature that enables incoming calls to be forwarded to a different number, eg another extension, group, voicemail or external number.
This is another word for telephone line used in reference to digital lines.
Cloud or Hosted telephony is a system that resides in the cloud rather than physically in the form of a PBX in your office.
This stands for Direct dial in. When calls are made to a particular number they will directly dial to an individual’s extension/one number. This enables them to be called directly or automatically through a switchboard without the need for a receptionist.
Do Not Disturb. You can set your phone to DND if you don’t want to be contacted, for example if you are in a meeting.
Domain Name Service converts domain names to an IP address which a computer can ask to be routed by a network.
A collection of frame-based computer networking technologies for local area networks.
A piece of equipment that converts voice, video or fax in real-time to and from the PSTN to an IP network.
In terms of telephony this phrase is used to describe a service that is provided to the customer using equipment that is located remotely from their facility or in the ‘cloud’.
This allows a group of extensions or one numbers to be grouped together for example to be part of a department in a company for example support and calls will ring round them until it is answered.
IP – Internet Protocol
A term used to describe IP signalling methods and the way that voice traffic and data signals can be sent between devices connected to a network, internet and LANs.
Also known as an Integrated Services Digital Network. ISDN is a digital public network for voice and data communications.
A computer network within a limited area such as a building or office space.
Interactive Voice Recognition - see Auto Attendant.
Internet Service Provider
An organisation that provides access to the Internet.
A Private Branch Exchange is a private business telephone system.
Procedures in regard to the transmission of data between two devices.
Power over Ethernet allows electrical power to be transmitted through ethernet cables.
A Public Switched Telephone Network was traditionally analogue but now includes digital (ISDN).
Provides adequate voice quality across IP networks.
A network device that that handles message transfer between devices.
Session Initiation Protocol
A SIP trunk is a pure IP connection between your premises and the national telephone network.
A mobile phone that can browse the internet, receive email etc.
A trunk is a ‘line’ or ‘channel’ that you need for making a call.
A Virtual Private Network is a fast and secure way to transfer data between remote sites.
Voice over Internet Protocol is voice traffic passing over a WAN, VPN or the internet.
A large area computer network that isn’t just limited to one area.