Analogue lines – Back to the future
Analogue lines can still be found in many business and residential properties throughout the UK. The analogue network is known as the PSTN (Public Switched Telephone Network). This allows people to make calls through your local telephone exchange, via a network of copper wires, you just need a telephone that’s plugged into a wall.
Analogue telephone lines provide limited functionality. You only get one number per line but you have extensions and you only you’ll only have access to basic call features.
Digital Business Telephone Lines – Current
A digital business telephone line provides fare more functionality than analogue lines. This allows businesses to have multiple channels. This allows companies to allocate Direct Direct Dials to different departments and employees.
These use ISDN lines which provide between 8-30 channels
Internet Telephone line – VOIP – The Future
VoIP (Voice Over Internet Protocol) systems often transmits data over the internet, but you don’t need to have a PBX system in order to use VoIP devices. Instead, you can make calls via a remote system operated by your service provider.
This system gives you even more functionality than an ISDN line but still includes the option for Direct Dials.