Dual-tone multi-frequency

The tones that are heard when you press the buttons on a touch-tone telephone and allows you to send data via PSTN. DTMF assigns a specific frequency (consisting of two separate tones) to each key. This is also the system that most emergency telephones use to transfer information e.g background call information.

Global System for Mobile Communication.

GSM is only voice and GPRS is voice and data.

Publicly Switched Telephone Network is the worldwide voice telephone network. THE PSTN Line is the conventional analogue telephone line that allows an emergency telephone to call.

A network element that performs conversions between different coding and transmission formats. The gateway does this by having many types of commonly used transmission equipment and / or circuits from different carriers to provide a means of interconnection.

Internet Protocol. A packet-based protocol for delivering data across networks.

Voice over Internet Protocol. A protocol for transmitting the human voice in digital form over the Internet or other networks as an audio stream, instead of using traditional telephone lines. VoIP uses the Internet Protocol (IP), but is not limited to communication by computer.

Universal Mobile Telecommunications System represents an evolution in mobile network in terms of capacity, data speeds and new service capabilities.

Fourth generation mobile network that provides increased performance.

Yes, we supply P100 compatible lift emergency phones. 

We have a VdS compatible DCP. Please contact us to discuss this requirement.