With the announcement of the end of the Public Switched Telephone Network (PSTN) by the telecom operator community, the [email protected] converter was designed to extend the life of the existing PSTN transmitter base, in complete security and at low cost.
- [email protected] constantly monitors the state of the IP connection to the remote monitoring center, assures an automatic backup connection via a GPRS transmission channel, and enables remote control of all transmitter types.
- [email protected] is one of the only products on the market capable of transporting an audio streams via VoIP, and to allow alarm verification without a callback.
- Finally, [email protected] can be installed quickly and with complete confidentiality, thanks to a download procedure which allows the centralization of deployment, operation, and management of the installed base.
A PSTN TRANSMITTER MUST NOT BE CONNECTED DIRECTLY TO AN INTERNET “BOX” : WHY IS THAT?
Apart from the risk of unavailability of the internet connection (no battery backup for the “box”, loss of the DSL connection sometimes requiring “cold” reboots), several technical factors are likely to degrade the signals generated by the PSTN transmitters during transport, whether DTMF modulation (voice frequencies) or FSK (modems). These dysfunctions are non-deterministic and have a random impact on the logical connection between the PSTN transmitter and the remote monitoring center.
To address this problem, the [email protected] converter is installed between the PSTN transmitter and the “box” or the customer’s router, locally interprets the signals generated on the analogue interface of the PSTN transmitter, and manages the dialogue with the receiver front end at the remote monitoring center using an encrypted IP protocol. This guarantees reliable and secure transmission of information over the internet network.
SEVERAL VERSIONS MEETING ALL REQUIREMENTS
The [email protected] range comprises of four models. The [email protected] converter is available in the form of electronic cards which can be installed inside a PSTN transmitter, or in a case equipped with a power supply, a slot for a backup battery, mains and low battery charge indicators, and built-in protection against opening and removal.