For secure environments where synchronized time is critical, it may not be appropriate to use a public NTP timeserver directly. Because of these restrictions, it may be difficult to have reference time available behind the firewall unless a site is willing to invest a great deal in infrastructure and design.

An good option for obtaining secure externally synchronized time is using NTS-dialup timeserver functionality or a combination of set NTS-dialup + NTS-3000.

A true novelty is an option to create cascade NTS timeserver products where one can simulate an GPS (NMEA) antenna for the other. This functionality enables time synchronization of secured LANs with official time from NTP timeservers available publicly online in Internet. This solution requires 2x NTS timeserver products working together. In the latter instance, NTS (model NTS-dialup works as an antenna emulator (STRATUM-0) for another NTS timeserver (NTS-3000, NTS-4000,NTS-5000) located inside the secured LAN, enabling safe time synchronisation (no TCP IP communication) of protected LANs with official, publicly available UTC time patterns.

Timeserver NTS-dialup

New NTS-dialup timeserver collects reference UTC time form public telephone services (Dial-up service) or from another NTP timeserver available on the Internet. For such purposes, NTS-dialup can be equipped with analogue PSTN, digital ISDN and GSM/GPRS/EDGE modems. Optionally, NTS-dialup can be delivered with its own single satellite GPS or DCF77*. 

Elproma offers addidtional hardware for NTS-xxxx timeserver products.  The time reference pattern can be simultaniously drown from: GPS (L1/L2), SBAS (EGNOS, WAAS), GLONASS, GALILEO.

>See Product page list

>NTP Network Time Protocol (RFC 1305)