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PresenTense Time Server Facts Sheet

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PresenTense Time Server is a multi protocol time server which synchronizes itself with any true time source and then acts as a server for all network clients. It is easy to set up but has powerful configuration settings for networks which require a high degree of accuracy. This means you can use PresenTense Server to synchronize your PC to a primary time source such as an atomic clock on the internet and offer time services to clients on your local area network. PresenTense server also allows synchronization to GPS receivers via RS-232 and the NMEA 0183 protocol. PresenTense Time Server ships with drivers for many reference clocks including Spectracom and Hopf. If you need an accurate, inexpensive and reliable time server, read on!

PresenTense Time Server operates three server components concurrently on the ports shown below :

1. Port 123 UDP ( SNTP - RFC 2030 )
2. Port 37 UDP ( TIME - RFC 868 )     
3. Port 37 TCP ( TIME - RFC 868 )  
4. Port 123 UDP ( NTP3 / NTP4 - RFC 1305 ) Free Plug-In included in product and demo  

This feature enables you to operate time clients on your network using different time protocols simultaneously depending on your requirements for accuracy. To obtain the latest version of our NTP4 plug-in for PresenTense Time Server free of charge at any time, kindly email us at support@bytefusion.com
.


PresenTense Server features include :

Multi Protocol Support  

When operating as a secondary time server, PresenTense Time Server can synchronize to primary, network time servers of the following protocol families :

1. NTP/SNTP  
2. Network Time UDP  
3. Network Time TCP  


GPS Receiver Support  

When operating as a primary time server, PresenTense Time Server can synchronize to GPS receivers via the PC's serial port and the NMEA 0183 protocol. In order to be compatible with PresenTense Time Server, GPS receivers must emit the GPRMC NMEA sentence (recommended minimum coordinates) at one or two second intervals. Special support is included for the Garmin GPS 2 Plus and the Garmin 38 hand held GPS receivers. You may use either PresenTense Time Server's native GPS support or the GPS support furnished by the NTP4 plug-in's reference clock support.

Free Run Support  

PresenTense Time Server automatically compensates for local system clock drift when operating in NTP or SNTP mode. This ensures maximum clock accuracy when free-running in the event of loss of connectivity to the reference time source.
The National Emergency Number Association (NENA)
identifies time keeping requirements for Public Safety Answering Points (PSAP) such as 911 call centers. These requirements include continuous accuracy of 100 milliseconds to UTC when locked to the reference time source and a maximum clock drift or error accumulation of one second pay day when the system must "free run". See also PresenTense NTP Auditor.

Redundancy  

An automatic fail-over mechanism switches to a redundant network time source if the primary time source becomes unavailable (only available when synchronizing to a primary network time server).

Email Alarm Action  

PresenTense Time Server can notify you by email if the time source becomes unavailable or critical errors are encountered during operation (SMTP only) .

System Service  

PresenTense Time Server operates as a system service - invisibly in the background. Configuration changes are made via the PresenTense Time Server applet in the system control panel.

Highly Customizable  

PresenTense Time Server features advanced configuration options, including the ability to evaluate the accuracy of its time source to within milliseconds.

Security  

Initial setup and later configuration via the control panel require administrator privileges. This minimizes the risk of tampering with system parameters by unauthorized users.

Remote Monitoring and Administration  

PresenTense Time Server may be administered fully by remote and monitored over the network to ensure accurate time keeping. Please check www.bytefusion.com for availability of monitoring software.

Advanced Statistical Filters  

Advanced statistical filters ensure that erroneous measurements are discarded, thus avoiding erratic system clock behavior.
   
Time Zone Specific Reference Clock Selection  

PresenTense Time Server automatically selects the most suitable primary reference clock server, based on your time zone configuration and geographic location.

Trademarks

Microsoft Windows and Windows NT, Windows 2000 and Windows XP are either registered trademarks or trademarks of Microsoft Corporation. No associations are implied. Garmin 38 and Garmin GPS 2 Plus are registered trademarks or trademarks of Garmin Corporation.

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