Comspec Digital Products provides the following products. By selecting any of the following products you will receive techncial information and can download product specification sheets in Word and Excel form.
· ffastestsPC-HSD ISA Buss Synchronous Communications Controller Board
· ffastestsPCMCIA Type II Synchronous Communications Controller Card
· Just File Transfer (JFT)
· Comspec DPI / MultiTech 'DataTalker' DT101/102 Data/Voice Multiplexer (No New Units)
· Money Saving Tip
Who
is Comspec DP?
Comspec Digital Products was the software, hardware and system integration
arm of Comspec, Inc. formed in 1972. We were the developers of a system called
"TapeTran" in 1978, which transferred half-inch data tapes from Rigs,
or Seismic Boats to office locations over the Inmarsat and dial telephone
network. In 1982 we designed a synchronous 9600 bps modem for Inmarsat use
called the 9600C. The 9600C was the first modem to achieve 9600 bps on the
Inmarsat "A" analog voice service. We were some of the first users of
the Inmarsat Simplex High-Speed Data service offered by Comsat in 1982. In 1987
Comspec Digital Products, Inc. was spun off as an independent company from
Comspec, Inc. and our products ffastestsPC and JFT were developed
for use in the dominant Personal Computer market. Our major focus is in
specialized communications software and hardware that will work in areas where
there is no "
Comspec Digital Products is a manufacturer of hardware and software for the transmission of data on the asynchronous and synchronous International dial network, Cell Phone, ISDN, V-Sats, and Inmarsat HSD & ASD Systems. We produce the "Hummer or Land Rover" of data communications software. We are focused on the Inmarsat "A & B" High Speed Data (HSD) service, both simplex and duplex. We have developed special software and hardware to allow the IBM compatible PC to move large data files to and from a remote Inmarsat Terminal to another Inmarsat Terminal or to a headquarters' office location. Two synchronous HSD systems are available. One for the DeskTop PC called ffastestsPC-HSD, a short slot AT-ISA buss board. One for the LapTop PC called ffastestsPCMCIA, a Type 2 PCMCIA card. The Windows 3.1X, 95, 98/ME, or MS-DOS software systems can function like a simple electronic mail gateway to other Unix, Linux, Mac, Windows NT/2000, or Novell networks using the on demand dialup Switched 56 kbps, dedicated V-Sat, or ISDN 56, 64, & 128 kbps International Networks. The system is an easy to use turnkey package with built in diagnostics and a very error tolerant transmission protocol which can re-link and resume from a sender power fail or complete link disconnect. The only thing the end user needs to do is setup methods (scripts, links, icons, or batch files) for moving his data into and out of our mailboxes (Subdirectories / Folders) precompressed and ready for transmission.
The "ffastests
protocol" is a proprietary protocol written in very tight code to maintain
the maximum data throughput, in the presence of multiple satellite delays with
high errors, and to give the user a minimum Inmarsat bill for large data file
transfers. This software is not a warmed over implementation of the TCP/IP,
SDLC, or HDLC protocols. The code is very demanding on the PC's processor and
the interrupts. We are now delivering a Windows 95, 98/ME, 3.1X, and DOS
versions of the software. A Windows NT/2000 version will not be possible
because of communications errors and throughput problems caused by the
operating system.
The Comspec DP software only asynchronous package Just File Transfer (JFT) is designed for use with "off the shelf" async modems with speeds from 2.4 to 33.6 kbps and with the ISDN terminal adapters which support V.120 and Bonding async protocols at 64 and 128 kbps. JFT is ready to use with Inmarsat M, B, and Mini-M terminals and with the Iridium and AMSC satellite terminals with setup scripts for the direct data modes of those terminals. JFT does not need any of the modem's internal error correction and it will transmit data with 100% packet errors on the line. If you need to send data on expensive and error prone circuits, such as: HF, VHF, UHF, and Cellular radio; Third World and some other International telephone links; Inmarsat satellite land mobile or marine, then it is costing you a lot of money not to use "JFT". The JFT system has a resume function that will recover and resume sending a file from a sender disconnect or a complete power fail. JFT will never send the same file twice. The current shipping "32 Bit API" software has long folder and file name support and a new "Browse" functions to make it easier for the user in selecting files and folders to send. JFT will run on the Inmarsat HSD service at 28.8 kbps isosynchronous.
Comspec DP offers consulting services to help our clients reduce their office to remote data, fax and voice communications cost using our products or making your selected LAN/WAN, Internet or e-mail services work better. Call us about your application and we can help you in choosing the best services for your specific communication needs.
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