Products - Remote Data Link - Modem Control over Remote Devices

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We are designing many high quality products, which are intended for professional use. We are offering custom designs too, which are perfectly suited to your needs.
Contact us for more information at evladkov@phys.uni-sofia.bg.

Remote Data Link - Modem Control over Remote Devices

This device makes it possible to connect to remote devices with terminal interface (Local Craft Terminal) using a modem. Usually this are devices like multiplexers, crossconnectors, routers and many others, which can be configured or accessed through this terminal port using a personal computer running the interface program. The Remote Data Link makes it possible to stay at home, in a different city or elsewhere and to control your equipment remote. The interface program for the controlled equipment has to be functional on your computer. You have to install an additional interface program to control the Remote Data Link and to specify in this program the location of the original terminal program. Two modems have to be installed: one at your computer location, and the other residing near the remote controlled equipment. The Remote Data Link module is inserted between the modem and the controlled equipment. Different baud rates and port settings can be specified to accommodate exactly the interface of the controlled equipment. For the remote control sessions the PSTN is used. For security critical applications the device provides the additional password option, which allows you to access your remote control equipment after supplying the correct password. The Remote Data Link provides an additional port, which can be configured to retransmit the data flow between the modem and the controlled equipment in both directions (one of them) to a terminal computer, connected to this serial port. Remota Data Link

**Remote Data Link Module Specifications**
Modem support	External modem supporting the Hayes AT command set. The speed of the modem has to be able to accommodate the transfer speed of the controlled equipment.
Internal buffer size	16 Kbytes
Communication Ports	2, serial, supporting EIA RS232C,D
Communication Port Connectors	9 pin, D-type, male
Terminal Port	1, serial, supporting EIA RS232C,D
Terminal Port Connector	9 pin, D-type, female
Port settings control	16-positions switch at the local panel
Supported speeds and parity	4800 bps, 9600 bps, 19200 bps or user specified; parity: none, odd, even
Power supply	9V AC or DC from external wall cube adapter 48V from external battery pack
Accessories	Device-to-modem cable, Device to controlled equipment cable, Power supply adapter, appropriate modems (optional)

Interface Program*
OS requirements	Windows 95, Windows NT
Editing control	The user can create multiple entries for connections, telephone numbers and terminal program locations.
Dialing support	tone and pulse
Help support	provided

* The interface program is written entirely by Valentin Velev (vvelev@microlab.ca)

The Remote Data Link device was constructed and tested by me and Mr.Valentin Velev. It was implemented to control Nortel, Alcatel and GPT SDH Multiplexers.