Pulse or digital communications – Repeaters – Testing
Patent
1985-10-30
1987-07-14
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375121, 371 32, H04B 138
Patent
active
046807730
ABSTRACT:
A data telecommunications system and method is provided for sending a data stream of characters between two pieces of data terminal equipment (which can be either terminals and/or computers) connected over communication lines. A modem is connected between each piece of data terminal equipment and the communication lines, and at least one of the modems is capable of operating in both a special mode which provides optimized data transmission and a normal mode which provides direct non-optimized data transmission. Upon detection of a special mode indicating character, a modem of the data telecommunication system of the present invention will establish a link under the special mode protocol. In one embodiment, when a second special character is detected by the modem, the modem is caused to operate in a normal mode. In an alternate embodiment, the modem will store characters in a special buffer memory until either the special mode-indicating character is detected or until the buffer fills. If the buffer fills, the modem begins operation in a normal mode and the characters stored in the buffer are transmitted prior to the transmission of the remaining characters in the data stream.
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Huseman M.
Microcom, Inc.
Safourek Benedict V.
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