Multiplex communications – Wide area network – Packet switching
Patent
1995-06-02
1996-09-10
Chin, Wellington
Multiplex communications
Wide area network
Packet switching
370 82, 370 941, 370 99, H04J 314
Patent
active
055552412
ABSTRACT:
The present invention provides a method for padding to maximize the number of characters transmitted by data communication equipment (DCE), such as a modem, to data terminal equipment (DTE). By employing the disclosed padding method the data throughput will be maximized and costs will be reduced by transmitting packets with a greater amount of characters. The present invention further provides a method for providing access to a control channel to invoke gateway functions to send qualified information from a DTE user to a remote system. Also a method to provide security by allowing private strings and passwords saved in a modem's stored dial strings. Additionally, a method for scrolling the DTE's screen to enhance readabilty and to provide compatability with standard terminal packages available on the market. Related apparatus is also revealed.
REFERENCES:
patent: 4665519 (1987-05-01), Kirchner et al.
patent: 5056088 (1991-10-01), Price et al.
CCITT The International Telegraph and Telephone Consultative Committee `Recommendation X.28 --DTE/DCE Interface for a Start-Stop Mode Data Terminal Equipment Accessing the Packet Assembly/Disassembly Facility (PAD) in a Public Data Network Situated in the Same Country`Nov. 14, 1988 Melbourne, AU see paragraph 4.4.
Lazaridis Mihal
Little Herb A.
Mousseau Gary P.
Sinha Anand
Chin Wellington
Research In Motion Limited
Vu Huy D.
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