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Support of ASCII Auto-Dialing Device by EBCDIC BSC Driver Disclosure Number: IPCOM000057003D
Original Publication Date: 1988-Feb-01
Included in the Prior Art Database: 2005-Feb-14

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Shu, S [+details]


This invention allows support of auto-dialing devices, which support CCITT Recommendation V.25bis in ASCII Binary Synchronous mode, by an EBCDIC BSC driver without the need to reset or re-program the communication adapter hardware, while maintaining the ability to detect auto-dialing failure and collision of calls. This method allows attachment of a variety of auto-dialing devices. This is achieved by the use of hardware timer and the error detection capability of BSC protocol. Following call initiation, this procedure was devised. 1. At BSC driver initialization, the adapter is programmed to operate in EBCDIC mode (SYN=X'32', 8-bit, no parity). 2. DTR lead to the modem is turned 'logically on' to request CTS lead to be turned 'logically on' by the auto-dialing device. 3.