发明名称 |
Dial-up line modem directly compatible with mainframe host having bisynchronous communication protocol |
摘要 |
The modem of this invention is capable of direct connection to a communication Host associated with a mainframe computer which uses a bisynchronous (bisync) protocol so that the Host believes a valid terminal is continuously connected regardless of whether the modem is online or offline. This permits communications to be established with the mainframe over the public switched telephone network.
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申请公布号 |
US4853954(A) |
申请公布日期 |
1989.08.01 |
申请号 |
US19870008713 |
申请日期 |
1987.01.28 |
申请人 |
UNIVERSAL DATA SYSTEMS, INC. |
发明人 |
RICHARDS, JOHN C. |
分类号 |
H04L29/06;H04M11/06 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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