发明名称 |
AUTOMATIC SYNCHRONOUS/ASYNCHRONOUS MODEM |
摘要 |
There is disclosed an arrangement which enables a single modem port to be used for either synchronous or asynchronous data transmission, with no manual changes required. The modem determines whether the incoming call is synchronous or asynchronous by detecting the presence (or absence) of SYNC characters in the data stream immediately after handshaking. Once a determination has been made, the modem options itself accordingly for synchronous or asynchronous data handling. This arrangement eliminates the need for separate central office lines for synchronous and asynchronous data applications. |
申请公布号 |
JPS6333038(A) |
申请公布日期 |
1988.02.12 |
申请号 |
JP19870165574 |
申请日期 |
1987.07.03 |
申请人 |
AMERICAN TELEPH & TELEGR CO <ATT> |
发明人 |
UIRIAMU JIYOSEFU GAATONAA |
分类号 |
H04L29/06;H04L7/08;H04L7/10;H04L27/00;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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