| 发明名称 |
LOOP SUPERVISORY SYSTEM |
| 摘要 |
PURPOSE:To make it possible to supervise the loop which contains a transmission line and MODEM by sending back the pilot signal from a master station at the remote equipment. |
| 申请公布号 |
JPS5399805(A) |
申请公布日期 |
1978.08.31 |
| 申请号 |
JP19770015151 |
申请日期 |
1977.02.14 |
| 申请人 |
FUJITSU LTD;NIPPON TELEGRAPH & TELEPHONE |
发明人 |
SAKAI TAKESHI;KIMURA SHIYUUJI;ISHIKAWA TOSHIYUKI |
| 分类号 |
H04Q11/04;G06F13/00;H04B17/00;H04M3/26;H04M9/02 |
主分类号 |
H04Q11/04 |
| 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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