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1.发明授权Coordination and control of transmission compatibility among private network, tie line, and toll message network lines and trunks in crossbar offices 失效协调和控制专线，专线，长途电话线路和长途电话线路和干线之间的传输兼容性
公开(公告)号：US3290444A
公开(公告)日：1966-12-06
申请号：US32293763
申请日：1963-11-12
Applicant: BELL TELEPHONE LABOR INC
Inventor： ANDERSON EUGENE S , MASUCCI EUGENE D
IPC: H04Q3/00
CPC classification number: H04Q3/0016
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公开(公告)号：US2953778A
公开(公告)日：1960-09-20
申请号：US61131856
申请日：1956-09-21
Applicant: BELL TELEPHONE LABOR INC
Inventor： ANDERSON EUGENE S , BUDLONG WILLIS A
IPC: H04Q3/42
CPC classification number: H04Q3/42
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