发明名称 |
CIRCUITAL ARRANGEMENT ADAPTED TO DETECT THE ELECTRIC FEATURES OF BOTH ANALOGICAL AND DIGITAL TRUNKS ASSOCIATED WITH A TRANSIT TELEPHONE EXCHANGE OF DIGITAL TYPE |
摘要 |
<p>A circuit arrangement is provided for testing electrical characteristics of both analog and digital trunk lines connected to a transit telephone exchange of digital type comprising a central control unit CC for controlling switching of codes in a connection network RC. The circuit arrangement includes an interface unit UIR for the connection network, an analog trunk line testing unit UPA, a digital trunk line testing unit UPD, a stored program microprocessor MIP operating in time division multiplex, or an interface UIC for the central control unit. <IMAGE></p> |
申请公布号 |
IN152744(B) |
申请公布日期 |
1984.03.24 |
申请号 |
IN1981CA23219 |
申请日期 |
1981.03.03 |
申请人 |
ITALTEL SOCIETA ITALIANA TELECOMUNICAZIONI S.P.A. |
发明人 |
BARTOLOMMEI BRUNO;BOVO AMILCARE;SCARCELLI RICCARDO |
分类号 |
H04M3/24;H04Q11/04;(IPC1-7):H04M1/00 |
主分类号 |
H04M3/24 |
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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