Interface circuit for interconnecting circuit switched and packet switched systems
摘要
An interface circuit is described for interconnecting a packet switched system to a circuit switched system which enables a uniform dialing plan to be utilized to establish intra-system or inter-system connections. This is accomplished by assigning each terminal of the packet switched system a unique terminal address similar to the extension number used for terminals of the circuit switched system. The interface also distinguishes data call set-up requests from other control commands received from the packet switched system.
申请公布号
US4723238(A)
申请公布日期
1988.02.02
申请号
US19860843239
申请日期
1986.03.24
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY;AT&T INFORMATION SYSTEMS INC.
发明人
ISREAL, CHARLES M.;JONES, JR., DAVID C.;YANG, CHENG-JEN;ZALLY, GEORGE D.