Mobile communications system

摘要

A mobile communications system includes a switch connected to an inter-working unit and a circuit switching signaling converter. The inter-working unit includes a first terminator for terminating a first transfer procedure of user information for wireless transmission and a first interface to the ISDN for the user information according to ITU-T Recommendation V.110. The circuit switching signaling converter includes a second terminator for terminating a second transfer procedure of a circuit switching signal for wireless transmission and a second interface to the ISDN for the circuit switching signal according to ISDN User Part (ISUP) of common channel signaling system No. 7.