MOBILE RATIO TELEPHONE EXCHANGE SYSTEM

摘要

PURPOSE:To ensure the effective use for the radio frequency band width without impairing the economical property by adding externally the additional switch network formed so as to generate no link block to the ordinary switch network in the exchange office. CONSTITUTION:Exchange office 1 of the mobile radio telephone exchange system is provided in order to secure the mutual exchange connection for trunk line 5 of the radio side corresponding to several calling radio channels via exchange 30 for general telephone use which stores general telephone network 23 trunk line 10. And additional switch network 23 which is formed so as to be set always regardless of the using condition of other connection routes for the connection route to be connected is installed between trunk line 5 and connection trunk line 27 of exchange 30. Furthermore, connection control circuit 24 is provided to secure the driving control for switch network 23 through control unit 22 of exchange 30. And the connection is given between unit 22 and circuit 24 via connection control wire 26. Thus the link block probability inside exchange office 1 is decreased down to the level which can be ignored in comparison with the radio channel block probability. As a result, the effective use is secured for the radio frequency band width.