Malfunction detection system for a mobile radio telephone system

Details Malfunction detection system for a mobile radio telephone system Malfunction detection system for a mobile radio telephone system

1982-04-13

1983-11-15

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455 33, 455 56, 455 67, H04B 360, H04B 1700, H04Q 704

Patent

active

044157703

ABSTRACT:
A malfunction detection system sends a test calling signal to the mobile base station receiver and receives a response signal from the mobile station transmitter. A controller in the malfunction detection system monitors the access channel for proper operation and transmits an alarm signal to the mobile station controller when a problem is detected.

REFERENCES:
patent: 4180708 (1980-01-01), Yamaguchi et al.
"Mobile Unit for 800 MHz Band Land Mobile Telephone System"-Sakamoto et al., Review of the Electrical Communication Laboratories, vol. 25, No. 11-12, Nov.-Dec., 1977, pp. 1231-1244.
"800 MHz Band Land Mobile Telephone Control System"-Yoshikawa et al., Review of the Electrical Communication Laboratories, vol. 25, No. 11-12, Nov.-Dec. 1977, pp.1172-1190.
"Supervisory and Control Equipment"-Sado et al., NEC Research and Development, No. 57, Apr. 1980, pp. 99-108.

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