MARINE RADIO CO.,LTD.
주/선박무선
Subject : Auto Exchanger Page : (40 / 46)
Date : 2010.10.13 Doc. : MCX-5000S_ENG_R1
(QAS-ADD-008/1/10.10.13) manual\pabx\mcx-5000S\MCX-5000S_eng.doc
(
MARINE RADIO CO., LTD.)
MRC
2.3 Dial Tone Board
A tone generator creates 350Hz, 440Hz, 480Hz, 620Hz, and melody.
The dial tone is transmitted to dial line and the rest of them are transmitted to cross point
SW. The dial signal received from the terminal is connected to one dial line via speech line
and sent to DTMF receiver.
In case of paging, first a chime bell generator is operated and sends the signal to public addresser.
Then, the voice signal line is connected from cross point SW.
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