Toshiba GD-1210 Manual

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CONTENTS

4.2 Description of Circuits.......................................................................................................... 4-3

4.2.1 Configuration ............................................................................................................ 4-3

4.2.2 Line path switching control circuit............................................................................. 4-5

4.2.3 Dial pulse generation circuit ..................................................................................... 4-7

4.2.4 Line current detection circuit .................................................................................... 4-9

4.2.5 CI detection circuit.................................................................................................. 4-11

4.2.6 Line monitor circuit ................................................................................................. 4-13

4.3 PC Boards ......................................................................................................................... 4-16

5. INSTALLATION ............................................................................................................ 5-1

5.1 Explanation to the Users...................................................................................................... 5-1