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Mainly voice signal is modulated to RF, or it goes the other way.
14.1.3. EEPROM: IC201
All setting data is stored.
ex: ID code, user setting (Flash Time, Tone/Pulse)
14.2. Power Supply Circuit
Voltage is supplied separately to each block as shown the Block Diagram below.
14.3. Charge Circuit
Ni-Cd battery is connected to CN202. When the handset is put on the cradle of the base unit, the
power is supplied from CHARGE1 and CHARGE2 terminals to charge the battery. Q207 detects
the voltage of CHARGE1 and CHARGE2 terminals, then the handset makes ID code setting with
the base unit.
14.4. Ringer and Handset SP-Phone
DSP (29-31)
SP/RINGER
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