Panasonic KX-TG7622B - Link to cell settings; Selecting which unit receives cellular calls

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KX-TG7622B/KX-TG7623B/KX-TGA410B
4.7. Block Diagram (Handset)
IC1
IC6
IC3
MIP
MIN
HSSPOUTP
LOUT
BELL_LED
SPOUTP
SPOUTN
CKM//STM
CKM/STM
BBIC
RESET
Battery_ON
CHG_CTL
CHG_DET
WP, CLK, DATA
KEYSTOROBE_A~E
KEYIN_1~5
CHARGE
Q4
D7
MIC
Receiver
LED
Monitor SP
LCD
CHARGE
PUMP
IC4
KEYS
RF part
ANT1
X1
13.824 MHz
EEPROM
VBAT
BATTERY
Q5
LED
(LCD)
RSTN
(BELL)
VBAT
VBAT
3V
4.0V
VBAT
RXn
RXp
RXON
TXp
TXn
TXON
KX-TGA410 BLOCK DIAGRAM (Handset)
KEY_LED
CP_OFF
Q6
LED
(KEY)
4V