Panasonic KX-TG6671B Service Manual page 53

12.2.2. Connections (Portable)
Connect the DC Power or Battery to BATT+ and BATT-.
Connect the JIG cable GND (black) to GND.
Connect the JIG cable UTX (yellow) to UTX and URX (red) to URX.
DC Power
1
or Battery
Note:
*: COM port names may vary depending on what your PC calls it.
URX
BATT+
Portable P. C. board
URX (red)
3
3 UTX (yellow)
UTX
GND (black)
2
GND
BATT-
JIG Cable
53
KX-TG6671B/KX-TG6672B/KX-TGA660B
To Serial Port
(com port 1*)
PC