Panasonic KX-TVM200E Service Manual page 49

KX-TVM200E / KX-TVM200NE
6.1.11. Modem Option interface slot
For remote maintenance, the board provides a slot for a modem card. Serial send/receive signal for sending/receiving data with
modem IC, 3.3v power supply, and reset signal capable of separately resetting only the modem are reserved.
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