Rs-232C Serial Communication - Panasonic KX-FM89BX Service Manual

2.3.7. RS-232C SERIAL COMMUNICATION

This model has a communication port designed for RS-232C serial communication. (The EIA
standards specify the interface cable type (No. RS232C) and the voltage levels.
If you use the TEST CONNECTOR, you can easily check the communication port without a PC.
The connector should be wired so that the output signal can return to the input port. (The
transmitted data is received by the unit.) You do not need to do any difficult operations. You can
get a test result by a simple key operation (#9000 870).
The result (OK or NG) is displayed on LCD.
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