CallerID Whozz Calling Basic POS 2 Product Manual page 10

Appendix - RS232 Pin Outs
When the serial port is configured to "No Flow Control", only Transmit and Ground connections are required. Pin 7
and Pin 8 need to be connected only if other serial flow control types are selected.
Computer DB9/M Serial Port
Pin 1 (Carrier Detect)
Pin 2 (Receive )
Pin 3 (Transmit)
Pin 4 (Data Term. Ready)
Pin 5 (Ground)
Pin 6 (Data Set Ready)
Pin 7 (Request to Send)
Pin 8 (Clear to Send)
Pin 9 (Ring Indicator)
Monitoring Unit DB9/F
Pin 1 (No Connection)
Pin 2 (Transmit)
Pin 3 (Receive)
Pin 4 (No Connection)
Pin 5 (Ground)
Pin 6 (No Connection)
Pin 7 (Internal
Pin 8 Connection)
Pin 9 (No Connection)
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