RAD DATA COMMUNICATIONS SRM-5TX Modem Type Data (asynchronous) Maximum Data Rate 19.2Kbps Data Bus External Data Modulation Protocol Proprietary [Image] CONNECTIONS Purpose Location Purpose Location RS-232 CN1 Ground GND RJ-12/RJ-45 CN2 Line LINE CD SIGNAL Setting JP1 » Forced high Pins 2 & 3 closed Normal Pins 1 & 2 closed DIAGNOSTIC LED(S) LED Color Status Condition CD Red On CD signal is high CD Red Off CD signal is low