SamsungDCS-408 & 408i Keyphone System Installation Manual– 27 –Station Message Detail Recording (SMDR)Connect a serial printer to the SIO serial port on the system using an RS-232C cable. Use ashielded computer cable longer than 5m. The maximum allowed length of the cable is 15m.SMDR output printer options are set in MMC 725, SMDR Options. Parameters are set inMMC 804, System I/O Parameter.Cable connections are as follows.SIO Port Printer PortRXD(2) <----------------------------------------------- TXD(2)TXD(3) -----------------------------------------------> RXD(3)GND(5) ------------------------------------------------- GND(7)PC and Remote ProgrammingNOTE: This feature is applicable to the DCS-408i system only.To program the system via a personal computer (PC) or customer-provided modem (remoteprogramming), connect a modem or a PC to the serial (SIO) port of the system using an RS-232C cable. Refer to diagram above. The PC must be equipped with the proprietary pro-gram, PCMMC.Before connecting the PC or modem: Ensure that the power to the PC/modem and keyphone system is turned OFF. Remove the external battery, if installed.Otherwise, the keyphone system and PC/modem may be severely damaged.NOTE: When the PC or modem need to be more than 5m away from the keyphone system,shielded computer cable is required. The cable must not exceed 15m.