Samsung DCS 816 Installation Manual

Also see for DCS-816: Programming manual Programming manual User guide Installation manual General description

Contents

SAMSUNGDCS-816 Installation Manual7-67.7 Remote Programming (Figure 7-6)To remotely program the system, connect a customer-provided modem to one of the serial inter-face connectors (DB9) on an SIO option card (Figures 3-1 and 3-2), and to an unused SLT port.Before connecting the modem, ensure that the system power is turned OFF. Any externalbattery, if installed, should also be removed. Otherwise, the system as well as the modem maybe severely damaged.Use a pin-to-pin RS232C cable. Only pins 2, 3, 4, 5, 6, 7 and 8 are required. When the modemneeds to be more than 5 metres away from the system, shielded computer cable is required. Con-nect a male DB9 connector to the SIO card and then connect a connector that meets the require-ment of the modem to the other end. The cable must not exceed 100 metres.7.8 Power Failure TransferIf the system loses AC power and has no external battery, the two analogue trunk lines on thebase board are automatically switched to the last two stations.1 st Trunk line to Station 15 (SLT)2 nd Trunk line to Station 16 (SLT)PIN CONNECTIONS TO MODEM FIGURE 7-6SIO BOARD (DTE DB9) MODEM (DCE DB25)RXD (2)TXD (3)GND (5)DCD (1)TXD (3)RXD (2)GND (7)DCD (1) THE SYSTEM POWER SHOULD BE REMOVEDBEFORE CONNECTING THE DEVICE CONNECT A PC EQUIPPED WITH PCMMC TOONE OF THE DB9 CONNECTORS ON AN SIOBOARDRTS (7) CTS (4)DTR (4) DTR (20)DSR (6) DSR (6)