Raisecom Technology Co., Ltd84.1.4. DIP-switch SW2 Setup: All OFF by DefaultSW2 is the switch for address code setting. When all OFF, the equipment can be remotemanaged; otherwise, it can be managed locally through LNK-UP port.The addresses shall not be the same for the equipment cascaded atone serial port. There are 4 bits of this switch, so that the max numberof local cascade equipment is 15.4.1.5. Function Buttons: All “High Position” by Default• GL LCK / GL CLR Global alarm lock/ Global alarm clear button:When button is “low”, the GL is on Global alarm lock mode. The GL indicator will not offonce turned on until alarms are cleared.When button is “high”, the GL is on Global alarm clear mode.• MASK / NO MASK“Low”: Mask unused E1’s alarm“High”: No mask unused E1’s alarm• EN RING / DIS RING Alarm ring enable/disable button“Low”: Enable alarm ring. When there is alarm, the “zi…zi…” alarm rings.“High”: Disable alarm ring, but the service phone still rings.4.1.6. Optical Port• The fiber connector is DSC/PC for dual-strand models, TX for signal output and RX forsignal input• The fiber connector is SC/PC for single strand models.4.1.7. Network Management Port• LNK-UP shall be connected to the serial port of computer or LNK-DWN port of up-levelequipment when cascading. The RJ45 socket complies with RS-232 standard with bitrate of 9600bps• LNK-DWN shall be connected to the LNK-UP port of low-level equipment. The RJ45socket complies with RS-232 standard with bit rate of 9600bpsPlease refer to Appendix B.2 for the sequence of serial cable between LNK-UP andcomputer serial port.Please use RJ45-RJ45 straight-through cable to connect LNK-DWN and LNK-UP ports.1 2 3 4ONOFF