MP1800 Router Install Manual V1.2TX cable should be connected with the RX cable of the peer device. The RXcable should be connected with TX cable of the peer device.Step 3: After power on, check LOS status of 1CE1/E1 module. If indicatoris on, it indicates that the circuit fails and signal loses sync, so check theline. In E1 transparent 2M mode, LOS is always on.Connect with RJ45-RJ45 straight-through twisted-pair if you are usingRJ45 interface. BNC and RJ45 cannot be used at the same time.Note1. When connecting, pay attention to the ID on the interface,avoiding inserting into other interface and damaging the moduleor router host.2. For the E1 module, the LOS is on in the transparent 2M mode; innon-transparent 2M mode, LOS is on when not finding the framesynchronous signal and then becomes off after synchronization.Connect 1VOP/2VOP Module InterfaceCableConnect the cables of the VOP module as follows:Step 1: Insert the telephone line to the RJ11/RJ45 interface of1VOP/2VOP and the other side to the telephone.Step 2: During the call, pay attention to the indicator on the back panel ofthe 1VOS/2VOS card. The indicator of each channel should be on duringthe call and the Active light of the slot on the front panel should also be on.Otherwise, contact the agent.NoteWhen connecting, pay attention to the ID on the interface, avoidinginserting into other interface and damaging the module or router host.Connect 1VOS/2VOS Module InterfaceCableConnect the cable of the VOS module as follows:Maipu Confidential & Proprietary Information Page 48 of 55