GoIP User Manualhttp://www.dbltek.com 7Channel “x”Each GSM channel has its own status LED and its color is green.1. It blinks at a rate of every 100ms (Fast blink) when the corresponding GSMchannel is not yet registered to a GSM network.2. It blinks at a rate of every second (Slow blink) when the corresponding GSMchannel is ready for making or receiving calls (registered to a GSM network).3. It illuminates when GSM call activities occurs (in use, ringing).2 InstallationThe same installation procedure applies for all models with the differences in the number of channels (ports)available and the SIM card insertion. It is important to note that the power to the SIM slot MUST BEdisconnected/removed before removing or inserting a SIM Card. The power is removed by eitherdisconnecting the power to the GoIP or shutting each GSM module individually via its built-in web interface.1. SIM card slots are located either at the bottom (for old hardware) or at the back (for new hardware) of themain unit.For the models with the SIM card slots located at the bottom, you need to open the bottom SIM cover inorder to install SIM cards. First slide the metal clip to the direction as indicated on the top of the clip.Insert a SIM card to each slot carefully and then place the metal clip back in place.For the models with the SIM card slots located at the back, just insert a SIM card to each slot as shown inthe drawing on the right. Please make sure that the orientation of the SIM Card is correct beforeinserting the card.For GoIP (1-channel), the SIM card insertion orientation is shown in the figure on the right. The metalcontacts must face down and the cut corner is inserted first.For GoIP-4 and GoIP-8, the SIM card insertion orientation is shown in the figure on the right. The metalcontacts must face up and the cut corner is inserted first.