When your router is powered up and connected properly it should look like the above picture.
The light on the far right is the power light, when this light is green it shows that the router is powered on.
The lights Numbered 1 & 2 over TEST are for the WAN connection to the outside world. Normally when these two lights are green it shows that WAN connection to the outside world is ok. If either or both of these two lights are not green or are flashing green you do not have a successful connection to the outside world and you should call CTS Telecom, Inc. service center for further help and tell them that the Adtran 6100 Router's WAN lights 1 & 2 are not green or on.
The green light on the left side of the router below the "L" is the LINK light. When this light is green it shows that the ethernet side of the router is successfully connected to your computer or LAN's hub or switch. Though it is possible that this light can light green even though the LAN Cable is wired wrong or has a bad pair. So never assume anything always test with a second cable if you have one.
Now looking at the back of the Adtran 6100 Router you see a black cord on the left side. Obviously this cord needs to be plug into the router to get power to it.
To the right of the black power cord is a small silver on and off switch. This power switch must also be on to get the power light on and showing green.
The next cable you see in the above picture is the white LAN cable that plugs into the ethernet port of the Router. This port is called an RJ45 / LAN / 10 BaseT ethernet port. It is the inside interface of your router. The IP address of this port is normally pre-configured by CTS Telecom service department to 192.168.1.1. If your LAN has a different subnet than 192.168.1.X you should either re-number your LAN's PC's or have CTS Telecom re-number the Routers ethernet interface. (This can be done remotely by a qualified CTS Service Center Technician, in other words a technician will not have to come to your business or home.)
The Silver cable on the far right side of the router is the WAN connection. This cable should have been installed by the CTS Telecom, Inc service technician that installed your IDSL line to your building. You should not have to change this cable for any reason.
The DB-25 pin or RS-232 serial port of your router located between the Ethernet port and WAN port is for programming your router. This programming only done by a qualified CTS service technician and you should not attempt to connect to or program your router via this port. The setup of this router is complicated and even if you are an expert you will not know answer to many of the internal settings of this router. CTS Telecom will charge a re-programming fee to anybody that changes or resets the router back to the factory default options.
The LAN cable that is provided with your router is a cross-over cable that is designed to plug directly into the ethernet card in your computer. If you are going to plug the router into a hub on your local are network using a this cross over cable you should plug it into the port on your hub that has a cross-over port, or use a regular computer patch cable and plug the router into a regular port on the hub. I would recommend that if you are setting up your router to run on a network that you use a regular straight through patch cable.
For more information on the Adtran Express 6100 go to the Adtran website.