PBX SYSTEMS (MULTI-LINE PHONES WITH A CONTROL BOX)
Connecting the interconnect equipment to a computerized business phone system (PBX, Partner, etc.) is actually easier than in a home. Connect the interconnect equipment to an available analog INPUT port on your phone system computer. This is usually marked as an "Incoming," "Trunk," or "CO" port. Then, if necessary, follow the programming instructions for your phone system to recognize the port that the interconnect equipment is plugged into and where to send the incoming call. Remember, you are connecting another incoming line, so treat it as such. Do NOT connect the interconnect equipment to an "extension" port. It is NOT an extension line, but an incoming phone line. Please follow the rest of the instructions that are packed with your interconnect equipment to complete the installation.
KSU-LESS PHONES (MULTI-LINE PHONES WITHOUT A CONTROL BOX)
Connecting your interconnect equipment to KSU-less business phones involves a slightly different wiring approach. If you aren't using line-3 on your KSU-less phones, you will need to install an RJ-11 jack at every phone so that your phones can access the new interconnect equipment line your are setting up. (If you are already using Line-3 and have a 2nd RJ-11 jack, skip to the next paragraph.) Select an unused pair of wires that will become your dedicated interconnect equipment line. Connect this wire pair to the Yellow and Green wires inside every new RJ-11 jack. Make sure that all these new wire pairs are connected back at the phone terminal box (ie. blue to blue, blue/white to blue/white), but not to an active phone terminal. You now have a dedicated line running to all these new RJ-11 jacks. You will also need to either install a dedicated and properly wired RJ-11 phone jack near where your interconnect equipment is located or use a "Duplex" adapter at one of your KSU-less phones that will allow you to connect your interconnect equipment to that new pair of wires and still allow a line to run to your phone at that location. Run a phone cord from the new jacks to the 2nd input port on all your KSU-less phones. Plug the interconnect equipment phone cord into the new jack or duplex adapter. Follow the instructions for your phones to recognize the new line.
If you already have a 3rd active phone line and are using a 2nd RJ-11 jack at all your phones for this line, you then select an unused pair of wires within those jacks and connect this pair to the "yellow and black" pair of wires within the jacks. Then use a "Trip-plex" adapter in one of the jacks by a phone and connect your interconnect equipment to the "L2"port on the "Tri-plex" adapter. Connect a 2-pair phone cord from the "L1/2" port on the "Trip-plex" adapter to that same phone. You now have connected the interconnect equipment to "Line-4" for your phone system. Again, be sure that the wire pair you select is connected properly so that the signal will go to all the jacks. (See paragraph above.) Remember, you will need to use a 2-pair phone cord from each of these jacks to the 2nd input port at each of your phones so that your phones can connect to both "Line-3" and "Line-4," the interconnect equipment line. Follow the instructions for your phones to recognize the new line.
Lastly, remember that a KSU-LESS type phone system uses "Line-1" as the digital link to communicate to the other phones on your office network. As such, you cannot use put DSL or the interconnect equipment on "Line-1" because your phone system's digital signal will interfer with the operation of the interconnect equipment and DSL service will block your phones'ability to communicate to each other. You can only put a "clean" telephone company connection on "Line-1" and use another line for your interconnect equipment and still another for your DSL line. It is highly recommended that you use "Line-3" as your interconnect equipment line as this is the easiest to wire and won't interfer with a DSL signal, which is usually on "Line-2," or your phone system's communication on "Line-1."