If you’re looking for guidance on a new technology, or troubleshooting a piece of hardware that your company inherited before you found a vendor, the system in question may not be the strong suit for your current hardware vendor. In this case, you need to find a new hardware vendor. The world of telecom
If your hardware vendor doesn’t know
Problems and inquiries grow like
The point is that you can easily overlook something when you’re in a panic that is clear as day when you’ve calmed down a bit. People commonly troubleshoot a problem for days on end, only to find out that there was something as simple as a configuration issue to blame.
When you are at your wit’s end, stop, bring all the key players together for a conference call, and slowly go over all the information about your service. Start with how the service is configured, move on to a discussion of the hardware you are using, and move on from there by describing the specific issue and sharing the most detailed information you have about the variables you believe could be
This same approach also works when you are reviewing new technology. Don’t try to make your application fit the new technology. Instead, objectively see whether the technology can successfully fulfill your application needs. You may think that some complex technology like MPLS or VoIP sounds very high speed and sexy, but if
Introducing male loopback plugs
A loopback plug is the cheapest piece of test equipment you can own. It consists of a small plastic connector and about 10 inches of wire. The loopback plug assists in insolating problems within your circuit and provides a device for your carrier to run to during
The male loopback plug for a T-1 circuit consists of an RJ-45 connector with pin 1 connected to pin 4 and pin 2 connected to pin 5. You can easily make your own male loopback plug — or have your hardware vendor make one for you.
Here’s what you need to make your own male loopback plug:
You can buy
Crimping device: This tool enables you to secure the wires into the RJ-45 connector and costs between $20 and $55. Nicer crimping tools also allow you to work on RJ-11 connectors, which are used for standard telephones, fax machines, and analog modem lines.
Wires: You use wires to input into the connector. You can cut them from any flat phone or modem cable. After you cut a 6-inch section of cable and remove 2 wires, you need to insert them into the RJ-45 connector (see Figure A-1).
Figure A-1: The pin configuration for a male RJ-45 plug.
This configuration allows you to connect the transmit wires 1 and 2 to the receive wires 4 and 5. After inserting the wires into the slots, simply crimp down the