T568B Pin Out

This picture came to me in an installation guide that I thought would be nice to share with others and to have it when I am out on sites and do not have a reliable picture or book to verify my information.

This picture also gives a real life representation of the pin count on a RJ-45 end.

T568B Pin-Out:

Default User Name and Passwords

I have to add this web site to my blog because sometimes when I'm in a hurry I cannot find this web site.

This is the web site that will tell you the default user name and passwords for a large number of makes and models of switches, routers and modems.

http://www.phenoelit-us.org/dpl/dpl.html

This web site's information has saved me a ton of hair loss and it had to be added to my blog.

To the creator/creators of this wonderment....

THANK YOU SO VERY MUCH.

I hope this never disappears from the World Wide Web.

Telephone (Biscuit) Jack Wiring for Ethernet

Sometimes when creating a data run you don't have the luxury to install face plates and Cat5 Cap stones for an inside run. You can still create an Ethernet point with a Cat5 surface mount telephone jack that you can mount on the outside of the wall without having to cut extra holes or having to run conduit.

This is generally done post construction for an extension of the central demarcation point for anything such as a T1 smart jack, cable modem, patch panel, switch, or router.

First you have to use a standard straight through cable from the demarcation point. The pin out of this has been mentioned before, but I'll show it again here to save some time:

RJ-45 Cat5e Standard Straight Through Pin Out:
Make sure the clip end is facing down and the pins will go from left to right Pin 1 - Pin 8. The gold leads in this picture should be facing you.

This will be the business end for the cable that will plug into the smart jack or whatever you are starting the run from. The other end of this cable will be wired up in the Telephone Jack.

The first picture of the jack is the common color layout of a Cat5 Telephone jack yours could be different depending on the manufacturer. What is really important is what is shown in the second picture. That is what you want your end product to look like:

Cat5 Telephone Jack (Before):






COLORS VARY BASED ON MANUFACTURER

The top end of this jack is where the Ethernet cable will plug into to connecting the demarcation point to the end device.









Cat5 Telephone Jack (After):





This is the pin out for how it should be connected.

So if using the colors from the picture above you would connect your Orange/White wire to the Blue wired pin and so on.











Once you have completed connecting all the wires together you should test for continuity with a LAN tracker before mounting and closing up the biscuit to save yourself some time and heartache if anything should not work out correctly.

JS

Bridged Modem's

This is a general real world explination of a bridged modem. I am not going to bore anyone with the specifics of data transfer and bit rates on a bridged modem compared to a routed modem.

When you run into a modem that the ISP has stated is in bridged mode you have two options.

The first option is to reset it to DHCP or routing mode. Usually the modem is in bridged mode for a reason so resetting it to route mode is not an option.

The second option is to get all of the information for the modem that you can.

A bridged modem is a modem that will connect two separate parts of your network together. More times than not it is a link between the outside and your router. The modem has a static IP address and this address is set up in your router configuration creating a bridge between the public and private address on the network.

The information you needed from your ISP will be the IP Address, Subnet, Gateway, and sometimes the DNS server. DNS will depend on your network set up, but it is usefull to have the ISP DNS information just in case.

A username and password for the modem is also helpful just in case you need to modem configurations. Some companies will give you this information freely. Other companies though will not give you the user name and password to the modem unless you purchase the modem and line directly from them.

Every company is different, but it does not hurt to ask...

If you connect your laptop directly to the modem and try to surf the internet you will see very quickly that you cannot get out. That is because you will have to set a static IP on the network connection. This is the information that you requested from the ISP earlier.

Once you set the IP, Subnet and Gateway you should then be able to surf the net.

Use the gateway address as your entry into the modem by entering it into your web browser and you will be prompted for the modems user name and password.

Some Verizon and Embarq ISP modems (Westell 6100 series) will use the admin, 1234 user name and password scheme, but it is rare. Usually they are set to a company specific user name and password scheme like youcompany@att.dsl.net. They all are different.