Cat5, Cat5e, Cat6 cable is frequently used for wiring telephone jacks. You can send up to 4 telephone lines on one 4 pair cable that terminates at a RJ45 (8P8C) jack. The problem is most phones, even multi-line phones, dont directly plug into an RJ45 jack. Well discuss some options for connecting phones with RJ11 connectors to an RJ45 port.
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- It needs to have a male RJ45 on one side and 2 female RJ11s on the other. Taking a close look at the wiring diagram it appears to follow T568B on the RJ45 side. You can still use it with T568A pinouts but line 2 and 3 will be swapped.
MY Lorex LNB4321 camera stopped working, it had gotten water in the cable connection and the female RJ45 molded end had corroded away. I called Lorex but they wouldn't tell me the pin out to replace the end. I know the red and black go to the power plug but I need to know the which cat5 wire corresponds with the wires from the camera.
Jack Configuration
Telephone Jack
Connecting Standard 4-Line Phone to RJ45 Jack
RJ45 4-line to 2 RJ11 2-Line Adapter
There are a number of different splitters (usually named 400E) like this Suttle 400E Cat5 Splitter that plug into the RJ45 Jack and have 2 RJ11 jacks each with 2 lines. These are fairly easy to find but just make sure youre not getting a regular telephone splitter (1 RJ11 to 2 RJ11). It needs to have a male RJ45 on one side and 2 female RJ11s on the other.Taking a close look at the wiring diagram it appears to follow T568B on the RJ45 side. You can still use it with T568A pinouts but line 2 and 3 will be swapped. If your phone jacks pinouts follow USOC this adapter wont work.
Break Out Cable
Break Out Box
DIY RJ45 to RJ11 Break Out Box
If you cant find the break out box above or have special needs you can make your own break out box.You can make one anyway youd like but to give you an example lets make a a 4 port box that takes an incoming cable and splits it up to L1&2, L2&1, L3&4, L4&3 similar to the Leviton.
Well need:
- A 4-port surface mount keystone box (C&E Blank Surface Mount Box for Keystones, 4 Hole, White (CNE43705))
- 4 Phone jack keystone ports (like these ONQ / Legrand F9042WHV5 RJ25 Phone Jack, White, 5Pack)
- 1 RJ45 Connector.
- Punch down tool with 110 cutting and non cutting blade
- Modular Plug crimper
- Screwdriver
With this configuration we can connect:
- 4 separate 1-line phones to one RJ45 jack to access all 4 lines.
- 4 2-line phones
- 2 2-line phones
- or some other variations like one 4-line phone a fax machine and a single line phone.
Step 1: Strip cable
Step 2: L2&1 Jack
Step 3: L1&2 Jack
Step 4: L3&4 Jack
Rj45 Female Pinout Diagram Types
Step 5: L4&3 Jack
< div>The last jack is the lines 4 and 3 jack. Well punch the green pair to pins 2&5 and the brown pair to pins 3&4 using the cutting 110 punch down blade.RJ45 Ethernet Cable Pinout
Ethernet LAN cables can come in two different types – Crossover or Straight through. Most modern communications equipment can auto sense which type you are using, but some still need the correct cable pinout. The following are the pinouts for the RJ45 connectors so you can check which one you have or make up your own. It doesn’t matter if you are making up some Cat5e, Cat6 and Cat7 cables the pinout is always the same for Ethernet cables.
Straight Through LAN Cable Pinout
Straight through LAN cables are the most common and the pinout is the same if they are Cat5e, Cat6 or Cat 7. The different types of cables (category or cat) offer increasingly faster transmit and receive speeds, this is achieved by increasing the wire twists, better shielding, drain wire and increased wire diameter.
There are two different pinout standards used worldwide and depending on your location will determine which one you should use. An easy way to remember the two different RJ45 connector pinouts is T568A is used in America and Asia and the T568B is used in Britain(UK) and Europe. The different pinouts will still work if you mix them up.
- T-568A – Most commonly used in the USA and Asia – Just think A for America
- T-568B – Britain (UK) and Europe
RJ45 Pinout for a LAN Cable
- Pin 1 → White and Green (Transmit +) wire
- Pin 2 → Green (Transmit -) wire
- Pin 3 → White and Orange (Receive +) wire
- Pin 4 → Blue wire
- Pin 5 → White and Blue wire
- Pin 6 → Orange (Receive -) wire
- Pin 7 → White and Brown wire
- Pin 8 → Brown wire
Remember that Pin 1 is on the left hand side of the RJ45 connector with the clip at the rear.
Crossover Ethernet Cable
Crossover Ethernet cables are used to connect two devices of the same type together. Like you want to connect two routers or two PCs. Most modern IT equipment can auto detect that a crossover needs to be made and makes changes to the signal, this is called MDI-X. A crossover LAN cable will connect the receive at one end to the transmit at the other. Care must be taken to clearly identify a crossover cable so it is not used by mistake as this may cause network outages. These cables are sometimes made with cable that has a red outer sheath.
RJ45 Pinout for a Crossover LAN Cable
- Pin 1 ← White and Green wire → Pin 3
- Pin 2 ← Green wire → Pin 6
- Pin 3 ← White and Orange wire → Pin 1
- Pin 4 ← Blue wire → Pin 4
- Pin 5 ← White and blue wire → Pin 5
- Pin 6 ← Orange wire → Pin 2
- Pin 7 ← White and Brown wire → Pin 7
- Pin 8 ← Brown wire → Pin 8
How to Crimp a RJ45 Ethernet Cable
Follow these steps to make sure you make the perfectly crimped RJ45 connector:
- Trim the outer sheath back about 10mm to expose the inner conductors.
- Trim off any nylon strands or wire guides
- Straighten the wires
- Sort them out to the correct colour codes for the pinout
- Snip the wires so they are all the same length
- Push the wires in to the connector
- Make sure the outer sheath in inside the RJ45 crimp
- Crimp the connector
- Test the Ethernet cable
Rj45 Female Pinout Diagram Unlabeled
What is the Maximum Length of a Ethernet Cable?
The recommended maximum length for any structured cabling is 100m. This includes 5m of patch cables at either end of the cable run so the actual distance for the fixed cabling is 90m. Anything over this distance then you will start to introduce interference and losses on the cable and this will be seen as errors, dropped traffic packets and reduced throughput.
Structured Cabling = 90m
LAN Patch Cables = 2 x 5m
Rj45 Pinout T568b
It’s good installation practice to keep the cable runs as short as possible and not to leave unnecessary excessive service loops of cable.
What pins does Ethernet use?
An Ethernet cable RJ45 connector has 8 pins. Pins 1 & 2 (green) and pins 3 & 6 (orange) are used for data communications while pins 4 & 5 (blue) and pins 7 & 8 (brown) are not used.
How many pins does Ethernet use in a RJ45 connector?
An Ethernet cables uses a RJ45 connector that has 8 pins. Pin 1 is on the left hand side while holding the connector with the tab facing away from you.
What is the maximum length of an Ethernet cable?
The maximum length of any Ethernet cable (Cat 5, Cat 6 or Cat 7) is 100m or 328ft before any loss of traffic occurs. Over 100m the traffic will start to get errors and reduced speeds.
What is a RJ45 connector?
Rj 45 Diagram
A RG45 connector is commonly used on an Ethernet cable in computer networks. RG45 stands for Registered Jack No.45, has 8 pins and is crimped on to the cable.