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Modular Adapters

Adapters

Modular adapters eliminate the need for conventional, bulky, data communications cabling in RS232/X.21 environments, relying instead on standard UTP wiring schemes. Perfectly suited for moves, adds, and changes, once attached to your hardware, changing out cables is as simple as plugging, and un-plugging an RJ45.

DB assemblies are used for many different applications in the telecommunication industry

The data interface for each DB connector:

  • DB9 - RS232
  • DB15 - X.21
  • DB25 - RS530/232
  • DB37 - RS449

RJ45 to DB9 Male
Adapter Yellow

RJ45 to DB25 Male
Adapter Grey

RJ45 to DB25 Male
Adapter Red

DB25 Adapter
rear view

RJ45 to DB15 Female
Adapter Grey

RJ45 to DB25 Female
Adapter Blue

1. CONNECTOR TYPE (DB9, DB15, DB25, etc.)?
2. CONNECTOR GENDER (MALE or FEMALE)?
3. MODULAR JACK (RJ11 or RJ45)?
4. COLOR?
5. PIN-OUT?

Modular adapters are a very important component in the toolkit of every network installer or technician. Modular adapters are paramount in testing and using tone generators or continuity testers. 

The EIA/TIA-568 standard has two schemes for how to implement modular connections—T568A and T568B. These standards establish the color code patterns in modular interconnects.

Standard EIA/TIA T568A

Pin #

Wire Color

Wire Function

1

White/Green

Transmit pair 3

2

Green

Receive pair 3

3

White/Orange

Transmit pair 2

4

Blue

Receive pair 1

5

White/Blue

Transmit pair 1

6

Orange

Receive pair 2

7

White/Brown

Transmit pair 4

8

Brown

Receive pair 4

Standard EIA/TIA T568B

Pin #

Wire Color

Wire Function

1

White/Orange

Transmit pair 2

2

Orange

Receive pair 2

3

White/Green

Transmit pair 3

4

Blue

Receive pair 1

5

White/Blue

Transmit pair 1

6

Green

Receive pair 3

7

White/Brown

Transmit pair 4

8

Brown

Receive pair 4

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