Difference between RJ45 and RJ48

Key Difference: RJ, short for Registered Jack, is used in telecommunications systems. RJ45 is a connector designed for Ethernet Networks where 4 pairs of copper wire are used, signaling on RJ45. On the other hand, RJ48 is a registered jack, which is used for T1 and ISDN termination.

Only the one who is involved in Networking Field can identify RJ45 and RJ48 connector and its uses. They both use 8P8C modular plug and 2 pairs of wire, one for transmitting and one for receiving. The RJ45 is a connector term designed for Ethernet Networks. It is a connector mainly used for telephone cables. RJ48 is the same as RJ45. The difference can be seen in the way they are wired. RJ45 and RJ48 transmit digital data according to their pin connectors.

Comparison between RJ45 and RJ48:

 

RJ45

RJ48

Description

RJ45 is a connector designed for Ethernet Networks where 4 pairs of copper wire are used, signaling on RJ45.

RJ48 is a registered jack used for T1 and ISDN termination.

Connector Pins

Uses pin 1, 2, 3, 6 for receiving and transmitting

Uses pin 1, 2, 4, 5 or 1, 2, 7, and 8 for receiving and transmitting

Used

LAN area – short distance

WAN links such as T1 and E1 links

Cable

UTP cables

STP cables

Jack

RJ45 will mate with a RJ48 jack

RJ48 jack has an extra tab so that RJ48 plug will not push into RJ45 jack.

Line

Single line

Multi line and flush mount

Twisted pairs

Accommodates unshielded twisted pairs (UTP)

Accommodates shielded twisted pair (STP)

Width (positions)

8 position

10 position

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Comments

I am electioneer. I use these connectors for Phi 9 servers. your article helped me. Thanks a Lot!

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