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RJ-45

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**RJ-45**

What is RJ-45?

RJ-45 (Registered Jack 45) is a standardized physical interface used for connecting networking hardware, such as computers, routers, and switches, to Ethernet networks. It is an 8-position, 8-contact (8P8C) modular connector, commonly used for terminating twisted pair cables like Cat5e, Cat6, and Cat6a. RJ-45 connectors are used for data transmission, supporting speeds from 10 Mbps to 10 Gbps or higher, depending on the cabling and networking equipment used.

Find 134 organizations using RJ-45 on Sumble →

What other technologies are related to RJ-45?

RJ-45 Competitor Technologies

RJ-11
No summary available
RJ-11 is used for telephone connections, while RJ-45 is used for data networking. Although in the same connector family they serve different purposes.
DB-25
No summary available
DB-25 is an older connector type that can be used for serial communication, an alternative to Ethernet using RJ-45, though now mostly obsolete.
Fractional T-1
No summary available
Fractional T-1 is a form of telecommunication line, now largely superseded by faster, packet-switched technologies such as Ethernet over RJ-45.
SONET Network Technology
No summary available
SONET provides high-speed digital transport. Can be a competitor in backbone networks.
RS-449
No summary available
RS-449 is a serial interface standard. It is a data communication standard different than using RJ-45 with ethernet.
V.35
No summary available
V.35 is a synchronous serial interface used for connecting to wide area networks (WANs). In some cases, it competes with Ethernet (RJ-45) connections.
Private Line
A dedicated communication channel, a private line is an alternative to Ethernet connections.
DB type connectors
No summary available
DB connectors are alternative interfaces for various communication purposes, different from RJ-45-based networking.
Number of organizations that mention technology
134
RJ-45
29
RJ-11
11
DB-25
15
Fractional T-1
16
SONET Network Technology
32
RS-449
41
V.35
78
Private Line
6
DB type connectors
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RJ-45 Complementary Technologies

Multiplexes
No summary available
Multiplexing allows multiple signals to be sent over a single physical channel, which can be used in conjunction with RJ-45 networks.
Digital Testing (BERT)
No summary available
Bit Error Rate Testing is a method to test digital circuits, and may apply to the equipment attached to RJ-45 networks.
Voice and Data applications
No summary available
RJ-45 based networks support both voice and data applications, especially with VoIP technologies.
Number of organizations that mention technology
134
RJ-45
16
Multiplexes
6
Digital Testing (BERT)
5
Voice and Data applications
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Which job functions commonly mention RJ-45?

Electrician
0.1% of all Electrician jobs mention RJ-45
View 74 jobs on Sumble
Network Administrator
16 Network Administrator jobs mention RJ-45
View 16 jobs on Sumble
Communications
37 Communications jobs mention RJ-45
View 37 jobs on Sumble
Construction
78 Construction jobs mention RJ-45
View 78 jobs on Sumble
Customer Engineer
29 Customer Engineer jobs mention RJ-45
View 29 jobs on Sumble
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