Difference Between RJ10, RJ11, RJ12 & RJ45 in Tabular Form

S.No.Basic TermsRJ10RJ11RJ12RJ45
1.Full FormRegistered Jack 10Registered Jack 11Registered Jack 12Registered Jack 45
2.Looks Like

4p4c
4p4c

6p2c
6p2c

6p6c
6p6c

8p8c
8p8c
3.Wires4268
4.UseTelephone Handset cables.ADSL, telephone, and modem cables etcSystem phonesNetwork Wiring
5.Category Cat 1,cat2Cat3Cat3 ,cat4 or Cat 5Cat 5, 5e, Cat 6, 6a, 7 and Cat 8
6.SignalsanalogAnaloganalogDigital
7.Size 7.62mm9.6mm9.65mm11.68mm
8.Connects4p4c6p2c6p6c8p8c
9.SpeedsIts Contain only mic and speaker.
Speed not Matter.
around 20mbps down to around 14mbpsNot identified.CAT8 cables can support
25Gbps / 40Gbps speeds.
10.POE SupportNoNoNoYes
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