RJ stands for registered jack. There are a no. of RJ's that we use for e.g., RJ-9 ,RJ-11 RJ-12, RJ-45, RJ-48 etc
RJ stands for Registered Jack commonly used in Ethernet networking. The Ethernet cables has RJ45 connectors at both the ends.
There are RJ-11, RJ-12, and RJ-45 connectors. RJ-11 is typically used for telephone lines, while RJ-45 is used for NICs.
T1 or ISDN data circuits. Wire pairs 1,2,4, and 5 are used. One pair for transmit, one pair for receive.
RJ 15
RJ-45 Ethernet, RJ-11 Modem
RJ-11 is a standard telephone (non voice over IP)
rj11
RJ-11 Is typically used for ADSL lines here in the UK, and maybe in Europe too.
Cat5 cable is the standard cable for computer networking. The "RJ" in RJ15 stands for registered jack. This is the part at the end of a cable that can be used to connect them to computers, phones, etc.
Ethernet cable is RJ 45. Dial-up modem is RJ 11
RJ in Chinese means RJ