DSL internet often depends on RJ-11 connections to deliver service from the wall jack to the modem. The same cable that carries voice can also carry data, thanks to frequency separation. This makes RJ-11 a crucial part of many internet setups. Properly shielding and maintaining the cable helps prevent interference. Using the right filters ensures that phone calls remain clear while ke... https://enableit.com/differences-between-rj11-rj12/