RJ11

An RJ11 is a small, rectangular connector used primarily for telephone lines. It typically has four or six tiny metal contacts inside that connect to wires carrying voice signals. Think of it as a plug that fits into a dedicated socket on your phone or modem, allowing communication over traditional landline phone systems. The RJ11 standard ensures compatibility and secure connections for telephony devices. While used mainly for phones, similar connectors exist for other applications, but RJ11 is most common in home and office phone setups.