Telephone cables can also be called telephone plugs. The most common standard is known as the RJ11 male connector, or modular connector, in most countries today. These plugs connect a telephone to the telephone wiring, which then connects to a local telephone network. The male plug connects to the female telephone jack, which is often affixed to a wall or baseboard.
Wisegeek says this:
Most RJ11 socket wiring uses what are referred to as three and four pin connectors to transmit electrical currents through telephone wiring. There are several different types of RJ11 socket connections. While the most standard is the phone jack on the interior wall of a building that phone subscribers plug a handset into, sockets also exist to connect telephone cable from a computer to a modem device. In addition, older telephone sets may have RJ11 sockets that connect wiring from a receiver to a dialing base. Telephone wiring adapters and splitters also contain RJ11 sockets.
Connects wall-mount phones to wall jack, or other phone devices
Helps maintain clearer conversations with plating
Handles up to 2 separate phone lines
Connector 1: RJ45 (8P8C) Straight
Connector 2: RJ45 (8P8C) Straight
Constructed from heavy-duty 28 AWG silver satin wire, this cable has gold-plated connectors for clearer communication. Its 4-wire construction handles dual phone lines while the heavy-duty PVC jacket protects the cable’s integrity.
Connector 1: RJ11 (6P4C) Male
Connector 2: RJ11 (6P4C) Male