This vintage telephone adapter allows you to connect your old-fashioned four-prong phone to a modern modular RJ-11 wall outlet. Crafted in Taiwan, the 7-inch black cord features a four-prong connector on one end and a modular plug on the other, enabling seamless integration of classic landline phones into contemporary setups. While designed for traditional landlines, compatibility with VoIP services should be verified prior to use, as some providers may not support pulse dialing. Embrace nostalgia and functionality with this versatile adapter.