Landline handset cord with spring and coil wire design for connecting the telephone base to the handset RJ9 4P4C connectors on the handset end; compatible with RJ11 and RJ22 4P4C sockets Uncoiled, completed landline telephone handset cord suitable for connecting telephone landlines and receiver handles The telephone receiver cable is suitable for all brands of telephones, with a uniform receiver cable Easy to install and worn or damaged cords, providing a reliable connection for voice transmission Use scenarios Replacing a worn or damaged handset cord on a home or small office landline phone Providing a standard replacement cord for desk phones in an office environment Keeping a spare handset cord on hand in hotels, guest rooms, or facilities with multiple phone brands Key attributes: function to connect handset to landline base, compatibility with various brands and sockets (RJ9 4P4C, RJ11, RJ22 4P4C), universal applicability, durable design for everyday use