Function: Used for connecting a landline telephone base to the handset receiver. Provides a reliable replacement when the original cord is worn or damaged. Compatibility: RJ9 4P4C connectors on both ends. Suitable for telephone accessories and handsets using the RJ9 4P4C standard, with compatibility implied for RJ11 and RJ22 4P4C configurations. Design and construction: Uncoiled completed handset cord with spring/coil wire construction. Built for flexibility, durability, and ease of installation. Performance: Delivers clear call quality and enhanced transmission through a sturdy, durable connection between handset and base. What you get: A readytoinstall handset cord with standard RJ9 4P4C connectors on both ends. No additional adapters required. Use scenarios: Home: a frayed or malfunctioning handset cord on a landline phone. Office: Set up a desk phone with a reliable, easytoconnect handset cord. Maintenance/: Use as a spare part for telecommunications equipment that uses RJ9 4P4C handsets. Attributes to note: Function (handsettobase connection), compatibility (RJ9 4P4C; RJ11/RJ22 4P4C configurations referenced), material (flexible coil/spring wire), performance (clear calls, durable transmission).