Purpose: Connects the telephone base to the handset to enable standard landline operation. Compatibility: RJ9 4P4C handset connector compatible with most traditional landline phones and handsets. Construction: Uncoiled handset cord built with durable spring wire and coil wire insulation for reliable signal transmission and long service life. Performance: Provides clear call quality and robust durability for daily use. Size and fit: Standard length suitable for typical desk setups and office/home environments. Easy installation: Simple plugandplay connection by inserting into RJ9 4P4C ports on both ends. Use scenarios: Replacing a worn or damaged handset cord on a desk phone in an office. Replacing or upgrading the handset cord for a home office or landline setup. Replacing cords at reception desks or call centers to maintain uninterrupted customer service. Notes: This is a landline handset cord described as a landline receiver line, telephone line, and accessory, designed to enhance transmission and durability while maintaining clear calls.