RJ9 4P4C Telephone Handset Cord Clear call quality and durability: designed to enhance transmission and extend the life of the handset cord. Uncoiled landline cord: complete landline handset cord for easy routing between base and handset. Versatile compatibility: RJ9, RJ11, and RJ22 with 4P4C connectors; suitable as a handset cord for a wide range of landline telephones. Functional design: used to connect telephone landlines and receiver handles; standard receiver cable configuration. Brandwide compatibility: suitable for all brands of telephones; uniform receiver cable construction for consistent performance. Use scenarios: Replacing a worn or damaged handset cord at home or in an office. Setting up a desk phone in environments with multiple telephone brands. Keeping an onhand spare cord for maintenance or quick troubleshooting.