This RJ9 Y-type training splitter cable features one RJ9 male plug and two RJ9 female jacks, specially designed for customer service training, call center supervision and teaching scenarios. Just plug the male end into the headset port of your IP desk phone, then connect two RJ9 headsets to the dual female ports, allowing supervisors and trainees to listen to the same call simultaneously.

High-purity copper internal wiring and integrated shielding eliminate audio interference, maintaining crisp two-way voice communication without buzzing, distortion or volume loss during long-hour business calls. Durable plastic connectors with tight metal pins avoid loose connection from frequent plugging and unplugging.

No complicated installation or configuration required. Widely applicable for Avaya, Yealink and other RJ9 port IP office phones. This headset split extension cord is a must-have wiring accessory for call centers, reception desks and corporate customer service training rooms.