Interface: 3.5mm TRRS (Female) rj-9 4P4C (Male). Use PC Headset with most VOIP phones that have a RJ9 headset jack (Not for RJ11). Adapter cable with 3.5mm Headset jack to RJ9 Desk Phones Jack forCisco and more.
5M METRE 4P4C RJ9 RJ10 RJ22 MALE TO MALE CROSS-OVER TELEPHONE HANDSET CABLE
RJ9 RJ10 RJ22 4P4C Coiled Handset Telephone Cable Male to Male 2m
Telephone Handset Cable RJ10 to RJ10 (4P4C) Coiled Curly Lead Cord Wire BLACK
RJ10 to RJ10 4P4C Coiled Telephone Handset Cable Curly Lead Cord Wire White 6.4m
Telephone Handset Cable RJ10 to RJ10 4P4C Coiled Curly Lead Cord Wire Black 5m
Telephone Handset Cable RJ10 to RJ10 4P4C Coiled Curly Lead Cord Wire White 5m
