3.5mm Plug Jack to Rj9 for Iphone Headset to for Cisco Phone Cable

3.5mm TRRS female jack. 4P4C male plugUse your existing i Phone/ P a d, or similar TRRS headset with your Cisco-based phoneAvoid having to purchase an expensive Cisco headsetGreat for home businesses, offices, call centers, and moreEliminates the need to have more than one headsetFor CISCO IP phone headset jack for models: 6921, 6941, 6961, 7931G, 7940, 7941G, 7942G, 7945G, 7960, 7961, 7961G, 7962G, 7965G, 7970, 7971, 7971G, 7975, 7975G, 7985, 7985G, 8941, 8945, 8945G, 8961, 8961, 9951, 9971,etc. P LANTRONICS M10, M12, M22 & MX10 Vista.100% brand new and high qualityType: 3.55mm earphone to RJ9 phone adapterColor: BlackMaterial: ABS+PCLength: 31cmPackage Contents: 3 x Headset Jack to RJ9 CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.