Convert 2.5mm plug to CISCO phone 4P4C RJ9/RJ10 headset plug.Compatible CISCO phones:7940, 7940G, 7941, 7941G, 7942, 7942G, 7945, 7945G, 7960, 7960G, 7961, 7961G, 7962, 7962G, 7965, 7965G, 7970, 7970G, 7971, 7971G, 7975, 7975G 6921, 6941, 6945, 6961, 7821, 7841, 7861 8811 8841 8851 8861 8941, 8945, 8961, 9951, 9971
Save money by buying standard phone headsets to use with your Cisco phone headset jack
NOT FOR CISCO 7911 7912 etc that do not have the RJ9 Headset Jack,
Does not work with RJ11 jack, which is wider than your handset or headset jack (6 positions vs. 4). RJ11 jack is what is in the wall. RJ9, RJ10, RJ22 are what is on your phone handset or headset.
Works Only with CISCO Phones,please See Compatilbe Lists below

Technical Details

Product Details

Package Dimensions
Width : 3.5 inch
Height : 0.51 inch
Length : 4.49 inch

Shipping Weight: 6.4 ounce (View shipping rates and policies)

ASIN : B01N2UQVJE