★[3.5mm to RJ9 adapter]: 3.5 to rj9 adapter 3.5mm Headphone Converter to Office Telephone IP Phones ★[RJ9 To 3.5mm]:This headphone headset jack adapter will allow you to use your smartphone, gaming and PC / laptop headsets with 3.5mm plugs on your Ciscoo telephones.
★[IMPORTANT 1]: This adapter compatible with 3.5mm jack TRRS headset only. Welcome to send your picture of headphone jack to our customer service for further advise.
★[IMPORTANT 2]: Not For Cisco 7902, 7905, 7910, 7911, 7912, 7920, 7921 Phones.
★[Note]: The 3.5mm jack adopts the CTIA standard, So 3.5mm headphones with OMTP circuit cannot be used normally.
★[Note]: This cable is compatible only with the Ciscoo specified in above model( not 100%),please kindly check and confirm before buying. DO NOT BUY THE ITEM IF YOU CAN NOT FIND YOUR PHONE MODEL IN LISTS, WELCOME TO CONTACT US FOR FURTHER ADVICE.
★[Important Note]:If the following issues occur, please directly request a return and refund: 1. If the phone model is incompatible, the following issues may occur: 1) Both the microphone and speaker will not work, so you cannot hear or speak. 2) The microphone volume is low, the speaker volume is low, and it is difficult to hear. 2. If the 3.5mm headset circuitry is incompatible: the microphone will not work for speaking.