Landline Phone Headset with Microphone Noise Cancelling, RJ9 Telephone Headset f

【COMPATIBLE LIST FOR YEALINK IP PHONES】: RJ9 connectivity to Yealink IP phones, including SIP-T19P T20P, T21P, T22P, T26P, T27P T28P, T23G T27G T29G T32G, T33G T38G, T40P, T40G, T41P, T41G, T41S, T42S, T42G, T46G, T48G, T48S, T49G T53W T54W T56A T57W T58A etc.

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