Comdio H103VG4 Mono Call Center Telephone Headset Headphone with Mic + Volume Mute Control for Grandstream IP Phones GXP1400 GXP1405 GXP1450 GXP2124 GXP2120 GXP2140 GXP2140 GXP2160 GXP2110 GXP2100

Works for Phones:
AltiGen IP805
Avaya 1608, 1616, 9620, 9630, 9640, 9640G and 9650 IP Phones
Cisco 7902, 7905, 7905G, 7906G, 7910, 7910+SW 7911, 7912 IP Phones
Cortelco Fanvil C58, C58P C62, C66
Grandstream GXP14XX, GXP1400 GXP1405 GXP1450
GXP2124, GXP2120, GXP2140 GXP2140 GXP2160 GXP2110, GXP2100, GXP2020, GXP2010, GXP1200, GXP280, GXP285, GXV3005, GXV3006, GXV3240 GXV3275 IP Phones
Huawei ET325,ET525
Panasonic KX-T Series phones such as: KX-T2260, KX-T2310, KX-T2315, KX-T2365, KX-T2368, KX-T7220, KX-T7230, KX-T7330, KX-T7433, KX-T7665, KX-T7720, KX-T7740 and KX-T7750
Snom 300, 320,360,370,710, 720,760, 820, 821, 870
Yealink SIP-T19P T20P, T21P, T22P, T26P, T28P, T32G, T41P, T38G, T42G, T46G, T48G