...according to page 28 in the user guide here http://cisco.biz/en/US/docs/voice_ip_comm/csbpipp/ip_phones/user/guide/spa300-500-uc320w/SPA300-500-UC320W_UG_78-19372.pdf it's not supposed to be there. For the rest of the 50x-series and 9xx-series it's there, but not for the 525G/G2. This is quite troublesome when used with autoanswer. The phone remembers your last choice of audio device as long as it's booted but it occasionally reboots and that seem to set the default device back to speaker. Quite troublesome in a callcenter environment where all pickups are done via auto answer from a desktop application. Is there any way of setting this in the 525G/G2 to always be headset?