I don't think you can answer by voice with "Hey Siri" but am open to hearing otherwise.

There are a few plantronics headsets that allow for voice activated answering via  BT earpiece.  For example:
http://www.amazon.com/Plantronics-M165-Marque-Ultralight-Bluetooth/dp/B0093TSSGW/ref=sr_1_1?ie=UTF8&qid=1435702514&sr=8-1&keywords=plantronics+voice+answer

"manage your calls without pressing buttons - just say "Answer" or "Ignore"."

But nothing that I know lets you hang up by voice.  And you still need to push a button or the earpiece to activate Siri if device is not plugged in allowing for "Hey SIri".  Also, probably bears testing if the earpiece is connected to make sure Hey Siri still works.

Ed Hitchcock OT/L
Technology Center
Rehabilitation Institute of Chicago

-----Original Message-----
From: xxxxxx@alsa.simplelists.com [mailto:xxxxxx@alsa.simplelists.com] On Behalf Of Alisa Brownlee
Sent: Tuesday, June 30, 2015 4:17 PM
To: at listserv
Subject: Hey Siri

Question. I know people can make calls with "Hey Siri" but can they answer a call? If not is there a work around for someone w/ no hand function but a clear voice?
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