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That was my first thought also, but there is no option under phones. All I have I have is remove line. If I view the properties of the phone number It does say, Number type: Voice with no options, but i am still getting faxes.

Ok, So I was looking in the wrong place. I was looking at the hot desk extension and not the logged in user's extension that was receiving the fax. Just got a little confused. 

Ok, Thank you Saadet. I will contact them. 

Hmmm...I know Support can turn off the Fax line for a device on the back end. That might work.

USA-based acct | 2287 Users | 3800 DID lines | 28 sites | all Polycom VVX500 phone handsets

To piggy back on Lee's request, we want a way to turn off faxing to all Courtesy Phones and Common Area Phones which are not "User" assigned phones - only used for outgoing calls. 

Please VOTE for this if it gets re-categorized as an Idea

Gordon is correct, that should work. Unfortunately I don't have a hotdesk phone on my test account so I can't verify. Let us know how it goes, Lee!

Lee, I thought you could specify the phone as voice only instead of Voice and Fax.
Under Phone System --> Phone Numbers, select the direct phone number and then change the number type to Voice Only.
Perhaps someone can clarify if this is the correct function