Yes, except the following:
-Message Waiting Indication
-Anonymous Call
-Block Anonymous Call
-Caller ID Spoofing
-Caller ID Name (OBi only shows number)
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For 3-way calls, 3-way conference, Call-waiting, and call transfer, that
involve 2 GV calls, you need to setup 2 GV accounts, on SP1 and SP2, since device only supports 1 call at a time per GV account.
Similarly, to call forward a GV call to another GV number, you also need 2
GV accounts.
These features are offered by the OBi device.
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For Google Voice features, better check out Google Voice official website.