Amazon has the Obihai OBi200 1-Port VoIP Adapter with Google Voice & Fax Support in $39.93 with free shipping.
Product Features:
- Works with Google Voice.
- Easy to Set-Up Using OBitalk.com.
- USB for Polycom accessories OBiWIFi5G and OBiBT.
- Supports T.38 Fax and Bring Your Own Device SIP Services like Anveo, Callcentric, Voip.ms, etc.
- Works with up to Four(4) VoIP Services Across One(1) Phone Port.