C3VoIP-150 Analog Telephone Adapter (ATA) VoIP Gateway with PoE - WirelessUnits.com
Cisco ATA 191 - VoIP phone adapter - ATA191-K9 - Phone Accessories - CDW.com
Best Buy: ObiHai VoIP Telephone Adapter OBI200
Amazon.com : VoIP Gateway, PAP2T-NA PAP2T 2 Ports Internet Phone Adapter, with Power Adapter, Comes with RJ-45 Network Cable, for Linksys, Support SIP V2 Protocol : Office Products
VoIP Gateway Micro-Analog Telephone Adapter | SmartNode M-ATA