Amazon.com: 2-Port VoIP SIP Phone Adapter - GT202 Wireless Router, Supports WiFi Asterisk ATA VOS FXS Fax. Suitable for Home or Business (Black) : Office Products
DoorKing 1815-578 VoIP Adapter Kit
Voip.ms Compatible Devices | Voip Cell Phone Service | Free Voip Phone Service - Voip Ip - Aliexpress
Obihai OBi302 VoIP Adapter | eBay
WiFi adapter for VoIP phones
OBi200 - Google Voice VoIP Adapter | Poly, formerly Plantronics & Polycom
HT813 Grandstream Networks | Analog to Voip Converter ATA (1) FXS �... | Unisol