... + 1 Ethernet 2.Supported Protocols: SIP 3.fast shippment SPA1001 Unlocked Linksys VoIP Gateways ,voip Phone Adapter Procuts Name: VoIP ... , Selective / Anonymous Call Rejection8. Hot Line and Warm Line Calling SPA1001 Unlocked Linksys VoIP Gateways ,voip Phone Adapter