... hotline and warm VoIP Gateway : Linksys Phone Adapter SPA3102,VoIP Gateway,IP ATA-unlock hot sale VoIP gateway : Description: ... interoperable with common telephony equipment like facsimile, voicemail, PBX/KTS and interactive voice response systems. The SPA2102 ... Network / Transport Protocol TCP/IP, UDP/IP, ICMP/IP, PPPoE Remote Management Protocol HTTP, HTTPS VoIP Protocols SIP v2 Telephony Interfaces ...