SmartNode VoIP Gateway, 16 FXS on RJ21-50pin, K.21 basic surge protection, 16 VoIP Calls, upgradeable to eSBC (max. 200 SIP calls), Optional SIP-TLS/SRTP, Optional Transcoding (max. 8 calls), 2x Gig Ethernet, 1x USB, 1x Console, Redundant 48V DC Power
