SN5551/2BIS2JS4VHP/EUI

SmartNode eSBC, 2 BRI, 2FXS, 4 VoIP Calls upgradeable (max. 6), or 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200), 2 Transcoded SIP Sessions (max. 4), SIP-TLS, SRTP, High Precision 5ppm Clock, 2x Gig Ethernet, 1x USB port, external UI power (100–240