Patton SN5531 2-Port ISDN BRI VoIP Gateway – 4 Channels, 1x GbE for BRI-to-SIP Migration (SN5531/2BIS4VRHP/EUI)

SmartNode E-SBC, 2 BRI, 4 VoIP Calls, or 4 SIP Sessions (SIP b2b UA) upgradeable (max. 200), 2 Transcoded Calls (max 4), SIP-TLS, SRTP, High Precision 5ppm Clock, Fallback Relay, 2x Gig Ethernet, 1x USB port, external UI power (100?240 VAC) NA/EU