Patton SN4171/1E30VHP/EUI Digital E1/T1 Gateway - 30 VoIP Calls
SmartNode VoIP GW; 1 E1/T1 PRI; 30 VoIP Calls not upgreadable; 15 SIP-SIP Calls (SIP b2b UA) upgradeable (max. 200); High Precision 5ppm Clock;optional SIP-TLS; SRTP; 1x Gig Ethernet; 1x USB port; external UI power (100–240 VAC) NA/EU