SN4970A/4E120VRHP/EUI

SmartNode VoIP GW, 4 E1/T1 PRI, 120 VoIP Calls not upgradable, or 15 SIP-SIP Calls (SIP b2b UA) upgradable (max. 80), failover relay, High Precision 5ppm Clock, optional SIP-TLS, SRTP, 1x Gig Ethernet, external UI power (100–240 VAC) NA/EU