- Supports SIP and IMS protocols - Up to 500 routing and call number transformation rules - Dual-redundant Ethernet ports - Dual AC/DC power supplies (optional) - Up to 512 SIP trunks - TLS/SRTP - Voice VLAN - Remote access via the Redstone Cloud* - Management with the Redstone or third-party Remote Device - Management Systems (TR-069 SNMP) - Interoperability with popular SIP servers such as Cisco Unified CallManager/CUCM Broadsoft Microsoft Skype for Business (Lync) and Asterisk/Elastix - Class I lightning protection