Standard protocols such as：ARP/UDPITCP/IP/IPV4/IPV6/DHCP/STUN/HTTP/HTTPSISIP/DTMF/RTP/SNMPLLDP,802.1xNAT,VAD,CNG,AGC,CDP,LLDP

Support for Signaling Encryption：TLS,AES，OPEN VPN

Support for Voice Encryption：SRTP,VLAN QoS(802.p)

Standard voice codecs：G729/G711a/G711u/G.722(HD Voice)/G.726,iLBC

Capable of configuring the following SIP Parameter：SIP username / SIP password / SIP domain / SIP Port(UDPTCP)RTP Port / SIP Primary Proxy IP / SIP Secondary Proxy IP