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Audio characteristics

· Narrowband speech coding: G.711a/u, G.723.1, G.726-32K, G.729AB. Wideband speech coding: G.722

· Voice activation detection/silence suppression

Network characteristics

· Support SIP 2.0, TCP/IP, UDP, DHCP.

· Support primary DNS and secondary DNS server

· Support VLAN

· Support SNTP client

· Support VPN L2TP / PPTP

· Support SRTP

· Support webpage HTTP/HTTPS

· Support Qos: 802.1 p/q, DSCP

· Support MOS authentication

· DHCP /static/ PPPoE

· STUN

Configuration and management

· Via FTP/TFTP/HTTP/HTTPS/DHCP OPT66/SIP PNP/TR069 for Auto-Provisioning

· Web management interface

· Web-based Packet -dump

· Configuration export/import

· Software upgrade

· System Work Log (Syslog)