Voice Functions and Features
·Protocol: SIP 2.0 (RFC 3261)
·Codec: G.711, G.723.1, G.726, G.728, G.729A/B,iLBC
·Powerful digital signal processing (DSP)
·Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)
·Voice activity detection (VAD) and comfort noise generation (CNG)
·Advanced adaptive jitter control and packet loss concealment
Calling Functions and Features
·Full duplex hands-free speakerphone
·Support Caller ID/name display or block
·Call waiting/Hold/Flash/Transfer/Forward
·3-way conference
·In-band and out-of-band DTMF
·Do-Not-Disturb, off-hook autodial, auto answer
·Voice mail with indicator
·Downloadable ring tones
Network Functions and Features
·PPPoE, STUN, TFTP, DNS, DHCP (both client and server), NTP
·Support for Layer 2 (802.1Q VLAN, 802.1p) and
·Layer 3 QoS (ToS, DiffServ, MPLS)
Maintenance and Management
·Remote device configuration via TFTP and HTTP server with encrypted configuration files
·Automated NAT traversal without manual manipulation of firewall/NAT
·Support firmware upgrade via TFTP or HTTP with encrypted configuration files.
