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Physical Feature
- 3.5”TFT-LCD, 480 x 320 pixel, 262K colors
- Ethernet: Dual-port Gigabit Ethernet ports
- Keys: 47 keys including 14 programmable keys
- Handset: 1 RJ9(4P4C)
- Headset: 1 RJ9(4P4C)
- Power adapter: 5V/1.2A
- Power over Ethernet(PoE): IEEE 802.3af
VoIP Protocol
- SIPv2, SDP(RFC 2327), RTP(RFC 1889,1890), RTCP
- RFC 2833 X-NSE Tone Events for SIP/RTP, AVT Tone
- Events for SIP/RTP
Voice Codecs
- HD wideband codec:
- G.722. HD Codec, HD speaker, HD handset
- Full-duplex speakerphone with AEC
- G.711u/a-law, G.723.1, G.726, G.729A/B.
- DTMF(In-Band, RFC2833, SIP Info)
- Acoustic Echo Cancelation(AEC),
- Acoustic Gain Control(AGC)
- Voice Activity Detection(VAD), Comfort Noise insertion
Security
- HTTPS Server/Client
- Transport Layer Security (TLS)
- SRTP (RFC3711), SIPS
- VLAN QoS (802.1pq)
Telephone Interfaces
- 4 VoIP Accounts
- Menu-driven user interface, XML Idle Screen, Theme,
- Screen Sleep
- Call hold, Call waiting, Call forward, Call return,
- Redial,Call transfer
- Caller ID display, DND, Auto-answer, 5-Way Conference
- Mute, Speed dial, SMS, Voicemail, Message Waiting
- Indication (MWI) LED, Call history
- BLF/BLA
- Tone scheme, Volume control
- Ring tone selection/Import/Delete
- Broad and Deep Interoperability
- Soft keys programmable
- Phonebook, Black list XML/LDAP phonebook
Network Protocol
- TCP, UDP, ICMP, RARP, ARP, DNS, NTP,SNTP, STUN, UPnP,SNMP
- Static/DHCP/PPPoE
- TFTP/DHCP/PPPoE client
- Telnet/HTTP/HTTPS server
QoS
- Layer 2(802.1Q, 802. ...