Key Features
- SIP 2.0 (RFC3261) compliant
- G.711, G.723.1 and G.729 voice codec
- Support STUN, Outbound Proxy
- Up to 3 Proxy server registrations
- 3-way conference, Caller ID support
- Built-in phone book / Speed dial
- Call Hold / Forward / Transfer / Waiting
- VAD / CNG / Echo Cancellation / DTMF detection
- Incoming / Outgoing / Miss Call record
- QoS / NAT / DHCP Server
- Web / Keypad management

Specification
HARDWARE
- LAN: 1× 10/100Mbps RJ-45 port
- PC: 1× 10/100Mbps RJ-45 port
- LCD display: 2× 16 characters
- Speaker: Full duplex hands free speaker phone

PROTOCOLS AND STANDARD
- Standard: SIP 2.0 (RFC3261), MD5 for SIP authentication (RFC2069 / RFC 2617), SIP outbound proxy, SIP NAT Traversal Support STUN (RFC3489)
- Voice codec:
* G.711: 64k bit/s (PCM)
* G.723.1: 6.3k / 5.3k bit/s
* G.726: 16k / 24k / 32k / 40k bit/s (ADPCM)
* G.729A: 8k bit/s (CS-ACELP)
* G.729B: adds VAD & CNG to G.729
- Voice Standard:
* Voice activity detection (VAD)
* Comfort noise generation (CNG)
* Acoustic echo canceller (AEC)
* G.165: Line echo canceller (LEC)
* Jitter Buffer
- Supplementary services:
* Caller ID
* 3-way conference
* Immediate (unconditional) call forwarding
* Busy call forwarding
* No answer calls forwarding
* Call Hold / Waiting / Transferring
- Call history:
* Record incoming call
* Outgoing call
* Missed (not accepted) call history
- Protocols: SIP v1 (RFC2543), v2(RFC3261), TCP / IP, UDP / RTP / RTCP, HTTP, ICMP, ARP, RARP, DNS, DHCP, SNTP, PPPoE

NETWORK AND CONFIGURATION
- Access Mode: Static IP, PPPoE, DHCP
- Management: Web, LCD menu keypad, Telnet, auto-provision by TFTP / FTP / HTTP
- Dimension (W×D×H): 184×200×48 mm
- Operating Environment: 0-45 Degree C, 0-95% humidity
- Power Requirement: 5V, 1A DC
- EMC / EMI: FCC, CE Class B

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