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3 SIP Accounts! Support PSTN! VPN(L2TP)

Software Overview
Network Protocol Tone
· Ring Tone
· Ring Back Tone
· Dial Tone
· Busy Tone
· User Programming Tone
· SIP v1 (RFC2543), v2(RFC3261)
· IP/TCP/UDP/RTP/RTCP
· IP/ICMP/ARP/RARP/SNTP
· TFTP Client/DHCP Client/ PPPoE Client
· Telnet/HTTP Server
· DNS Client

Phone Function

· Volume Adjustment
· Speed dial, Phone book
· Flash
· Speaker Phone

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

IP assignment
· Static IP
· DHCP
· PPPoE

Voice quality

· VAD: Voice activity detection
· CNG: Comfortable noise generator
· LEC: Line echo canceller
· Packet Loss Compensation
· Adaptive Jitter Buffer

Security
· HTTP 1.1 basic/digest authentication for Web setup
· MD5 for SIP authentication (RFC2069/ RFC 2617)

QoS

· ToS field

NAT Traversal
· STUN

Call function

· Call Hold
· Call Waiting
· Call Forward
· Caller ID
· 3-way conference Configuration

DTMF Function
· In-Band DTMF
· Out-of Band DTMF
· SIP Info

Configuration

· Web Browser
· Console/Telnet
· Keypad

SIP Server
· Registrar Server (three SIP account)
· Outbound Proxy

Firmware Upgrade
· TFTP
· Console
· HTTP
· FTP