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