Phone Interface

DTMF QoS

1 FXS (RJ-11) port In-band DTMF (G.711) ToS field

Out-of-band

DTMF (RFC 2833)

WAN Interface Tone

10/100BASE-TX (RJ-45) Ethernet port SIP Server Support DTMF

Registrar server

Ring back tone

Protocol Outbound

proxy Dial tone

IETF SIP

(RFC3261) Redundant proxy server Busy tone

Call Features

• Security IP Assignment

Call transfer

• HTTP 1.1 basic/digest authentication for web setup Static IP

Call waiting

• MD5 for SIP authentication DHCP

Call hold

• Supports configuration download using HTTPS or PPPoE

Caller ID

• display SSL/TLS client certificate encryption and authentication

• 3-way conference (dialing via SIP server) NAT Traversal

Dial Methods STUN

• Codec Direct IP call without SIP proxy
• G.711U-law Dial number via SIP server
• G.711A-law
• G.729A Voice Quality

VAD

• (Voice Activity Detection)

Fax Support

CNG

• (Comfort Noise Generation)

G.711 AEC

• (Acoustic Echo Cancellation) G.168
• Jitter buffer