Data networking:
MAC Address
TCP:Transmission Control Protocol
DHCP:Dynamic Host Configuration Protocol
PPPoE£ºPPP Protocol over Ethernet
SNTP, Simple Network Time Protocol
STUN - Simple Traversal of User Datagram ...
MD5 Message-Digest Algorithm
DNS£ºDomain Name Server
RTP: Real-time Transport Protocol
RTCP:Real-time Control Protocol
Telnet:Internet's remote login protocol
HTTP:Hyper Text Transfer protocol
FTP:File Transfer protocol
TFTP:Trivial File Transfer Protocol

Call control /voip Features
SIP RFC3261,RFC 2543
Tone generation and Local DTMF re-generation according with ITU-T
G.711(A-law or u-law)
G729
AGC(Auto Gain Control)
G.168/165 compliant 16ms echo cancellation
AEC(Auto Echo Cancellation)
VAD (Voice Activity Detection)
CNG(Comfort Noise Generation

Electric requirements
Voltage: 9V ~ 24V
Power adapter: output DC 12V/450 mA

Operating requirement
Operation temperature: 0 to 40¡ã C ( 32¡ã to 104¡ãF)
Storage temperature: -30¡ã to 65¡ã C (-22¡ã to 149¡ãF)
Humidity: 10 to 90% no dew

Regulatory compliance
CE,FCC part 15