AT320E series IP phone is an internet based voice network phone terminal. AT320E series IP phone adopts multiple voice control protocols and voice compression coding methods to directly convert analog voice into IP packet for internet transport, thus effectively using the existing bandwidth to provide PSTN quality voice service.
AT320ED IP phone supports H323, SIP, MGCP, IAX2 and other protocols, offers one Ethernet interface and is compatible with various softswitch systems and VoIP voice gateways to provide broadband IP voice service.
Enterprise, small office and residential applications
Key features:
voice Features
call hold;
Unattended/ attended call transfer
call waiting and per call-waiting blocking
call forward (Always, busy, no answer, power off)
voip speed dial
VoIP digital map
user define ring tone
E.164 dial plan and customize dial rules
caller number/name display
MWI(Message wait Indication)
voice promote
configurable jitter buffer size
configurable audio frame
data features
Static/Dynamic WAN-IP-Addressing
PPPoE
modem dial up (AT-320M only)
management and provisioning
http, telnet, keypad and dedicate manage tool
adjustable user password and super password
URL based FTP,HTTP and TFTP auto provision
Configure file download and upload by palmtool
support four settings storage, switch by keypad
safe mode provide reliability
four servers store and load by keypad
80 entries each for missed calls, answered calls and dialed calls
100 entries for speed dial number
Multiply Language support
open source, user individuation firmware
Interfaces
2 X RJ45 connector

Supported specification and applications
data networking
MAC Address
TCP:Transmission Control Protocol
DHCP:Dynamic Host Configuration Protocol
PPPoE：PPP Protocol over Ethernet
SNTP, Simple Network Time Protocol
STUN - Simple Traversal of User Datagram ...
MD5 Message-Digest Algorithm
TOS:Type of service
DNS：Domain 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
MGCP RFC2705
H323 V4
IAX2 (Inter-Asterisk-eXchange V2)
Tone generation and Local DTMF re-generation according with ITU-T
voice algorithms
G.711(A-law or u-law)
G.723.1(6.3kbps,5.3 kbps)
G729/GSM/iLBC
AGC(Auto Gain Control)
G.168/165 compliant 16ms echo cancellation
AEC(Auto Echo Cancellation)
VAD (Voice Activity Detection)
CNG(Comfort Noise Generation)

Enviromental
Electric requirements
Voltage: 9V ~ 24V
Power adapter: output DC 12V/450 mA
Operating requirement
Operation temperature: 0 to 40? C ( 32? to 104?F)
Storage temperature: -30? to 65? C (-22? to 149?F)
Humidity: 10 to 90% no dew

Regulatory compliance
CE,FCC part 15