VoIP
SIP (SIP RFC3261,RFC 2543)/IAX2 support.
2 SIP lines + 1 IAX2 line
Redundancy sip server capable.
Hotline.
Call Forward、Call transfer、Call hold、Call waiting,
3-way Talking、Pickup、Join call、Redial、Unredial、
Call Park、vport、click to dial
DND(Do Not Disturb),
Black List,Limit List
E.164 dial plan and customized dial rules
Voice
Tone generation and Local DTMF re-generation according with ITU-T
G.711(A-law or u-law) , G722 , G723 G729
AGC(Auto Gain Control)
AEC(Auto Echo Cancellation)
VAD (Voice Activity Detection)
CNG(Comfort Noise Generation
G.165 compliant 96 ms echo cancellation
Networking
Static/Dynamic WAN-IP-Addressing
NAT, Firewall.
Support VPN (L2TP) Open VPN
Support DMZ
PoE ( Power over Ethernet)
WAN support Primary and Alter function
Qos support Diffserv
Support VLAN
DHCP client and server.
Support PPPoE, (used for ADSL, cable modem connecting).
Protocols
MAC Address
TCP:Transmission Control Protocol
DHCP:Dynamic Host Configuration Protocol
PPPoE:PPP Protocol over Ethernet
PoE(option)
SNTP, Simple Network Time Protocol
STUN - Simple Traversal of User Datagram ...
MD5 Message-Digest Algorithm
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
Management
Web, telnet and keypad management.
Adjustable user password and super password
Upgrade firmware through HTTP, FTP or TFTP.
Telnet remote management.
Upload/download configration file
Auto-provisioning ( firmware and configuration)
Safe mode provide reliability
Phone book, maximum 500 entries.
