Cheap VoIP Phone

Main Features
Support 4 SIP accounts at the same time.
Support multi-line.
Support Static, DHCP and PPPoE mode.
DHCP server and address pool.
Support Bridge or NAT.
Support QoS, ToS.
Support SNTP.
Support major G7. Xxx CODEC.
VAD, CNG, AEC, Jitter buffer.
Support Local Dial Plan.
Support Info, Inband and RFC2833 DTMF.
Ring tones and tone set.
Speed Dial, Phone Book, Call Log.
Call Forward,
Call Transfer.
Three-Way and Conference.
MWI.
Caller ID displays.

DND
Mute
Hold
Provision function
Web UI management
Adjustable user password and super password
Adjustable volume of hands free and handset
Display logo
Support Codec
G. 711A
G. 711u
G. 723.1 5.3/6.3
G. 729AB.
Networking Protocol
SIP or IAX protocol
DTMF: Inband, RFC2833, SIP Info
RTP: RFC1889
RTCP: RFC3605, RFC3611
DNS: RFC1035
FTP: RFC9590
TFTP: RFC1350
HTTP: RFC1945, RFC2616
SNTP: RFC1361, RFC2030
SNMP: RFC1157
STUN: RFC3489
DHCP: RFC2131, RFC2132
PPPoE: RFC2516
NAT: RFC1631, RFC2663
Hardware Parameters
Standard
CPU: Infineon PSB21553
Data Memory: 8MB SDRAM
Software Memory: 2MB Flash memory
Ethernet Port: 2 RJ-45
Power Adaptor: Input 110-250V, Output 5V DC, 1A
Keypad: 36keys
LCD: 5x20 char-based, white backlight
LED: 2 LEDs
Optional
Data Memory: 16MB/32MB SDRAM
Software Memory: 4MB/8MB Flash memory
PoE: 802.3af
LCD: 128x64 Pixel-base with blue/white backlight
Headset Port: 2.5mm plug set