SP510 IP phone supports SIP and IAX2 protocol, offering two 10/100Mbps Ethernet interface with built in router. SP-510 can accommodate both internet access and telephone connection on a single line, thus effectively using the existing broadband resources. It is compatible with various soft switch systems and VoIP voice gateways to provide broadband IP voice service.

Key features:

SIP and IAX2 protocol
STUN
Jitter Buffer(200ms),VAD,CNG
G.711 a/u and G.729 codec
G.167 16ms Acoustic Echo Canceller echo cancellation, 64ms in handsfree mode
Inband audio，RFC2833 and SIP info DTMF transmission method
SIP Call Forward、Call transfer、Call hold、Call waiting, 3-way Talking、Pickup、Join call、Redial、Unredial、Call Park
Hotline , DND (Do Not Disturb) , black list , call limitation , caller ID
Dial-peer calling rules and point to point call by IP address
SIP server conference
AES 64bit SIP signal encryption
Auto answer

Data Features:

Static/Dynamic Wan-IP-Address
PPPoE

Management：

Config with Web , keypad and Telnet
Update firmware and configuration via HTTP , FTP and TFTP
Support auto provision
Support syslog
Support config server management
Guest and admin password changeable
Phonebook support 500 records , and 100 missed calls and call history

Interface：

Two RJ45 ports, one for WAN, one LAN.
Power port