1.支持： SIP2.0 ， TCP/UDP/IP, RTP/RTCP ， HTTP ， ICMP ，
ARP/RARP, DNS，DHCP (both client and server), NTP，PPPoE，TFTP, etc.
2.内置 router, NAT and Gateway
3. Powerful digital signal processing (DSP) to ensure superb audio
quality; advanced adaptive jitter control and packet loss concealment
technology
4.Ultra compact (wallet size) and lightweight design, great companion
for travelers
5•; 支持 various voice codes including G.711 A-/U-law ， G.723.1,
G.729A/B, , G.726,
6•; 支持 Caller ID/Name display or block, Hold, Call Waiting, Call
Transfer, Call Forward, Flash, Three-Way Conferencing
7•; 支持 customizable ring tone
8•; Fax pass through and T.38
9•; 支持 silence suppression and VAD ， AGC ， and echo cancellation (G.168)
10•; 支持 standard encryption and authentication (DIGEST using MD5 and MD5-sess)
11•; 支持 layer-2 (802.1Q VLAN, 802.1p) and layer-3 (DiffServ, ToS) QoS
12•;支持 automated NAT traversal without manual manipulation of firewall/NAT
13•; 支持 remote automated provisioning and software upgrade even through firewall/NAT to
enable “zero configuration” and “plug-and-dial” for end users
14•;支持 device configuration via built-in IVR, Web browser or central configuration file
15•;支持 DNS SRV Look Up
Port:
2s
Wan
Lan
Power
Key:
Reset