Software Specifications

Standard
H.323 v2/v3/v4, SIP (RFC 3261) , SDP (RFC 2327), Symmetric RTP, STUN (RFC3489), ENUM (RFC 2916), RTP Payload for DTMF Digits (RFC2833), Outbound Proxy Support.
Voice codec
G.711 a-law/u-law PCM 64kbps, G. 723.1 (5.3/6.3 kbps), G.729a/b 8kbps,
Voice processing
VAD, CNG, EC, DTMF (in-band, out-of-band, SIP-info),  Packet Loss Compensation, Adaptive Jitter Buffer
Call features
Caller ID Delivery and Detection
Answer Supervision
Smart-QoS for voice traffic
Call Hunting
Speed dial
SIP STUN, outbound proxy for NAT transversal
FAX over IP
T.30 / T.38
Network features
Protocols
TCP/UDP/IP, IPV4, DNS, SDP, ARP, ICMP, DHCP Client, Static IP
Internet features
Virtual Server, Smart QoS, TOS (IP Precedence), native NAT router, bridge feature
Management
Interface
Web, console, telnet
Operation Environment
Temperature / Humidity
Operating: 0℃ ~ 40℃, storage:－10℃ ~ 50℃, 20~85% humidity
Input Voltage
12V DC
EMC/EMI
CE, FCC