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10/100Base-T or WiFi
H.323, MGCP, H.248, TCP/ IP, UDP, RTP/ RTCP, HTTP, ICMP, ARP, DNS, PPPoE, DHCP, TFTP/ FTP, Telnet, SNMP etc;
Advanced digital signal processing( DSP) hardware to insure high and clear voice quality, support the Voice Activity Detection (VAD) technology, Comforting Noise Generation( CNG) technology, silence compression, echo eliminator( G.168) , can change compression arithmetic dynamically when network blocked.
Communicate mutually with other center equipments, gateways and terminals as well;
ITU- T G.711( A- law/ m- law) , G.723.1, G.729 compression coding etc;
Standard services such as CLI, caller ID detection and generation etc;
Value-added services and applications such as call transfer, call wait, call hold etc;
Hand-free, redial, telephone record, volume adjustment;
Pass though NAT, realize mutual communication in NAT or between in and out of NAT(telephone, IAD, TMG) ;
ToS function, guarantee voice quality;
Add, intercept, modify prefix of phone number, abbreviation dial;
Reset system configuration through keyboard, SNMP agent, Web or Telnet, support remote software upgrade.