VoIP Gateway

1) Supported H323, SIP protocol 
2) DHCP support for LAN or cable modem 
3) PPPoE support for ADSL or cable modem 
4) Set phone by HTTP web browser 
5) Upgrade by TFTP HTTP 
6) Support major G.7XX 
7) Dynamic voice jitter buffer CNG (comfort noise generation) 
8) G.165 compliant 16ms echo cancellation 
9) Tone generation and Local DTMF re-generation according with ITU-T 
10) E.164 dial plan and customized dial rules 
11) Support IPSEC and VLAN 
12) SNMP V1/V2 
13) T30/T38