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VoIP subscriber gateways  9 
The device supports the next functions: 
  Network functions: 
–  PPPoE support (PAP, CHAP, MSCHAP authorization, PPPoE compression
1
); 
–  PPTP/L2TP support; 
–  Static address support and DHCP (DHCP-client on WAN); 
–  DNS support; 
–  NAT support; 
–  NTP support; 
–  SNMP support; 
–  QoS support; 
  IP-telephony protocol: SIP; 
  ToS for RTP, SIP packets; 
  Echo cancellation (G.164, G.165 guidelines); 
  Silence detector (VAD); 
  Comfortable noise generator; 
  DTMF signals detection and generation; 
  DTMF transmission (INBAND, rfc2833, SIP INFO); 
  Fax transmission: 
–  G.711a, G.711u; 
–  upspeed/pass-through; 
–  T.38; 
  Operation with several SIP servers; 
  Value added service: 
–  Call Hold; 
–  Call Transfer; 
–  Call Waiting; 
–  Call FWD Busy; 
–  Call FWD No answer; 
–  Call FWD Unconditional; 
–  DND (Do not disturb); 
–  Call Pickup; 
–  Caller ID: V.23, Bell202, DTMF; 
–  Hotline; 
–  CLIR – caller identity restriction; 
–  Value added service control via phone; 
–  Conference call; 
  Firmware update via web-interface; 
  Remote monitoring, configuring and settings: Web-interface, Telnet, FTP, SSH, SNMP, TR-069; 
  Express setting menu; 
  Voice menu support; 
  Supporting MAC address filtration; 
  Supporting automatic gain control on analogue lines; 
  Loading user pitches for analogue lines. 
 
 
1
It is not available in the current version