ELTEX TAU-4.IP - Page 10

10 VoIP Subscriber Gateways
 USB2.0 port to connect storage devices, USB-modem or printer.
The gateway is powered via an external 12V DC adapter at 220V.
The device supports the following functions:
- Network functions:
 PPPoE support (PAP, CHAP, MSCHAP authorization, PPPoE compression
2
);
 PPTP/L2TP support;
 Static address support and DHCP (DHCP-client on WAN);
 DNS support;
 NAT support;
 NTP support;
 SNMP support;
 QoS mechanisms support;
- VoIP protocols: SIP
- ToS for RTP packets, SIP;
- echo cancellation (G.164 and G.165 guidelines);
- silence detector (VAD);
- Comfort noise generation;
- 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 (VAS):
2
Not available in the current version