The VoIP adapter has a compact and ultra-lightweight design for traveling. It supports SIP 2.0 (RFC 3261), TCP/UDP/IP, RTP/RTCP, ICMP, ARP/RARP, DNS, DHCP, NTP, PPPoE, STUN and TFTP. It also features password enabled VoIP-to-PSTN and PSTN-to-VoIP call routing.

GATE 104 also supports remote device configuration via TFTP server with encrypted configuration files, caller ID display, 3-way conference calling, call blocking, call hold, call waiting/flash, call transfer, call forward, DTMF and dial plans.

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