Planet VIP-462DG 802.11g WiFi DECT/VoIP Router (SIP) - two voice channel

Built in NAT firewall, DoS (Denial of Service) protection QoS mechanism to ensure the voice quality SPI (Stateful Packet Inspection) firewall Policy-based LAN/WAN access control Remotes administrator authentication Scheduled access control   VoIP Features: SIP 2.0 (RFC3261) compliant SIP proxy calls Voice codec support: G.711, G.723.1A, G.729A Built in NAT firewall, DoS (Denial of Service) protection Voice processing: Voice Active Detection, DTMF detection/ generation, G.168 echo cancellation (16mSec.), comfort noise generation, call progress detection, gain control PSTN lifeline for emergency calls   DECT features: DECT & GAP Compatible Base can register up to 5 Handsets Intercom call during external call, call transfer between handsets, three-way telephone meeting CID 50 locations Redial memory: 3 locations , 20 digits Adjustable ringer volume & melody 100 hours standby time, 10 hours talk time Hands-Free, Mute function Call duration time meter Transmission distance: up to 50M indoor / up to 300M outdoor