The price is as low as 82.99USD per unit.

CP0020 is a DECT cordless IP phone that creates value for residential, traveler and business users. With DECT Cordless, PSTN and VoIP ability, users can not only make normal PSTN calls, but also take advantage of the features VoIP provides using SIP and H.323 protocol. Also noted is the ease of use with which the CP0020 operates, and the lightweight which allows for easy mobility.

Voice Features:
Support SIP 2.0, H.323, Lifeline
Codec: G.711A/u, G.7231 high/low, G.729
Echo cancellation: Support G.168
Support Voice Gain Setting, Jitter Buffer,VAD,CNG, and Peer to Peer
NAT transverse: support STUN client
Support SIP domain, SIP authentication, DNS name of server
Support two sip server at the same time
DTMF: Support SIP info, DTMF Relay,RFC2833
SIP application: support Call forward
Call control features: Flexible dial map, Reject service, Black list, out-limit, No disturb


Network Features
WAN/LAN: Support Bridge and Router model
Support basic NAT and NAPT
Support PPPoE for xDSL
Support DHCP Client on WAN
Support DHCP Server on LAN
Support DNS Relay, SNTP Client, Firewall, route, telnet client