... )Hands-freeMuteHeadsetMessageMenuHoldRedialConferenceTransferVoIP ProtocolSIP 2.0Network ProtocolHTTP,BOOTP,FTP,TFTP,IEEE 802.1Q,*IEEE 802.1XCodec G.723.1,G.729 A/B ... provisionDebug:Telnet/Phone/WebPower SupplyPower adapter:AC100~240V input an DC 5V/1A outputPoE(IEEE 802.af)SpecificationStorage Temperature: 0°C ~ 60 ...