Voice Features                            Voice Codecs: G.711, G.723.1, G.726, G.729AB, G.722, VAD, CNG, AEC, PLC, AJB, AGC Telephony Features                            1 VoIP User Account Direct IP call without SIP proxy Call Hold Call Waiting Call Transfer Block Anonymous Calls Hotline Redial 2 Speed Dials Volume Control Call Mute Ringtone Selection (via web) Tone scheme Integrated Voice Response System Network FeaturesSIP v1(RFC2543), v2(RFC3261) NAT transverse: STUN mode IP Assignment: Static/DHCP/PPPoE In-Band DTMF, Out-of-Band DTMF (RFC2833) SIP Info Proxy mode and Peer-to-peer SIP link mode TFTP/DHCP/PPPoE client DNS client NAT/DHCP server  |              IP PBX System Integratio                            Music on Hold Intercom Group Paging Call Pickup Call Park Call Forward DND Distinctive Ringing Dial plan Dial now Voicemail Message Waiting Indication (MWI) Config, Upgrade and Usage                            Configuration: browser/phone /auto-provision/IVR Auto provision via TFTP/FTP/ HTTP/PnP Auto provision: firmware  configuration, ringtone etc. Security              QoS: IEEE 802.1p/q tagging  (VLAN), Layer 3ToS Digest authentication  using MD5/MD5-sess Secure configuration file via AES  encryption Admin/user configuration mode  |              Physical Features                            TI TITAN chipset 20 keys including 2 programmable keys 4 feature keys (Mute/Redial/ Transfer/Hold)                             1xLEDs for power and status indication               1xRJ45 10/100M Ethernet ports                             Phone label for speed dialing numbers                            Power adapter: AC 100~240V input and DC 5V/1.2A Output                             Power over Ethernet (IEEE 802.3af class 1) optional                             Operating humidity: 10~95% Storage temperature: up to 60 C Package features                             Qty/CTN: 5 PCS N.W/CTN: 7.87KG G.W/CTN: 9.00KG Measurement: 0.073CMB Carton Meas: 470x287x222MM  |              Additions Coming Soon                             DSCP/802.1pq HTTPS (Server/Client) SRTP (RFC3711) Transport Layer Security (TLS) Built-in web server (HTTPS  |