IP Phones

• Basic Functions

4 SIP lines, HD voice, POE power supply, 2.4-inch color display, handset/hands-free/headset mode, desktop/wall-mounted (wall-mounted accessory to be purchased separately), power adapter (to be purchased separately)

• Phone Functions

Local Phonebook (1000 entries), Internet Phonebook (XML/LDAP support, 1000 entries), Call History (Missed Calls/Incoming/Canceled Calls, 600 entries), Blocked Calls List/Allowed Calls List, Screensaver Standby, Voice Message Waiting Indication ( VMWI), User-definable DSS Keys/Softbuttons, Network Time Synchronization, Support for Colorado Wireless Headset (via Colorado APD-80 EHS cable), Support for Jabra Wireless Headset (via EHS20 cable), Support for Recording (Server Recording) ACTION URL /ACTIVE URI, Support for Recording (Server Recording) ACTION URL/ACTIVE URI, Support for Recording (EHS20 cable). APD-80 EHS cable), Jabra wireless headset support (via EHS20 cable), recording support (server recording) ACTION URL /ACTIVE URI, UACSTA

• Call Function

Outgoing/Answer/Reject, Mute/Unmute (Microphone), Call Hold/Resume, Call Waiting, Intercom Feature, Caller ID, Speed ​​​​Dialing, Anonymous Calling, Call Forwarding (Unconditional/Busy Line/No Answer), Call Forwarding ( Attendance/ Non-Attendance), Call Parking/Snap (Requires Server), Redialing, Do-Not-Disturb, Auto-Answer, Voicemail (Requires Server), 6-Party Conferencing, Hotline, Shared Phones (HOT DESKING)

• Audio

Wideband ADC/DAC 16KHZ sampling, Narrowband coding: G.711A/U, G.723.1, G.726, G729A/B, ILBC, Wideband coding: G.7220PUS, Full-duplex hands-free calling, support for Acoustic Echo Cancellation (AEC), Voice Activity Detection (VAD)), Comfortable Background Noise Generation (CNG), Background Noise Detection (BNE)/Noise Reduction (NR)/Automatic Gain Control (AGC), Packet Loss Compensation (PACKET LOSSCONCEALMENT), Dynamic Automatic Gain Control (PACKET LOSS). BNE)/Noise Reduction (NR)/Automatic Gain Control (AGC), Packet Loss Compensation (PACKET LOSSCONCEALMENT), Dynamic Adaptive Jitter Buffer, DTMF: In-Band (IN-BAND) Out-of- Band (FC2833/SIPINFO), VQM Voice Quality Monitoring

• Configuration & Management

AUTO-PROVISIONING via FTP/TFTP/HTTP/HTTPS/DHCP OPT66/SIPPNP/TR-069 Web management interface, WEB-BASED PACKET-DUMP Configuration Export/Import, Phonebook Import/Export Software upgrades, SYSLOG.

• Network

10/100MBPS Ethernet, IP Mode: IPV4/IPV6, IP Acquisition Method: Static IP Setup/DHCP/PPPOE Support 8021X network access rights authentication, Virtual Private Network (VPN): L2TP/OPENVPN Virtual Local Area Network (VLAN) Link Layer Discovery Protocol (LLDP) Quality of Service Assurance (QOS), RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)

• Protocol

SIP2.0 OVER UDP/TCP/TLSRTP/RTCP/SRTP、STUN、DHCP、IPV6、LLDP、PPPOE802.1XL2TPOPENVPN、SNTP、FTP/TFTP、HTTP/HTTPS、TR-069、AES128 & AES256