One VoIP account

Call hold, mute, DND

One-touch speed dial, hotline

Call forward, call waiting, call transfer

Group listening, SMS, emergency call

Redial, call return, auto answer

Local 5-way conferencing

Direct IP call without SIP proxy

3” 132×64-pixel graphical LCD

LED for call and message waiting indication

Intuitive user interface with icons and soft keys

Multilingual user interface

6 features keys: transfer, message, headset, redial, mute, hands-free speakerphone

5 navigation keys

Volume control keys

Anonymous call, anonymous call rejection

Hot-desking, voice mail

Flexible seating

Call park, call pickup

Executive and Assistant

Centralized call recording

Visual voice mail

Call recording

SIP v1 (RFC2543), v2 (RFC3261)

Call server redundancy supported

NAT traversal: STUN mode

Proxy mode and peer-to-peer SIP link mode

IP assignment: static/DHCP

HTTP/HTTPS web server

Time and date synchronization using SNTP

UDP/TCP/DNS-SRV (RFC 3263)

QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP

Configuration: browser/phone/auto-provision

Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy

Auto-provision with PnP

Zero-sp-touch, TR-069

Phone lock for personal privacy protection

Reset to factory, reboot

Package tracing export, system log