Telephony Features

● One voice line
● Music on hold*
● Call waiting
● Outbound caller ID blocking**
● Call transfer: attended and blind** ( SIP Only )
● Three-way call conferencing with local mixing
● Multiparty conferencing via external conference bridge
● Automatic redial of last calling and last called numbers
● Call pickup: selective and group*
● Call swap
● Call back on busy**
● Call blocking: anonymous and selective**
● Call forwarding: unconditional, no answer, and on busy**
● Hot line and warm line automatic calling
● Digits dialed with number auto-completion
● Anonymous caller blocking**
● Support for Uniform Resource Identifier (URI) (IP) dialing (vanity numbers)
● Multiple ring tones with selectable ring tone per line
● Call duration and start time stored in call logs in web GUI
● Distinctive ringing based on calling and called number
● 10 user-downloadable ring tones
● Speed dialing, eight entries
● Configurable dial/numbering plan support
● Intercom*
● Group paging
● Network Address Translation (NAT) Traversal, including Serial Tunnel (STUN) support
● DNS SRV and multiple A records for proxy lookup and proxy redundancy
● Syslog, debug, report generation, and event logging
● Support for highly secure encrypted voice communications
● Built-in web server for administration and configuration, with multiple security levels
● Automated remote provisioning, multiple methods; up to 256 bit encryption (HTTP, HTTPS, Trivial File Transfer Protocol [TFTP])
● Option to require administrator password to reset unit to factory defaults

Hardware Features

● Voicemail message waiting indicator light
● Voicemail message retrieval button
● Volume control
● Redial Button
● Flash Button
● Standard 12-button dialing pad
● High-quality handset
● One Ethernet WAN port 10/100BASE-T RJ-45
● 5 VDC universal (100–240V) switching power adaptor included

Regulatory Compliance

● FCC (Part 15, Class B) ,UL, CE Mark, A-Tick

Security Features

● Password-protected system, preset to factory defaults
● Password-protected access to administrator and user-level features
● HTTPS with factory-installed client certificate
● HTTP digest: encrypted authentication via MD5 (RFC 1321)
● Up to 256-bit Advanced Encryption Standard (AES) encryptio