Telephone Interfaces: 2 VoIP Accounts Menu-driven user interface, XML Idle Screen, Theme, Screen Sleep Call hold, Call waiting, Call forward, Call return, Redial, Call transfer Caller ID display, DND, Auto-answer, 5-Way Conference Mute, Speed dial, SMS, Voicemail, Message Waiting Indication (MWI) LED, Call history BLF/BLA Hot-desking, Tone scheme, Volume control Ring tone selection/Import/Delete Broad and Deep Interoperability Soft keys programmable Phonebook, Black list XML/LDAP phonebook
VoIP Protocol: SIPv2, SDP (RFC 2327), RTP (RFC 1889,1890), RTCP RFC 2833 X-NSE Tone Events for SIP/RTP, AVT Tone Events for SIP/RTP