D815 Desk Telephone Quick summary 5' (480x272) color LCD 10 (36) configurable self-labeling multicolor LED keys 2 USB ports Elegant design WLAN Electronic Hook Switch (EHS) support for wireless headsets D8C Expansion Module ready 2-port Gigabit Ethernet switch (RJ45) 3-year standard warranty Phone Features 12 SIP identities / accounts XML browser Call lists for dialed, received, missed calls Local directory with 1000 entries Multiple language support DTMF in-band / out-of-band / SIP-INFO Interoperable with all major IP PBX platforms Speed dialing URL dialing Local dial plan Automatic redial on busy Call completion (busy / unreachable)2 Caller identification Call waiting Call blocking (deny list) Auto answer Hold Music on hold2 Blind and attended transfer Call forwarding 3-way conferencing on the phone Extension monitoring, call pickup2 Call park, call unpark2 Multicast paging DND mode (do not disturb) Keyboard lock Client matter code (CMC)2 Audio/Codecs G.711 A-law, u-law G.722 (wideband) G.726, G.729ab, GSM 6.10 (FR) Built-in assignable ringtones Comfort noise generator (CNG) Voice activity detection (VAD) Setup Configurable through web interface Provisioning Automatic loading of settings via HTTP / HTTPS / TFTP DHCP Options 66/67 Secure Redirection and Provisioning Service (SRAPS) support Remote management via TR-069 / TR-111 Protocols SIP (RFC3261) DHCP, NTP HTTP / HTTPS / TFTP LDAP (Directory) Dual Stack IPv4 / IPv6 User Interface Localization (language, time, dial tone) Red LED for call indication / message waiting 4 context sensitive keys 10 programmable line / function keys with multicolor LEDs Dedicated keys for: Message, call history, transfer, hold, conference Audio keys with LED indication: Mute, speakerphone, headset Volume key 5-way navigation key Cancel key Menu-driven user interface