D812 Desk phone

Basics

Product information
- IP desk phone D812
  |
  gunmetal black
  |
  PN 00004690
- Anti-bacterial housing
- Operating system: Linux
Placement
- Indoor
  ,
  desktop
  ,
  wall mounting¹

Dimensions (L × W × H, approx.)
- 210 mm × 243 mm × 45 mm
  
  without footstand
- 193 mm × 243 mm × 165 mm
  
  with footstand
Weight (approx.)
- 1.12 kg
  
  with footstand

Display
- TFT liquid crystal display (LCD):
  
  IPS panel
  ,
  true colour
  ,
  backlit
- Size (diagonal): 5.0″ (127 mm)
- Size (W × H): 110 mm × 62 mm
- Resolution: 480 × 272 pixel
13 LED indicators
- Call status indication:
  
  1 red LED
- Message waiting indication (MWI):
  
  1 red LED
- Function key status indication:
  
  8 multicolour LEDs
- Audio key status indication:
  
  3 LEDs (1 red / 2 green)

39 hard keys in total
- 12 keys (standard ITU telephone keypad)
- 5-way navigation key
- 4 context-sensitive function keys
- Programmable function keys:
  - 8 SmartLabel keys
    
    (with multicolour LED)
  - Key mapping of up to 32 functions (8 keys × 4 pages)
- 5 dedicated audio keys
  - Mute
    
    (with red LED)
  - Speakerphone
    
    (with green LED)
  - Headset
    
    (with green LED)
  - Volume + / -
    
    (rocker)
- 5 dedicated function keys
  - Cancel
  - Message(with red LED)
  - Transfer
  - Hold
  - Redial
  - Keyboard lock
    Expansion module connection via USB port for up to 3 × D8C¹

Casing microphone
|
Casing speaker
- Frequency range:
  
  100 Hz - 8.0 kHz
- Speakerphone mode:
  
  Full duplex
  ,
  HD audio
  ,
  Acoustic Echo Cancellation (AEC)
Corded handset:
Microphone
|
Handset earpiece
Frequency range:

150 Hz - 8.0 kHz
Noise cancellation
,
HD audio
,
Hearing aid compatible (HAC)
Audio codecs
- G.711 (A-law, μ-law), G.722, G.723.1, G.726, G.729AB, GSM6.10(FR), Opus
Dual-tone multi-frequency signalling (DTMF / RFC2833):
- SIP-INFO
  ,
  in-band
  ,
  out-of-band
Related features
- Comfort Noise Generator (CNG)
- Voice Activity Detection (VAD)
- Audio response time
- Adaptive jitter buffer
- Packet loss concealment (PLC)

Power options
- Power over Ethernet (PoE)
  - IEEE 802.3af
    ,
    class 3
    |
    IEEE 802.3az³
- Power adapter¹
  - 100 - 240 V AC, 50 - 60 Hz | 5 V DC (SELV), 2 A, 10 W¹
Wired interfaces
- Power adapter:
  
  coaxial power connector (socket)
- Network connectivity:
  
  2 × RJ45-8P8C sockets
  
  (NET, PC) →
  
  Gigabit Ethernet (GbE)
- USB connectivity:
  
  USB 2.0 type A port
- Corded handset:
  
  RJ9-4P4C socket
- Headset:
  
  RJ9-4P4C socket
- EHS adapter:¹
  RJ12-6P6C socket
Wireless interfaces
- Third party headset support
  - DECT: optional via A230¹
- Network connectivity:
  
  WLAN optional via A210¹
Sensors
- Hook switch sensor

Configuration and setup via menu-driven web user interface (WUI)
- Password-protected login
- Secure web server/client (HTTPS)
- Configuration and setup via menu-driven phone user interface (PUI)
Automatic configuration via provisioning
- Loading of settings and firmware via HTTP, HTTPS, TFTP
- Supported DHCP provisioning options 43 / 60 / 66 / 67
- Secure Redirection And Provisioning Service (SRAPS) support
- Remote management via TR-069 / TR-069 Annex G (TR-111) / TR-369
- Plug & Play (PnP) support
Localization
- Languages
- Time zone
  ,
  dial tone
Diagnostic
- SIP / PCAP trace
- Syslog
Related features
- Dual firmware partition

Network technologies
- OpenVPN
  , VLAN (IEEE 802.1q)
VoIP related protocols and techniques
- SIP, SDP, RTP,
  RTCP
  ,
  RTCP-XR
  ,
  SIP REFER method (RFC 3515)
  ,
  rport (RFC 3581)
  ,
  ENUM
  ,
  ICE
  , STUN
Secure VoIP protocols
- SIPS (SIP over TLS)
  , SRTP,
  SRTCP
Network protocols
- IPv4 / IPv6 (dual stack)
  , DHCP,
  NTP
  , LDAP, LLDP-MED,
  HTTP
  ,
  TFTP
  ,
  L2TP
Secure network protocols
- TLS V1.2
  HTTPS
  ,
  IEEE 802.1X (EAPoL)
Remote management protocols
- TR-069
  ,
  TR-069 Annex G (formerly TR-111)
  ,
  TR-369 (USP)

12 SIP identities / accounts
- Up to 12 simultaneous calls
Directory support
- LDAP (server-based directory)
- Local directory with up to 2,000 entries
Outgoing call features
- Speed dialling via function keys
- Speed dialling
- URL dialling
- Local dial plan
- Redial (via dialled calls list)
- Automatic redial on busy
- Caller identification (CLIP)
- Calling Line Identification Restriction (CLIR)
- Call completion (busy/unreachable)²
- Intercom
- Multicast paging
Incoming call features
- Call waiting/swapping
- Auto answer
- Call barring / blocking:
  
  deny list
  ,
  anonymous calls
  ,
  Do Not Disturb (DND) mode
- Call diversion
- Call deflection
Connected call features
- Mute microphone
- Hold
- Music on hold²
- Blind call transfer
- Attended call transfer
- 2+1 (4+1) local conferencing³
- Call park / unpark²
- Client Matter Code (CMC)²
Related features
- Call history lists of missed, received, dialed, rejected, and deflected calls
- Extension monitoring (Busy lamp field), call pickup²

Hardware
- IP desk phone D812
- Corded handset
- Footstand
- Ethernet cable:
  
  1.5 m
Documentation
- Quick Installation Guide
- GNU General Public License

PoE injector
- A5E (PN 00004079)
Power adapter
- Snom 10W PSU (PN 00004570)
Wall mount kit
- D8xx WM (PN 00004544)
Corded wideband handset
- D8xx WB handset (PN 00004561)
USB dongle
- Wireless LAN:
  A210 (PN 00004384)
- DECT:
  A230 (PN 00004386)
EHS adapter
- EHS Advanced 2.0 (PN 00002362)
Wireless conference speakerphone (USB)
- C300 (PN 00004584)
DECT headset via RJ9+EHS / USB
- A170C (PN 00004733)
Wired headset via RJ9
- Binaural:
  A310D (PN 00004626)
- Monaural:
  
  A100M (PN 00004341), A310M (PN 00004624)
Wired headset via USB
- Binaural:
  A330D (PN 00004598)
- Monaural:
  A330M (PN 00004597)
BT headset via Bluetooth dongle
- A350M (PN 00004658)
Expansion module
- D8C (PN 00004562)