Snom 821 SNOM_2346 전단

Version 2.3.0 / en / January 2013

Copyright © 2013 snom technology AG. All rights reserved.

snom

®

 is a registered trademark of snom technology AG and its affiliates in the European Union, USA, Japan, China and certain other countries and regions. Unless specified otherwise, all trademarks, in particular product names, are legally 

protected trademarks of snom technology AG. Other mentioned trademarks or registered trademarks are the property of their respective manufacturers or owners. Product specifications are subject to change without notice. snom.com 

Wittestr. 30 G

13509 Berlin, Germany

tel: 

+49 30 39833-0

fax: 

+49 30 39833-111

sip:  

info@snom.com

mail:  

info@snom.com

Amethyst House, Meadowcroft Way,  

Leigh Business Park

Leigh, Manchester, WN7 3XZ

tel: 

+44 1133 503 111

fax: 

+44 1133 503 110

mail:  

uksales@snom.com

18 Commerce Way, Suite 6000

Woburn, MA  01801

tel:  

+1-781-569-2044 

fax:  

+1-781-569-2045 

mail:  

infoUSA@snom.com

General InformatIon

•  Weight, with footstand: approx. 900g
  without footstand: approx. 670g
•  Certifications: FCC Class B, CE Mark
•   Average power consumption with PoE:  

2.0-2.4 W (without USB peripherals)

•  1 x LAN, 1 x PC:  RJ45 (Ethernet)
•  Power:  Input voltage 5V DC, max. 10 W
•  Ethernet: 2 x IEEE 802.3/1 Gigabit Switch
•  Power over Ethernet: IEEE 802.3af, Class 2
•   USB port: 1 x type A, USB 2.0 Hi/Full/Low 

Speed-compatible host interface 

•  Handset: 4P4C connector
•   Headset: (wired) 4P4C connector or wireless 

via snom EHS Advanced

(1)

• Colors: Black and light-gray

USer InterfaCe 

•  High-resolution TFT color display
•  3.5”, 320 x 240 pixels
•  37 keys, 9 LEDs
•   4 freely programmable keys,  

4 variable function keys

•  12 freely programmable virtual keys
•  Comfortable and intuitive menu structure
•  Incoming call indication via LED
•  Caller identification on display
•  LED indication for missed calls
  and new messages
•  Directory (up to 1000 entries)
•  Import/export of directory
•  Speed dial
•  Local dial plan
•  Lists of missed, received,
  and dialed calls (250 entries each)
•  Indication of calls on hold
•  Clock with automatic daylight-saving time,
  call duration
•  Call blocking (deny list)
•  Blocking of anonymous calls
•  Handling of up to 12 calls simultaneously
•  Auto answer mode

•  Ringtone selection, VIP ringtones,
  import of individual ringtones
•  URL dialing support
•  Localization
•  DND mode (do not disturb)
•  Speakerphone (full duplex)
•  Keyboard lock

aDDItIonal fUnCtIonS

•  Hold
•  Unattended and attended transfer
•  Music on hold

(2)

•  Call forwarding
•  5-way conferencing (bridge on phone)
•  Call park, call unpark

(2)

•  Extension monitoring, call pickup

(2)

•  Call completion on busy/not available

(2)

•  Client Matter Code (CMC)

(2)

•  Call waiting/switching between calls
•  Automatic redial on busy
•  Multicast paging
•  Multiple audio device support
•  Unified Communications with snom CTI und

snom OCS edition

WeB SerVer

•  Built in HTTP/HTTPS web server
•  Remote configuration/provisioning
•  Dial from web interface or snom CTI
•  Password protection
•  Diagnostics (tracing, logging, syslog)

SeCUrItY, QUalItY of SerVICe

•  HTTPS (server/client)
•  Transport Layer Security (TLS)
•  SRTP (RFC 3711), SIPS, RTCP,
  VLAN (IEEE 802.1X)
•  LLDP-MED

CoDeCS, aUDIo

•  Wideband audio
•  G.711 a-law, μ-law
•  G.722, G.723.1, G.726, G.729AB

•  Comfort noise generation (CNG)
•  Voice activity detection (VAD)

SIP

•  RFC 3261 compliant
•  UDP, TCP, and TLS
•  Digest/basic authentication
•  Loose routing and strict routing
•  PRACK (RFC 3262)
•  Error information support
•  Reliability of provisional responses
  (RFC 3262)
•  Early media support
•  DNS SRV (RFC 3263),  
  redundant server support
•  Offer/Answer (RFC 3264)
•  Message Waiting Indication (RFC 3842),
  subscription for MWI events (RFC 3265)
•  Dialog-state monitoring (RFC 4235)
•  In-band/out-of-band/SIP INFO DTMF
•  STUN client (NAT traversal)
•  NAPTR, (RFC 2915), rport (RFC 3581),
  REFER (RFC 3515)
•  Event list subscription support (RFC 4662)
•  Bridged line appearance (BLA)
•  Auto provisioning with PnP
•  Presence/Buddy-list feature
•  Busy lamp field support (BLF)
•  Presence publishing

InStallatIon

•  Automatic software updates
•  Automatic settings retrieval
  via HTTP/HTTPS/TFTP
•  Configuration via web interface
• Remote management via TR-069/TR-111
•  Easy WLAN binding via USB adapter

(3)

•  Static IP, DHCP
•  NTP

(1)   

snom eHS advanced available separately 

(P/n 2362)

(2)  

If supported by PBX

not included