Snom 821

Snom 821 is a business class IP phone with a high-resolution 3.5” TFT color display (320x240 pixels) with support for broadband codecs, has a built-in 1 Gigabit Ethernet switch, and supports POE.

Snom 821 is a business class IP phone with a high-resolution 3.5” TFT color display, 320x240 pixels. The Snom 821 supports broadband codecs and has a built-in 1 Gigabit Ethernet switch. Since security is one of the most important issues of our time, it has always been for Snom. Therefore, such important security features as secure VPN, TLS and SRTP are an integral part of the Snom 821 phone’s programmable hardware. Like its older brother, the Snom 870, the Snom 821 has an integrated 1 Gigabit Ethernet switch.

The large, high-resolution colour display of the snom 821 (8.9 cm (3.5"), 320 x 240 pixels) offers excellent viewing of call lists, phone directories and incoming call information via the integrated XML browser. , more than doubles the frequency spectrum, resulting in sound quality comparable to FM radio. The Class D speakerphone is equipped with noise reduction.

Main characteristics

Color 3.5" TFT display. High resolution, 320x240 pixels;

Support for wideband codecs;

Ensuring protection and safety;

Built-in 1 Gigabit Ethernet switch;

SIP support;

Support Power over Ethernet;

WLAN support via USB;

Support for Russian language of control interface;

Built-in XML browser;

Possibility to order in two colors: black, light gray;

Brief technical specifications:

Connectors

· 1 x LAN, 1 x PC: RJ45 (Ethernet);

· Ethernet: 2 x IEEE 802.3/1 Gigabit Switch;

· Power over Ethernet: IEEE 802.3af, Class 2;

· RJ-4P4C connector for connecting the handset;

· RJ-4P4C connector for connecting a headset;

· 1 x USB Type A, 1 x Type B;

· power supply 5 volts, direct current;

Interface

· High-resolution color TFT display. 3.5 inches, 320 x 240 pixels;

· 37 keys, 9 LEDs;

· 4 freely programmable and 16 customizable keys;

· 12 virtual keys;

· comfortable and intuitive menu structure;

· light indication of incoming calls and indication of missed calls and new messages;

· displaying information about the subscriber on the screen;

· address book up to 1000 entries;

· import/export of Address Book entries;

· speed dialing;

· internal numbering plan;

· lists of missed, received and dialed calls (up to 250 entries in each list);

· call hold indication;

· clock with automatic switch to summer/winter time;

· measuring and displaying connection duration;

· blocking incoming calls (“black list”);

· the ability to block calls without caller ID;

· servicing up to 12 simultaneous calls;

· automatic answer mode for incoming calls;

· selection of individual ringtones for various calls, special ringtones for calls from mobile phones;

· the ability to download your own melodies;

· support for URL calls;

· customizable control interface languages;

· Do Not Disturb (DND) mode;

· full-duplex hands-free mode;

· keyboard lock;

Codecs and protocols

· RFC 3261 compliant;

· UDP, TCP, TLS;

· list/simple authentication;

· support for loose routing/strict routing;

· compatibility with PRACK (RFC 3262);

· display of informational messages about errors;

· support for Early media mode;

· work with SIP servers via DNS SRV (RFC 3263);

· forced response to a command from the server (RFC 3264);

· indication of incoming second call (RFC 3842);

· indication of new messages received (RFC 3265);

· displaying the status of other subscribers (RFC 4235);

· in-band/out-of-band DTMF/SIP INFO DTMF;

· STUN client (NAT traversal);

· ENUM (RFC 3261), NAPTR, (RFC 2915), rport (RFC 3581), refer (RFC 3515);

· the ability to obtain address book entries from a SIP server (RFC 4662);

· BLA, BLF support;

· support for presence information from the contact list;

· G.711 a-law, μ-law, G.722, G.723.1, G.726, G.729AB, GSM, iLBC, AMR;

· comfortable noise (CNG);

· Voice Activity Detection (VAD);

Additional functions

· possibility of WLAN connection via USB Wi-Fi adapter (supplied separately);

· call content and music on hold (in conjunction with IP-PBX);

· call transfer, transfer with consultation;

· playback of music on the content (in conjunction with IP-PBX);

· call forwarding;

· telephone support for up to five participants in a conference;

· parking, call interception (in conjunction with IP-PBX);

· automatic call termination due to “busy”/“no answer”;

· customizable codes for making long-distance/international calls (Client Matter Code);

· indication of a second call, switching between calls;

· automatic redialing;

· support for group voice transmission (RTP multicast);

· support for modules (headsets, etc.);

· support for UC Microsoft Snom CTI/Snom OCS solutions;

· built-in HTTP/HTTPS Web server;

· remote configuration capability;

· the ability to dial a number via a WEB browser or Snom CTI;

· password for access control;

· diagnostics (tracy, logs, syslog);

· auto-initialization using PnP;

· automatic updating of internal software;

· automatic retrieval of settings via HTTP/HTTPS/TFTP;

· support for remote administration of TR 069;

· DHCP support;

· time synchronization via NTP;

QoS

· HTTPS support (server/client);

· Transport Layer Security (TLS);

· SRTP (RFC 3711), SIPS, RTCP, VLAN (802.1pq).