Product Overview

Ideal for the office and everyone who spends a lot of time on the phone, the snom 320 is an affordable, yet powerful SIP business phone with built-in, full-duplex speakerphone and three-party conference bridging.

Display and Keys

A 2 x 24 semi-graphic LCD display and menu-driven user interface support an uncomplicated feature management. 12 programmable keys with LEDs support quick access to important extensions. Call list and address book can contain up to 100 entries each, and entries can be added and changed easily.

Functions

Other features like blocking anonymous calls, downloading ringtones, auto-answer mode, DND mode, and other features are only examples from an abundance of functions which make phone use convenient and comfortable while increasing productivity. Additional applications like CTI further enhance the functionality.

Installing

Installing the snom 320 is child's play and possible on the phone itself as well as by remote configuration. Further advantages are extensive Codec support and wide-ranging compatibility with SIP components made by other manufacturers. The support of STUN, NAT, ENUM, and numerous other functions allows flexible utilization behind local proxies, IP PBXs, and hosted VoIP services. Concerning security, the snom 320 protects you with SRTP and TLS against wiretapping and unwanted access to signaling and authentication data.

Three-Way Conference

The snom 320's built-in three-way conference bridge eliminates external devices and services while offering high audio quality and minimal latency. These savings together with the snom 320's very low energy consumption (1.0 to 1.5 w-hrs in standby) and PoE (Power over Ethernet) truly help to lower your costs.

Physical Specifications

Dimensions	250 x 200 x 120 mm
Weight	920g
Certification	FCC Class B CE Mark
Power Consumption	2.1- 2.4 Watts

Phone Interface

External Interface

1 x LAN 1 x PC (RJ45) 1 x Power 2 x 10/100 Ethernet 1 x Handset RJ 4P4C Connector 1 x Headset RJ 4P4C Connector 1 x Expansion Module Connector

Phone Features

User Interface

- 2 x 24 character, tiltable semi-graphical - 47 keys, 12 programmable function keys with LEDs - Caller-ID - Message waiting indication LED - Address book (100 entries) - Speed dialing - Local dial plan - Number guessing - Lists of missed, received and dialed calls - Call waiting indication - Clock, daylight saving, call-timer - Call blocking (deny list) - Blocking of anonymous calls - Handling of up to 12 calls simultaneously - Menu-driven user interface - URL Dialing support - Ring tone selection, import of individual ring tones - National language support for selected languages - Do not disturb - Speakerphone - Auto answer mode - Keyboard lock

Call Features

- Hold - Blind transfer, attended transfer - Music-on-hold support (only via PBX) - Divert - Conferencing (3-way conference bridge on phone) - Call park, call pickup (only via PBX) - Call completion - Client Matter Code (CMC) - Call waiting/switching between calls - Redialing - RTP multicast paging - Multiple audio device support

Network Specifications

Web Server	- Embedded web server HTTP/HTTPS - Easy configuration of the phone, remote configuration - Dial from web interface - Password protection - Diagnostics (tracing, logging, syslog)
Security, QoS	- HTTPS (server/client) - Transport Layer Security (TLS) - SRTP (RFC3711), SIPS - RTCP, S-RTCP - VLAN (IEEE 802.1X) - LLDP-MED
Audio Codec	- G.711 A-law, µ-law - G.722, G.729A, G.723.1, G.726 - GSM 6.10 (full rate) - Comfort noise, voice activity detection
SIP	- RFC3261 compliance - UDP, TCP and TLS - Digest/basic authentication - PRACK (RFC3262) - Error-information support - Reliability of provisional responses(RFC3262) - Early media support - DNS SRV (RFC3263), redundant server support - Offer/answer (RFC3264) - MWI (RFC3842), MWI events (RFC3265) - Dialog-state monitoring (RFC 4235) - In-band DTMF/out-of-band DTMF/SIP INFO DTMF - STUN client, ICE (NAT traversal) - ENUM (RFC3261), NAPTR (RFC2915) - rport (RFC3581), REFER (RFC3515) - Bridged line appearance (BLA) - Auto provisioning with PnP - Busy lamp field support (BLF)
Installation	- Automatic software update - Automatic settings retrieval via HTTP/HTTPS/TFTP - Installation via web interface - Static IP provisioning, DHCP - NTP