snom 820

Technical Specifications

Hardware

Power supply: 5V DC Stabilized

Temp range: 0 C to 40 C (32°F to 104°F)

Audio: CNG- Comfort Noise generation, VAD- Voice Activity detections Dynamic Jitter-Buffer, Loudspeaker. Voice compression, Echo compression, Silence suppression

Connector:
Network: (2) 10/100 BaseT E auto-detect RJ45 (Ethernet), Handset: RJ14 Standard
Headset: Standard Computer and RJ Connector

Software

Operating System: Linux

Configuration: Via web browser & menu

Protocols Internet: IP, TCP, UDP, DHCP, TLS, SIP, SIPS, SRTP

VoIP: Static IP provisioning, DHCP, SIP RFC3261 compliant, Digest authentication, Loose routing and strict routing support, Error-information support, VLAN (802.1 P/Q),
Reliability of provisional responses (RFC3262), DNS SRV (RFC3263), redundant server support, Offer/answer (RFC3264), Message waiting indication reception (RFC3842), MWI events (RFC3265), Dialog-State, STUN client (NAT traversal), ΕNUM (RFC3261), ΝAPTR (RFC2915), rport (RFC3581), REFER (RFC3515), Outbound proxy support, initial route

Voice encoding: G.711 aLaw, uLaw, G.722 (16Khz), G.723.1, G.726, G.729A, GSM 6.10 (Full rate), In-band DTMF, Out-of-band DTMF (RFC2833)

Security: HTTPS (server/client), Transport Layer Security (TLS), SRTP (RFC3711), Certificates can be loaded into device