Yealink SIP-T20

Yealink SIP-T20 is a corporate phone for 2 accounts with the Titan voice engine from Texas Instruments, support for 2 SIP lines with independent configuration, two ports.

Yealink SIP-T20 is a 2-account corporate phone with the Titan voice engine from Texas Instruments.

Phone specifications

• Support for 2 SIP lines with independent configuration.
• Fully Russified: has a Russian menu and web interface. Display and input of contacts in Russian.
• 2 programmable buttons with light indication.
• Phone book (300 entries), phone book export/import, black list, call history (100 entries), speed and accelerated dialing, dialing rules.
• Keypad lock, volume control, ringtone selection.
• Call hold and waiting, call forwarding and transfer, DND mode, conference calling, call pickup, intercom calls (including group intercom call: Paging), hotline, auto answer, emergency call, auto redial mode.
• Voicemail.
• Control and configure your phone from the keyboard, via a web interface or remotely.
• Automatic configuration and software update via Autoprovision server (TFTP/FTP/HTTP/HTTPS/PNP/DHCP). TR069 protocol support.

Network characteristics

• Support for SIP 2.0 protocol (RFC3261).
• NAT transverse support: STUN mode.
• 3 network modes: DHCP/static IP/PPPoE.
• Support VLAN (IEEE 802.1p/q tagging); TOS (layer 3).
• Supports in-band DTMF, out-of band RFC2833 DTMF and SIP INFO.
• Support for encryption and identification standards (MD5 and MD5-sess), support for SRTP and TLS.

Working with voice

• High-quality voice transmission thanks to the TI Titan chipset and voice engine.
• Sound range from 50Hz to 7kHz.
• Support for wideband codec G.722, support for standard codecs G.711, G.726, G.729AB, G.723.1.
• Support VAD (Voice Activity Detection), CNG (Comfort Noise Generator), AEC (Acoustic Echo Cancellation), NLP (Noise Loss), AGC (Automatic Gain Control).
• High quality sound, high quality speakerphone (IEEE 1329 compliant).

Physical characteristics

• Two RJ-45 ports (NAT and Bridge modes).
• Headset jack RJ9(4P4C).
• LCD: 3 lines.
• Power: DC 5V, 1.2A
• Possibility of wall mounting.
• Working temperature: 0°~40°.