The Yealink T42S is an ultra-functional professional tool that delivers high-definition audio quality.
Its user-oriented interface is faster, more responsive and offers unprecedented performance improvements.
Yealink Optima HD Voice technology combines state-of-the-art hardware with broadband technology for optimal acoustic performance.
With Opus, a codec designed to deliver HD audio quality, you get a quality that's superior to other broadband codecs.
Facilitated call management
Equipped with a brand-new USB port, the SIP-T42S is powerful, expandable and ready for recording functions and Bluetooth dongle support.
Simplify your installation
Thanks to its auto-provisioning feature, the T42S offers you flexibility and effortless large-scale deployment.
The new common firmware on the range ensures consistency across your fleet.
Narrowband: G.711 / G.729a
Dual-Tone Multi-Frequency (DTMF): In-band, Out-of-band (RFC 2833) and SIPINFO
Full-duplex Acoustic Echo Compensator (AEC) speaker
One-touch dialing and quick redial
Call forwarding, call in wait
Call transfer, put call in wait
Callback, group listening
Discretionary mode, automatic response
Do Not Disturb (DND)
1 USB port
- Bluetooth support via BT40
- Call recording on USB
Anonymous calling, anonymous call rejection
Shared office, voicemail
Local directory with up to 1000 entries
Remote Directory XML/LDAP
Call history: dialed/received/missed/transferred
192 x 64 pixel backlit LCF display
Message and call waiting indicator light
Two-colour (red and green) LEDs for line status information
Intuitive user interface with icons and programmable keys
Up to 12 line keys
Up to 15 monitoring keys (displayed on 3 pages)
5 function keys: message, headset, silent mode, auto redial, hands-free speakerphone
4 context-sensitive keys
6 navigation keys
2 volume control keys
Illuminated mute mode key
Illuminated headset key
Illuminated hands-free speakerphone key
2 Gigabit Ethernet ports
POE Power over Ethernet (IEEE 802.3af), Class 2
1 USB port (2.0 compliant)
1 RJ9 handset port (4P4C)
1 RJ9 headset port (4P4C)
1 EHS RJ12 port (6P6C)