Yealink T42S

Without Power Adapter
The Yealink SIP T42S is a feature-rich IP phone for business. The 12-line phone has been designed by pursuing ease of use in even the tiniest details, delivering a superb sound quality as well as rich visual experience. Supports seamless migration to GigE-based network infrastructure. With programmable Keys, the IP Phone supports vast productivity-enhancing features and uses standard encryption protocols to perform highly secure remote provisioning and software upgrades.


  • 12 Lines
  • Power over Ethernet (PoE)
  • Ethernet Pass-Through
  • Category: Executive
  • Manufacturer: Yealink
  • Model: SIP-T42S
  • Speakerphone
  • Gigabit
  • Multiple Lines

Technical Info


Speakerphone: Full-Duplex

Supported Codecs: G.711(A/μ), G.723, G.729AB, G.726, GSM, Opus

Provisioning Method: HTTP, HTTPS, FTP, TFTP, WEB GUI

Protocol Supported: SIP

Mass Provisioning: Yes

MWI Support: Yes

EHS Support: Yes

Opus Codec Support: Yes

Hearing Aid Compatible (HAC) Handset: Yes


Lines: 12

RJ45 Ports: 2

RJ9 Headset Interface: Yes

Desktop Paging: Yes

Gb Ethernet Support: Yes

USB 2.0 Support: Yes


Soft Keys: 4

Voicemail Key: Yes

Hold Key: Yes

Speakerphone Key: Yes

Mute Key: Yes

Headset Key: Yes