Yealink SIP-T42G
Multi-function paperless Gigabit IP phone
End of Life. Sales ended April 1, 2020. Support ended April 1, 2025. See the EOL notice and replacement options- Brand
- Yealink
- Series
- T4 Series
- Model
- SIP-T42G
- Status
- End of Life
- End of Sale
- April 1, 2020
- End of Life
- April 1, 2025
- Documents
- 39 manuals & files
- Knowledge base
- 4 articles
End of Life · still supported
We still support the Yealink SIP-T42G
Yealink has stopped supporting the SIP-T42G, but plenty are still in use. The Tech Team™ keeps them working, and helps you move on only when it makes sense.
Setup & provisioning
Add, reset or re-provision SIP-T42G phones on your system, including new accounts and line keys.
Firmware & security
Install the last firmware Yealink released for the SIP-T42G and lock down its settings.
Troubleshooting
Registration failures, one-way audio, dropped calls, boot loops and factory resets.
Replace when you're ready
Matched to a current Yealink model and set up with your extensions and buttons.
Replacement optionsOverview
About the Yealink SIP-T42G
The SIP-T42G is a feature-rich SIP phone for business. The 12-line IP 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 programmableKeys, the IP Phone supports vast productivity-enhancing features. Using standard encryption protocols to perform highly secure remote provisioning and software upgrades.
Gallery
SIP-T42G product photos
Documents
SIP-T42G manuals & downloads
User Guides
2Admin Guides
3Quick Start Guides
2Deployment
4- Deploying Yealink IP Phones for Using with Skype for Business Server V9.16PDFDec 10, 2025
- Yealink Skype for Business HD IP Phones Auto Provisioning Guide V9.11PDFDec 10, 2025
- Yealink SIP IP Phones Auto Provisioning Guide V1.0PDFDec 10, 2025
- Yealink SIP Phones AutoProvisioning Template V85.5ZIPDec 10, 2025
Other Downloads
23- Yealink SIP IP Phones XML Browser Developer's Guide V1.0PDFJun 15, 2026
- Yealink Configuration Encryption Tool User Guide V1.2PDFApr 3, 2026
- Calling and Connected Line Identification Presentation on Yealink IP PhonesPDFApr 3, 2026
- LDAP Directory on Yealink IP PhonesPDFApr 3, 2026
- Recovery Mode on Yealink IP Phones V86PDFApr 3, 2026
- Server Redundancy on Yealink IP PhonesPDFApr 3, 2026
Show 17 more other downloadsShow fewer
- OpenVPN Feature on Yealink IP Phones V1.0PDFApr 3, 2026
- Using Security Certificates on Yealink IP Phones V1.0.pdfFILEApr 3, 2026
- Using Ribbon Features on Yealink IP Phones V1.0PDFApr 3, 2026
- Using Enhanced DSS Keys on Yealink IP Phones V1.0PDFApr 3, 2026
- VLAN Feature on Yealink IP PhonesPDFApr 3, 2026
- Yealink 802.1X AuthenticationPDFApr 3, 2026
- Yealink Configuration Generator Tool User Guide V86PDFApr 3, 2026
- Instructions on Yealink's SDK for Yealink Android Phones V1.4PDFDec 3, 2025
- Yealink IP Phone Features Integrated with BroadSoft UC-One User Guide V1.3.pdfFILEOct 24, 2025
- Yealink SIP Phones Integrated with Metaswitch Configuring Guide V1.5PDFOct 24, 2025
- Yealink SIP Phones Integrated with Metaswitch CommPortal Phone Applications User Guide V1.6PDFOct 24, 2025
- Yealink Regulatory Notice V1.2PDFOct 24, 2025
- Yealink Limited WarrantyPDFOct 24, 2025
- Yealink Limited Warranty for the European Union and UKPDFOct 24, 2025
- Yealink IP Phones Deployment Guide for BroadSoft UC-One Environment V1.6PDFOct 24, 2025
- Using Security Certificates on Yealink Skype for Business HD IP Phones V9.11PDFOct 22, 2025
- VLAN Feature on Yealink IP Phones V9.11PDFOct 22, 2025
Knowledge base
SIP-T42G how-to articles
Related
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SIP-T48U
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Support & downloads
SIP VP-T49G
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SIP-T40G
Ultra-elegant business IP phone
Support & downloadsNeed help with your SIP-T42G?
The Tech Team™ can provision, update and troubleshoot your Yealink phones, and move your office onto smplVoice cloud voice.
Yealink and Yealink product names are trademarks of Yealink Network Technology Co., Ltd. Product information, images and documents are published by Yealink (source) and provided here for reference by smplVoice. Firmware and documents are Yealink’s original, unmodified files.