
Yealink SIP-T23P
Cost-effective HD voice IP Phone
End of Life. Sales ended June 30, 2018. Support ended June 30, 2023. See the EOL notice and replacement options- Brand
- Yealink
- Series
- T2 Series
- Model
- SIP-T23P
- Status
- End of Life
- End of Sale
- June 30, 2018
- End of Life
- June 30, 2023
- Documents
- 36 manuals & files
- Knowledge base
- 4 articles
End of Life · still supported
We still support the Yealink SIP-T23P
Yealink has stopped supporting the SIP-T23P, 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-T23P phones on your system, including new accounts and line keys.
Firmware & security
Install the last firmware Yealink released for the SIP-T23P and lock down its settings.
Latest firmwareTroubleshooting
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-T23P
SIP-T23PYealink SIP-T23P features intuitive user interface and enhanced functionality which make it easy for people to interact and maximize productivity. Yealink HD technology enables rich, clear, life-like voice communications, outsourced management options, flexible deployment and third-party communications applications. As a cost-effective IP solution, it helps users to streamline business processes, delivery a powerful, security and consistent communication experience for small and large offices environment.Key Features and BenefitsHD AudioYealink HD Voice refers to the combination of software and hardware design as well as the implementation of wideband technology to maximize the acoustic performance. Coupled with advanced acoustic clarity technology such as full duplex, echo cancellation, adaptive jitter buffer etc., the SIP-T23P provides clearer, more lifelike voice communications.Enhanced Call ManagementThe SIP-T23P supports vast productivity-enhancing features such as XML Browser, call park, call pickup, BLF, call forward, call transfer, 3-way conference, which makes it the natural and obvious efficiency tool for today’s busy small and large offices environment. Efficient Installation and ProvisioningThe Yealink SIP-T23P supports efficient provisioning and effortless mass deployment with Yealink’s Redirection and Provisioning Service (RPS) and Boot mechanism to help you realize the Zero Touch Provisioning without any complex manual settings, which makes the SIP-T23P simple to deploy, easy to maintain and upgrade.Highly secure transport and interoperabilityThe communicator uses SIP over Transport Layer Security (TLS/SSL) to provide service providers with the latest technology for enhanced network security. The range is certified compatible with 3CX and Broadsoft Broadworks, ensuring excellent compatibility with leading soft switch suppliers.
Gallery
SIP-T23P product photos

Documents
SIP-T23P manuals & downloads
Admin Guides
2Quick Start Guides
3Deployment
2Other Downloads
21- 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 15 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
Firmware
SIP-T23P firmware & release notes
- SIP-T23P 44.84.0.140 - Release NotePDFReleased Nov 4, 2025Withdrawn by Yealink
- SIP-T23P 44.84.0.140 - FirmwareROMReleased Nov 4, 2025Withdrawn by Yealink
Knowledge base
SIP-T23P how-to articles
Need help with your SIP-T23P?
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.









