- 12-line IP phone with multiple programmable keys
- Offers High-definition audio with an AEC speaker
- Integrated 2.7" 192x64-pixel graphical LCD with backlight
- Opus* codec support for enhanced audio performance
- T4S Auto-P template and T4S firmware unified
- Dual-port Gigabit Ethernet and USB 2.0 support
- Paperless label design; wall-mountable for space convenience
- Integrated stand and 2 adjustable angles for ergonomic positioning
Yealink SIP-T42S IP Phone Description
Need a reliable SIP business phone for enhanced communication? The Yealink SIP-T42S IP Phone is a powerful, dynamic communications device you should consider. It is designed for superior voice clarity and efficiency and offers a faster, more responsive interface than its predecessor for a seamless user experience. This business phone model from Yealink is equipped with Yealink Optima HD Voice Technology to deliver crystal-clear audio, ensuring that every conversation is crisp and professional. Set it up in a bustling office or a quiet workspace and enjoy exceptional sound quality, making every call effortless.
Built for speed and performance, the SIP-T42S features Gigabit Ethernet for rapid call handling and seamless connectivity. Its all-new USB port expands functionality, supporting Bluetooth, Wi-Fi, and USB recording, giving you unmatched flexibility in communication. The intuitive 2.7" 192x64-pixel graphical LCD with backlight ensures an easy and user-friendly experience, while the paperless label design enhances organisation and efficiency. Supporting Power over Ethernet (PoE), the phone reduces cable clutter and ensures a clean, professional workspace.
The SIP-T42S is designed for versatility; it supports up to 12 SIP accounts, making it perfect for growing businesses. Its dual-port Gigabit Ethernet ensures fast and reliable network performance, while EHS headset compatibility enhances convenience for hands-free calling. It has the same sleek appearance as the T4 series but with improved interoperability and collaboration features, this IP phone is built to meet the demands of modern business communications.
Optima HD Audio
Integrated with Yealink Optima HD Voice technology, the Yealink SIP-T42S IP Phone stands out with high-definition audio making it suitable for business environments like customer service, sales, and remote collaboration, where voice communication is critical for daily operations. It combines cutting-edge hardware and software, such as wideband audio codecs (Opus, G.722) and advanced acoustic echo cancellation (AEC), to deliver a natural, life-like voice experience. Wideband technology ensures maximum acoustic performance for every call even in a high network bandwidth. It is equipped with a Hearing Aid Compatible (HAC) handset, making it accessible for users with hearing impairments.
Easy Customisation and High Expansibility
The SIP-T42S is designed to meet the growing demand of modern businesses. Engineered with an all-new USB port, this IP phone brings enhanced flexibility and seamless integration with Bluetooth, Wi-Fi, and USB recording features. Bluetooth compatibility enables you to connect wireless headsets for greater mobility and hands-free communication. With this, professionals can multitask efficiently during calls. The phone is also designed with three pages of flexible buttons which can be programmed with up to 15 paperless DSS keys.
Seamless Connectivity with PoE Support
The dual-port Gigabit Ethernet support on the Yealink SIP-T42S allows businesses to run voice and data services without lag, improving the overall efficiency of their network performance. It provides high-speed data transmission and seamless call handling. Gigabit Ethernet provides ten times the speed, reducing latency and ensuring smooth, uninterrupted voice calls, even in high-traffic network environments. Additional Power over Ethernet (PoE) support eliminates the need for separate power adapters.
Efficient Installation
The T4S Business IP Phone is simple to deploy and easy to maintain and upgrade. Unified firmware and auto templates save more time and costs. It simplifies management and maintenance for businesses. The phone is versatile and wall mountable for space efficiency. The SIP-T42S uses the latest network security technology—SIP over Transport Layer Security (TLS/SSL). It’s also compatible with leading soft switch suppliers 3CX and Broadsoft Broadworks.
What's in the Box?
- Yealink SIP-T42S IP phone
- Handset with Handset Cord
- Ethernet Cable (2m CAT5E UTP Cable)
- Stand
- Quick Start Guide.
Yealink SIP-T42S IP Phone Specification
Audio Features
- HD voice: HD handset, HD speaker
- Hearing aid compatible (HAC) handset
- Wideband codec: Opus*, G.722
- Narrowband codec: Opus*, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC
- DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
- Full-duplex hands-free speakerphone with AEC
- VAD, CNG, AEC, PLC, AJB, AGC
Phone Features
- 12 VoIP accounts
- One-touch speed dial, redial
- Call forward, call waiting
- Call transfer, call hold
- Call return, group listening
- Mute, auto answer, DND
- 3-way conference call
- Direct IP call without SIP proxy
- Ring tone selection/import/delete
- Hotline, emergency call
- Set date time manually or automatically
- Dial plan, XML Browser, Action URL/URI
- RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
- USB port (2.0 compliant): Bluetooth earphone through BT40, Wi-Fi through WF40, USB call recording through USB flash drive
- Enhanced DSS key
Directory
- Local phonebook up to 1000 entries
- Black list
- XML/LDAP remote phonebook
- Smart dialing
- Phonebook search/import/export
- Call history: dialed/received/missed/forwarded
IP-PBX Features
- Busy Lamp Field (BLF)
- Bridged Line Apperance (BLA)
- Anonymous call, anonymous call rejection
- Hot-desking, voice mail
- Flexible seating
- Call park, call pickup
- Executive and Assistant
- Centralized call recording
- Visual voice mail
- Call recording
Display and Indicator
- 2.7" 192x64-pixel graphical LCD with backlight
- LED for call and message waiting indication
- Dual-colour (red or green) illuminated LEDs for line status information
- Intuitive user interface with icons and soft keys
- Multilingual user interface
- Caller ID with name and number
- Power saving
Feature keys
- 6 line keys with LED
- 6 line keys can be programmed up to 15 paperless DSS keys (3-page view)
- 5 features keys: message, headset, mute, redial, hands-free speakerphone
- 4 context-sensitive “soft” keys
- 6 navigation keys
- 2 volume control keys
- Illuminated mute key
- Illuminated headset key
- Illuminated hands-free speakerphone key
Interface
- Dual-port Gigabit Ethernet
- Power over Ethernet (IEEE 802.3af), Class 2
- 1 x USB port (2.0 compliant)
- 1 x RJ9 (4P4C) handset port
- 1 x RJ9 (4P4C) headset port
- 1 x RJ12 (6P6C) EHS port
Other Physical Features
- Stand with 2 adjustable angles
- Wall mountable
- External Yealink AC adapter (optional: AC 100~240V input and DC 5V/1.2A output
- Power consumption (PSU): 1.7-3.2W
- Power consumption (PoE): 2.5-4.7W
- Dimension (W*D*H*T): 212mm*189mm*175mm*54mm
- Operating humidity: 10~95%
- Operating temperature: -10~50°C (+14~122°F)
Management
- Configuration: browser/phone/auto-provision
- Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
- Auto-provision with PnP
- Zero-sp-touch, TR-069
- Phone lock for personal privacy protection
- Reset to factory, reboot
- Package tracing export, system log
Network and Security
- SIP v1 (RFC2543), v2 (RFC3261)
- Call server redundancy supported
- NAT traversal: STUN mode
- Proxy mode and peer-to-peer SIP link mode
- IP assignment: static/DHCP
- HTTP/HTTPS web server
- Time and date synchronization using SNTP
- UDP/TCP/DNS-SRV(RFC 3263)
- QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
- SRTP for voice
- Transport Layer Security (TLS)
- HTTPS certificate manager
- AES encryption for configuration file
- Digest authentication using MD5/MD5-sess
- OpenVPN, IEEE802.1X
- IPv6
- LLDP/CDP/DHCP VLAN
- ICE.
More Information
| SKU | SIP-T42S |
|---|---|
| Brand | Yealink |
| Audio Conference Type | Conference Phone |
| Noise Control | None |
| Multiple Part Calling | No |
| Interface | USB & Ethernet |
| With Display | Yes |
| Connectivity | Wired |
| No. of User(s) | 1 |
| Room Size | Small |
| Display Option | Display & Keypad |
| Available Ports | Audio Port, Ethernet, USB |
| Keypad | Yes |
Reviews
Search FAQs
Questions & Answers
Yealink SIP-T42S IP Phone Description
Need a reliable SIP business phone for enhanced communication? The Yealink SIP-T42S IP Phone is a powerful, dynamic communications device you should consider. It is designed for superior voice clarity and efficiency and offers a faster, more responsive interface than its predecessor for a seamless user experience. This business phone model from Yealink is equipped with Yealink Optima HD Voice Technology to deliver crystal-clear audio, ensuring that every conversation is crisp and professional. Set it up in a bustling office or a quiet workspace and enjoy exceptional sound quality, making every call effortless.
Built for speed and performance, the SIP-T42S features Gigabit Ethernet for rapid call handling and seamless connectivity. Its all-new USB port expands functionality, supporting Bluetooth, Wi-Fi, and USB recording, giving you unmatched flexibility in communication. The intuitive 2.7" 192x64-pixel graphical LCD with backlight ensures an easy and user-friendly experience, while the paperless label design enhances organisation and efficiency. Supporting Power over Ethernet (PoE), the phone reduces cable clutter and ensures a clean, professional workspace.
The SIP-T42S is designed for versatility; it supports up to 12 SIP accounts, making it perfect for growing businesses. Its dual-port Gigabit Ethernet ensures fast and reliable network performance, while EHS headset compatibility enhances convenience for hands-free calling. It has the same sleek appearance as the T4 series but with improved interoperability and collaboration features, this IP phone is built to meet the demands of modern business communications.
Optima HD Audio
Integrated with Yealink Optima HD Voice technology, the Yealink SIP-T42S IP Phone stands out with high-definition audio making it suitable for business environments like customer service, sales, and remote collaboration, where voice communication is critical for daily operations. It combines cutting-edge hardware and software, such as wideband audio codecs (Opus, G.722) and advanced acoustic echo cancellation (AEC), to deliver a natural, life-like voice experience. Wideband technology ensures maximum acoustic performance for every call even in a high network bandwidth. It is equipped with a Hearing Aid Compatible (HAC) handset, making it accessible for users with hearing impairments.
Easy Customisation and High Expansibility
The SIP-T42S is designed to meet the growing demand of modern businesses. Engineered with an all-new USB port, this IP phone brings enhanced flexibility and seamless integration with Bluetooth, Wi-Fi, and USB recording features. Bluetooth compatibility enables you to connect wireless headsets for greater mobility and hands-free communication. With this, professionals can multitask efficiently during calls. The phone is also designed with three pages of flexible buttons which can be programmed with up to 15 paperless DSS keys.
Seamless Connectivity with PoE Support
The dual-port Gigabit Ethernet support on the Yealink SIP-T42S allows businesses to run voice and data services without lag, improving the overall efficiency of their network performance. It provides high-speed data transmission and seamless call handling. Gigabit Ethernet provides ten times the speed, reducing latency and ensuring smooth, uninterrupted voice calls, even in high-traffic network environments. Additional Power over Ethernet (PoE) support eliminates the need for separate power adapters.
Efficient Installation
The T4S Business IP Phone is simple to deploy and easy to maintain and upgrade. Unified firmware and auto templates save more time and costs. It simplifies management and maintenance for businesses. The phone is versatile and wall mountable for space efficiency. The SIP-T42S uses the latest network security technology—SIP over Transport Layer Security (TLS/SSL). It’s also compatible with leading soft switch suppliers 3CX and Broadsoft Broadworks.
What's in the Box?
- Yealink SIP-T42S IP phone
- Handset with Handset Cord
- Ethernet Cable (2m CAT5E UTP Cable)
- Stand
- Quick Start Guide.
Yealink SIP-T42S IP Phone Specification
Audio Features
- HD voice: HD handset, HD speaker
- Hearing aid compatible (HAC) handset
- Wideband codec: Opus*, G.722
- Narrowband codec: Opus*, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC
- DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
- Full-duplex hands-free speakerphone with AEC
- VAD, CNG, AEC, PLC, AJB, AGC
Phone Features
- 12 VoIP accounts
- One-touch speed dial, redial
- Call forward, call waiting
- Call transfer, call hold
- Call return, group listening
- Mute, auto answer, DND
- 3-way conference call
- Direct IP call without SIP proxy
- Ring tone selection/import/delete
- Hotline, emergency call
- Set date time manually or automatically
- Dial plan, XML Browser, Action URL/URI
- RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
- USB port (2.0 compliant): Bluetooth earphone through BT40, Wi-Fi through WF40, USB call recording through USB flash drive
- Enhanced DSS key
Directory
- Local phonebook up to 1000 entries
- Black list
- XML/LDAP remote phonebook
- Smart dialing
- Phonebook search/import/export
- Call history: dialed/received/missed/forwarded
IP-PBX Features
- Busy Lamp Field (BLF)
- Bridged Line Apperance (BLA)
- Anonymous call, anonymous call rejection
- Hot-desking, voice mail
- Flexible seating
- Call park, call pickup
- Executive and Assistant
- Centralized call recording
- Visual voice mail
- Call recording
Display and Indicator
- 2.7" 192x64-pixel graphical LCD with backlight
- LED for call and message waiting indication
- Dual-colour (red or green) illuminated LEDs for line status information
- Intuitive user interface with icons and soft keys
- Multilingual user interface
- Caller ID with name and number
- Power saving
Feature keys
- 6 line keys with LED
- 6 line keys can be programmed up to 15 paperless DSS keys (3-page view)
- 5 features keys: message, headset, mute, redial, hands-free speakerphone
- 4 context-sensitive “soft” keys
- 6 navigation keys
- 2 volume control keys
- Illuminated mute key
- Illuminated headset key
- Illuminated hands-free speakerphone key
Interface
- Dual-port Gigabit Ethernet
- Power over Ethernet (IEEE 802.3af), Class 2
- 1 x USB port (2.0 compliant)
- 1 x RJ9 (4P4C) handset port
- 1 x RJ9 (4P4C) headset port
- 1 x RJ12 (6P6C) EHS port
Other Physical Features
- Stand with 2 adjustable angles
- Wall mountable
- External Yealink AC adapter (optional: AC 100~240V input and DC 5V/1.2A output
- Power consumption (PSU): 1.7-3.2W
- Power consumption (PoE): 2.5-4.7W
- Dimension (W*D*H*T): 212mm*189mm*175mm*54mm
- Operating humidity: 10~95%
- Operating temperature: -10~50°C (+14~122°F)
Management
- Configuration: browser/phone/auto-provision
- Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
- Auto-provision with PnP
- Zero-sp-touch, TR-069
- Phone lock for personal privacy protection
- Reset to factory, reboot
- Package tracing export, system log
Network and Security
- SIP v1 (RFC2543), v2 (RFC3261)
- Call server redundancy supported
- NAT traversal: STUN mode
- Proxy mode and peer-to-peer SIP link mode
- IP assignment: static/DHCP
- HTTP/HTTPS web server
- Time and date synchronization using SNTP
- UDP/TCP/DNS-SRV(RFC 3263)
- QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
- SRTP for voice
- Transport Layer Security (TLS)
- HTTPS certificate manager
- AES encryption for configuration file
- Digest authentication using MD5/MD5-sess
- OpenVPN, IEEE802.1X
- IPv6
- LLDP/CDP/DHCP VLAN
- ICE.
| SKU | SIP-T42S |
|---|---|
| Brand | Yealink |
| Audio Conference Type | Conference Phone |
| Noise Control | None |
| Multiple Part Calling | No |
| Interface | USB & Ethernet |
| With Display | Yes |
| Connectivity | Wired |
| No. of User(s) | 1 |
| Room Size | Small |
| Display Option | Display & Keypad |
| Available Ports | Audio Port, Ethernet, USB |
| Keypad | Yes |
