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Yealink SIP-T42S B&W IP Phone

The SIP-T42S IP phone is a dynamic business communications tool for superior voice communications and extended functionality. It has a faster, more responsive interface than the T42G and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys for enhancing productivity. It is with Yealink Optima HD Voice Technology and wideband codec of Opus for superb sound quality and crystal clear communications. What’s more, the SIP-T42S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the SIP-T42S boasts unparalleled functionality and expansibility with Bluetooth, Wi-Fi and USB recording features. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.

Yealink SIP-T42S Summary

Revolutionarily new design
The Yealink SIP-T42S has been designed by pursuing ease of use in even the tiniest details. The Yealink SIP-T42S boasts a paperless label design, a new foot stand with two positions for the device, non-slip rubber feet, and ergonomic recessed buttons.

HD Audio
Yealink Optima HD Voice refers to the combination of software and hardware design as well as the implementation of wideband technology to maximizes the acoustic performance. Coupled with advanced acoustic clarity technology such as full duplex, echo cancellation, and adaptive jitter buffer.

Enhanced Call Management
The SIP-T42S supports vast productivity-enhancing feature such as SCA, BLF List, call forward, call transfer, 3-way conference. Three pages of 6 flexible buttons are shown on the display, and can be programmed up to 15 various features. The T42S supports the Yealink YHS32, and when combined with the Yealink EHS36, a user can control phone calls through their wireless headset.

Efficient Installation and Provisioning
Dual-port Gigabit Ethernet is designed for flexible deployment options and lower cabling expenses. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup.The SIP-T42S supports FTP, TFTP, HTTP, and HTTPS protocols for file provisioning and uses Trivial File Transfer Protocol (TFTP) by default. The T42G supports AES encrypted XML configuration files.

Highly secure transport and interoperability
The T42S uses SIP over Transport Layer Security (TLS/SSL) to provide service providers the latest technology for enhanced network security. The range is certified compatible with 3CX, Asterisk and Broadsoft Broadworks, ensuring compatibility with leading soft switch suppliers.

Yealink SIP-T42S Core Features

  • Revolutionarily new design
  • Yealink Optima HD voice
  • Dual-port Gigabit Ethernet
  • 2.7" 192x64-pixel graphical LCD with backlight
  • Up to 12 SIP accounts
  • Paper label free design
  • PoE support
  • Headset, EHS support
  • Integrated stand with 2 adjustable angles
  • Simple, flexible and secure provisioning options

Yealink SIP-T42S Technical Specifications


Audio Features

  • HD voice: HD handset, HD speaker
  • Wideband codec: G.722
  • Codecs: G.722, G.711(A/μ), G.723, G.729AB, G.726, GSM
  • 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
  • Call history: dialed/received/missed/forwarded
  • 3-way confernecing
  • Direct IP call without SIP proxy
  • Ring tone selection/import/delete
  • Hotline, Emergency call
  • Set date time manually or automatically
  • Dial Plan, Push XML, Action URL


Directory

  • Loal phonebook up to 300 entries
  • Broadsoft Contacts: Custom/Enterprise/Personal/Common/Search/Speed Dial
  • Black list
  • XML/LDAP remote phonebook
  • Intelligent search method
  • Phonebook search/import/export


IP-PBX and BroadSoft Features

  • Busy lamp field (BLF), BLF list
  • Bridged line apperance(BLA)/SCA
  • Anonymous call, Anonymous call rejection
  • DND & forward synchronization
  • BroadWorks Anywhere
  • N-Way Calling, Remote Office
  • Network Call Logs - Basic
  • Broadsoft call center features
  • Message waiting indicator (MWI)
  • Voice mail,Call park, Call pickup
  • Intercom, paging, Music on hold
  • Call recording


Display and Indicator

  • 2.7" 192x64 pixel 4-level grayscale graphical LCD with backlight
  • LED for call and message waiting indication
  • Dual-color (red or green) illuminated LEDs for line status information
  • Intuitive user interface with icons and soft keys
  • National language selection
  • Caller ID with name, number


Feature keys

  • 6 line keys with LED
  • 6 line keys can be programmed up to 15 various features (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
  • 1xRJ9 (4P4C) handset port
  • 1xRJ9 (4P4C) headset port
  • Power over Ethernet (IEEE 802.3af), Class 2


Other Physical Features

  • Stand with 2 adjustable angles
  • External Universal AC Adapter (optional): AC 100~240V input and DC 5V/2A output
  • Power consumption (PSU): 1.4W-3.9W
  • Dimension(W*D*H*T): 212mm*189mm*175mm*54mm
  • Operating humidity: 10~95%
  • Storage temperature: -10~50°C


Management

  • Configuration: browser/phone/auto-provision
  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
  • Auto-provision with PnP
  • BroadSoft device management
  • Zero-sp-touch, SNMP
  • Provisioning server redundancy supported
  • Reset to factory, Reboot
  • Package tracing export, System log


Network and Security

  • SIP v1 (RFC2543), v2 (RFC3261)
  • NAT transverse: 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