Yealink SIP T42S

Yealink SIP T42S

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.

Model #: T42S

  • Revolutionarily new design
  • Yealink Optima HD voice
  • Dual-port Gigabit Ethernet
  • 2.7″ 192×64-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
  • Wall mountable
  • Simple, flexible and secure provisioning options

Audio Features

  • HD Voice: HD handset, HD speaker
  • Codecs: G722,G711(a/u), G723, G723.1,G729AB, G726, 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
  • Call hold, mute, DND
  • One-touch speed dial, hotline
  • Call forward, call waiting, call transfer
  • Group listening, SMS, emergency call
  • Redial, call return, auto answer
  • 3-way conferencing
  • Direct IP call without SIP proxy
  • Ring tone selection/import/delete
  • Set date/time manually or automatically
  • Dial plan
  • XML browser
  • Active URL/URI
  • RTCP-XR (RFC3611, VQ-RTCPXR, RFC6035)

Directory

  • Local phonebook up to 1000 entries
  • Black list
  • XML/LDAP remote phonebook
  • Smart Dialing
  • Intelligent search method
  • Phonebook search/import/export
  • Call history: dialed/received/missed/forwarded

IP-PBX

  • Busy Lamp Field (BLF)
  • Bridged Line Appearance (BLA)
  • Anonymous call, anonymous call rejection
  • Hot-desking
  • Message Waiting Indicator (MWI)
  • Voice mail
  • Call park, call pickup
  • Intercom, paging
  • Music on hold
  • Call completion
  • Call recording

Display & Indicators

  • 2.7″ 480 x 272-pixel color display with backlight
  • LED for call and message waiting indication
  • Dual-color (red/green) illuminated LEDs for line status information
  • Intuitive user interface with icons and soft keys
  • Multilingual user interface
  • National language selection
  • Caller ID with name, number and photo
  • Call Timer

Feature Keys

  • 6 line keys with LED
  • 6 line keys can be programmed up to 15 various features (3-page view)
  • 5 feature 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 0
  • 1 x RJ9 (4P4C) handset port
  • 1 x RJ9 (4P4C) headset port
  • 1 x RJ12 (6P6C) EXT port

Management

  • Configuration: browser/phone/auto-provision
  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
  • Auto-provision with PnP
  • Reset to factory, reboot

Network & Security

  • SIP v1 (RFC2543), v2 (RFC3261)
  • Call server redundancy supported
  • NAT transverse: STUN mode
  • Proxy mode and peer-to-peer SIP link mode
  • IP assignment: static/DHCP/PPPoE
  • HTTP/HTTPS server
  • Time and date synchronization using SNTP
  • UDP/TCP/DNS-SRV(RFC3262)
  • 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

Other

  • Stand with 2 adjustable angles
  • Wall mountable
  • External universal AC adaptor (optional)
  • Dimensions (mm): 244W x 213D x 54H

Quick Start Guide: Yealink_SIP-T42S_Quick_Start_Guide_V82_20

User Guide: Yealink_SIP-T42S_User_Guide_V81_90

Datasheet: Yealink SIP-T42S Datasheet