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Yealink SIP-T42S IP Phone
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Yealink SIP-T42S IP Phone
Manufacturer:  ( Yealink )
83,800 AMD


Audio Features 

ü HD voice: HD handset, HD speaker

ü Hearing aid compatible (HAC) handset

ü Wideband codec: Opus, G.722

ü Narrowband codec: Opus, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC

ü DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO

ü Full-duplex hands-free speakerphone with AEC



Phone Features

ü 12 VoIP accounts

ü One-touch speed dial, redial

ü Call forward, call waiting

ü Call transfer, call hold

ü Call return, group listening

ü Mute, auto answer, DND

ü 3-way conference call

ü Direct IP call without SIP proxy

ü Ring tone selection/import/delete

ü Hotline, emergency call

ü Set date time manually or automatically

ü Dial plan, XML Browser, Action URL/URI

ü RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)

ü USB port (2.0 compliant):

   Bluetooth earphone through BT40 (pending),

   Wi-Fi through WF40 (pending),

   USB call recording through USB flash drive (pending)

ü Enhanced DSS key


ü Local phonebook up to 1000 entries

ü Black list

ü XML/LDAP remote phonebook

ü Smart dialing

ü Phonebook search/import/export

ü Call history: dialed/received/missed/forwarded

IP-PBX Features

ü Busy Lamp Field (BLF)

ü Bridged Line Apperance (BLA)

ü Anonymous call, anonymous call rejection

ü Hot-desking, voice mail

ü Flexible seating

ü Call park, call pickup

ü Executive and Assistant

ü Centralized call recording

ü Visual voice mail

ü Call recording

Display and Indicator

ü 2.7" 192x64-pixel graphical LCD with backlight

ü LED for call and message waiting indication

ü Dual-color (red or green) illuminated LEDs for line status information

ü Intuitive user interface with icons and soft keys

ü Multilingual user interface

ü Caller ID with name and number

ü Power saving

Feature Keys

ü 6 line keys with LED

ü 6 line keys can be programmed up to 15 paperless DSS keys (3-page view)

ü 5 features keys: message, headset, mute, redial, hands-free speakerphone

ü 4 context-sensitive “soft” keys

ü 6 navigation keys

ü 2 volume control keys

ü Illuminated mute key

ü Illuminated headset key

ü Illuminated hands-free speakerphone key


ü Dual-port Gigabit Ethernet

ü Power over Ethernet (IEEE 802.3af), Class 2

ü 1 x USB port (2.0 compliant)

ü 1 x RJ9 (4P4C) handset port

ü 1 x RJ9 (4P4C) headset port

ü 1 x RJ12 (6P6C) EHS port

Other Physical Features

ü Stand with 2 adjustable angles

ü Wall mountable

ü External Yealink AC adapter (optional)AC 100~240V input and DC 5V/1.2A output

ü Power consumption (PSU): 1.69-5.0W

ü Power consumption (PoE): 2.47-12.5W

ü Dimension (W*D*H*T): 212mm*189mm*175mm*54mm

ü Operating humidity: 10~95%

ü Operating temperature: -10~50°C


ü Configuration: browser/phone/auto-provision

ü Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy

ü Auto-provision with PnP

ü Zero-sp-touch, TR-069

ü Phone lock for personal privacy protection

ü Reset to factory, reboot

ü Package tracing export, system log

Network and Security

ü SIP v1 (RFC2543), v2 (RFC3261)

ü Call server redundancy supported

ü NAT traversal: STUN mode

ü Proxy mode and peer-to-peer SIP link mode

ü IP assignment: static/DHCP

ü HTTP/HTTPS web server

ü Time and date synchronization using SNTP


ü QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP

ü SRTP for voice

ü Transport Layer Security (TLS)

ü HTTPS certificate manager

ü AES encryption for configuration file

ü Digest authentication using MD5/MD5-sess

ü OpenVPN, IEEE802.1X


Package Features

ü Package content:

- Yealink SIP-T42S IP phone

- Handset with handset cord

- Ethernet Cable (2m CAT5E UTP Cable)

- Stand

- Quick Start Guide

- Power Adapter Standard