Yealink SIP-T48U | Настольный телефон

7" 800 x 480-pixel color touch screen, Dual USB ports, USB recording, 2X Gigabit LAN Ports, 16 SIP accounts, Supports EXP43 DSS, Wi-Fi/Bluetooth support, without PSU, PoE

  • 7" 800 x 480-pixel color touch screen with backlight 
  • Opus codec support 
  • Dual USB ports 
  • Dual firmware images 
  • T4U Auto-P template unified 
  • T4U firmware unified 
  • Up to 16 SIP accounts 
  • Dual-port Gigabit Ethernet 
  • PoE support 
  • Paperless label design 
  • Headset, EHS support 
  • Wi-Fi via WF40/WF50 
  • Bluetooth via BT40/BT41 
  • USB recording 
  • Supports color-screen expansion modules 
  • Stand with two adjustable angles 
  • Wall mountable

Display and Indicator:

  • 7" 800 x 480-pixel color touch screen with backlight 
  • 24 bit depth color 
  • LED for call and message waiting indication 
  • Wallpaper 
  • Intuitive user interface with icons and soft keys 
  • Multilingual user interface 
  • Caller ID with name, number and photo 
  • Screensaver 
  • Power saving


  • Dual-port Gigabit Ethernet 
  • Power over Ethernet (IEEE 802.3af), class 3 
  • 2 x USB port (2.0 compliant) 
  • 1 x RJ9 (4P4C) handset port 
  • 1 x RJ9 (4P4C) headset port

Feature keys:

  • 29 one-touch DSS keys 
  • 7 features keys: message, headset, hold, mute, transfer, redial, hands-free speakerphone 
  • 6 navigation keys 
  • Volume control keys 
  • Illuminated mute key 
  • Illuminated headset key 
  • Illuminated hands-free speakerphone key

Audio Features:

  • HD voice: HD handset, HD speaker 
  • Hearing aid compatible (HAC) handset 
  • Acoustic Shield 
  • Smart Noise Filtering 
  • Codecs: AMR-WB (optional), AMR-NB (optional), Opus, G.722, 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 

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 
  • OpenVPN, IEEE802.1X 
  • IPv6 
  • ICE

Phone Features:

  • 16 VoIP accounts 
  • Call hold, mute, DND 
  • One-touch speed dial, hotline 
  • Call forward, call waiting, call transfer 
  • Group listening 
  • Emergency call 
  • Redial, call return, auto answer 
  • 10-way conferencing 
  • Direct IP call without SIP proxy 
  • Ring tone selection/import/delete 
  • Set date time manually or automatically 
  • Dial plan, XML Browser, action URL/URI 
  • RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035) 
  • USB port (2.0 compliant) for: Bluetooth earphone through BT40/BT41, Contact synchronization through BT40/BT41, Simultaneous connection of one headset and one mobile phone through BT40/BT41 ,Wi-Fi through WF40/WF50, USB call recording through USB flash drive, USB headset - Expansion Module EXP43, Wireless Headset Adapter EHS40 
  • USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset: Basic functions: Answer / end, call mute, Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control 
  • Enhanced DSS key


  • 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 
  • Executive and Assistant 
  • Call park, call pickup 
  • Centralized call recording, call recording 
  • Visual voice mail


  • 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

Other Physical Features:

  • Color: Classic Grey 
  • Wall mountable (optional) 
  • External Yealink AC adapter (optional): AC 100~240V input and DC 5V/2A output 
  • USB output currency: 5V 1A 
  • Power consumption (PSU): 1.8-3.8W 
  • Power consumption (PoE): 2.3-4.7W 
  • Dimension (W*D*H*T): 266mm*226mm*185mm*54mm 
  • Operating humidity: 10~95% 
  • Operating temperature: -10~50°C (+14~122°F) 

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