Yealink SIP-T48S

Additional Information

 

The SIP-T48S IP Phone is a dynamic business communications solution for executives and professionals. This phone offers a large touch screen that makes switching between pages and applications swift, easy and convenient. The SIP-T48S is also built with Yealink’s Optima HD Voice technology and wideband codec of Opus for unparalleled audio clarity. Phone users will think they are sitting in the same room with one another. The phone uses Gigabit Ethernet technology for rapid call handling. Plus, it works in conjunction with Bluetooth USB Dongle and Wi-Fi USB Dongle. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.

Technical Specs

Audio Features

  • HD voice: HD handset, HD speaker
  • Hearing aid compatible (HAC) handset
  • 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
  • VAD, CNG, AEC, PLC, AJB, AGC

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

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
  • 3-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, Contact synchronization through BT40, Wi-Fi through WF40, USB call recording through USB flash drive
  • Enhanced DSS Key

IP-PBX Features

  • Busy Lamp Field (BLF)
  • Bridged Line Appearance(BLA)
  • Anonymous call, anonymous call rejection
  • Hot-desking, voice mail
  • Message Waiting Indicator (MWI)
  • Call park, call pickup
  • Call recording
  • Flexible seating
  • Executive and Assistant
  • Centralized call recording
  • Visual Voice Mail

Directory

  • Local phonebook up to 1000 entries
  • Blacklist
  • XML/LDAP remote phonebook
  • Smart dialing
  • Phonebook search/import/export
  • Call history: dialed/received/missed/forwarded

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

Interface

  • Dual-port Gigabit Ethernet
  • Power over Ethernet (IEEE 802.3af), class 3
  • 1 x USB port (2.0 compliant)
  • 1 x RJ9 (4P4C) handset port
  • 1 x RJ9 (4P4C) headset port
  • 1 x RJ12 (6P6C) EXT port: Supports up to 6 Expansion Modules for an attendant console application

Management

  • Configuration: browser/phone/auto provision
  • Auto-provision via FTP/TFTP/HTTP/HTTPS for mass deployment
  • Auto-provision with PnP
  • Broadsoft device management
  • 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/PPPoE
  • 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 the configuration file
  • Digest authentication
  • OpenVPN, IEEE802.1X
  • IPv6, LLDP/CDP/DHCP VLAN, ICE

Other Physical Features

  • Color: Classic Grey
  • Wall mountable (optional)
  • External Yealink AC adapter (optional): AC 100~240V input and DC 5V/2A output
  • mA output
  • Power consumption (PSU): 2.2-4.9W
  • Power consumption (PoE): 3.2-7.5W
  • Dimension (W*D*H*T): 266mm*226mm*185mm*54mm
  • Operating humidity: 10~95%
  • Operating temperature: -10~50°C (+14~122°F)

Included In The Box

  • Yealink SIP-T48S IP phone
  • Handset with handset cord
  • Ethernet Cable
  • Stand
  • Quick Start Guide

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