Yealink SIP-T48G 16-Line Ultra-Elegant Gigabit IP Phone (SIP-T48G) Refurb

Condition: Refurbished

Yealink SIP-T48G 16-Line Ultra-Elegant Gigabit IP Phone (SIP-T48G)

Summary

Revolutionarily new design

As Yealink 's SIP Phones continue to evolve, the SIP-T48G has been designed by pursuing ease of use with a scratch-resistant 7 inch touch screen, the T4 Series' signature metallic texture, 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 maximize acoustic performance. Coupled with advanced acoustic clarity technology such as full duplex, echo cancellation, and an adaptive jitter buffer, the SIP-T48G creates an amazing face-to-face experience.

A rich visual experience for applications

The SIP-T48G supports vast productivity-enhancing features such as a XML Browser, call forwarding, call transfer, 3-way conferencing, and support for a vast number of UC platforms for a superior UC experience. The 7" 800 x 480-pixel color touch screen with backlight enables rich visual presentation and easier menu navigation.

Advanced connectivity

For network connectivity, the SIP-T48G comes with two Gigabit Ethernet ports, one of them suitable for Power over Ethernet. The SIP- T48G also includes a built-in USB port, which supports Bluetooth headsets with the Yealink BT40.

Highly secure transport and interoperability

The SIP-T48G uses SIP over Transport Layer Security (TLS/SSL) to provide service providers with the latest technology for enhanced network security. The range is certified compatible with 3CX, Asterisk, and BroadSoft.

Yealink SIP-T48G Core Features

• Revolutionarily new design
• Optima HD voice: combination of wideband technology (G.722) and best-in-class system design
• 7" 800 x 480-pixel color touch screen with backlight
• Dual-port Gigabit Ethernet , integrated Power over Ethernet (PoE) support
• Up to 6 SIP accounts
• Supports Bluetooth headset through USB Dongle
• 29 one-touch DSS keys
• Wired/Wireless headset
• Supports expansion modules
• Wall mountable
• Simple, flexible and secure provisioning options

Yealink SIP-T48G Technical Specifications

Audio Features

• HD voice: HD handset, HD speaker
• Codecs: 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

IP-PBX Features

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

Phone Features

• 6 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

Directory

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

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
• National language selection
• Caller ID with name, number and photo

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
• Built-in a USB port, support Bluetooth headset (Through USB Dongle)
• 1xRJ9 (4P4C) handset port
• 1xRJ9 (4P4C) headset port
• 1XRJ12 (6P6C) EXT port: Supports up to 6 Expansion Modules for an attendant console application

Other Physical Features

• Wall mountable (optional)
• External universal AC adapter (optional): AC 100~240V input and DC 5V/2A output
• Power consumption (PSU): 2.0-6.4W
• Power consumption (PoE): 2.4-10.5W
• Dimension (W*D*H*T): 266mm*226mm*185mm*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 deployment
• Auto-provision with PnP
• 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 transverse: 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 configuration file
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X
• IPv6