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.729, G.729A,
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
Phone Features
> 16 VoIP accounts
> Call hold, mute, DND, redial, call return, auto answer
> One-touch speed dial, hotline
> Call forward, call waiting, call transfer
> Group listening, emergency call, 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/BT41,
– Contact synchronization through BT40/BT41,
– Wi-Fi through WF40/WF50,
– USB call recording through USB flash drive
> USB connectivity to Yealink UH36 headset:
– Basic functions: Answer / end, call mute
– Enhanced function: audio optimization, redial, call
hold, volume synchronization, multiple calls
> Enhanced DSS key
Directory
> 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, call park, call pickup
> Flexible seating, Executive and Assistant
> Centralized call recording
> Visual voice mail
> Call recording
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
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
Other Physical Features
> Color: Classic Grey
> Wall mountable (optional)
> External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/2A 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)
Management
> 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
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 configuration file
> Digest authentication
> OpenVPN, IEEE802.1X
> IPv6
> LLDP/CDP/DHCP VLAN
> ICE
Package Features
> Package content:
– Yealink SIP-T48S IP phone
– Handset with handset cord
– Ethernet Cable (2m CAT5E FTP Cable)
– Stand
– Quick Start Guide
– Power Adapter (Optional)
– Wall Mount Bracket (Optional)
> Qty/CTN: 5 PCS
> N.W/CTN: 8.2 kg
> G.W/CTN: 9.0 kg
> Giftbox size: 324mm*263mm*128mm
> Carton Meas: 660mm*338mm*273mm