Yealink T48U Ultra-elegant Gigabit IP Phone
Το μοντέλο SIP-T48U της Yealink είναι ένα επαγγελματικό IP phone, που υποστηρίζει έως δεκαέξι λογαριασμούς SIP και HD Voice. Διαθέτει έγχρωμη οθόνη αφής LCD 800×480 pixels, δύο Gigabit θύρες με ενσωματωμένο PoE και δύο θύρες USB 2.0. Υποστηρίζει ενσύρματο και ασύρματο Headset και δέχεται expansion module. (Στην τιμή δεν περιλαμβάνεται το PSU)
Yealink T48U Ultra-elegant Gigabit IP Phone
Audio Features
HD voice: HD handset, HD speaker
Hearing aid compatible (HAC) handset
Acoustic Shield
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
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/BT41
– Contact synchronization through BT40/BT41
– Wi-Fi through WF40/WF50
– USB call recording through USB flash drive
– USB headset
– Expansion Module EXP43
– Wireless Headset Adapter EHS40
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
Flexible seating, Executive and Assistant
Call park, call pickup
Centralized call recording, call recording
Visual voice mail
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
2 x USB port (2.0 compliant)
1 x RJ9 (4P4C) handset port
1 x RJ9 (4P4C) headset port
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
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
