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Product Specification
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Overview
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Yealink SIP-T48G โทรศัพท์แบบ IP (IP-Phone) หน้าจอขนาด 7 นิ้ว 800 x 480-pixel Color Touch Screen รองรับ 16 คู่สาย, 16 SIP Account รองรับ Wifi และ Bluetooth 2 Port Gigabit รองรับ POE มาตรฐาน 802.3af (ไม่มี Adapter ในชุดอุปกรณ์)
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Audio Features
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HD voice: HD handset, HD speaker
Wideband codec: G.722
Narrowband codec: G.711(A/?), 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
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Phone Features
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16 VoIP accounts
Call hold, mute, DND
One-touch speed dial, hotline
Call forward, call waiting, call transfer
Group listening, SMS, 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
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Directory
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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
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IP-PBX Features
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Busy Lamp Field (BLF)
Bridged Line Apperance (BLA)
Anonymous call, anonymous call rejection
Hot-desking, voice mail, flexible seating
Call park, call pickup
Executive and Assistant
Centralized call recording
Visual voice mail
Call recording
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Display and Indicator
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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
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Feature keys
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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
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Interface
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Dual-port Gigabit Ethernet
Power over Ethernet (IEEE 802.3af), class 0
1 x USB port (2.0 compliant)
1xRJ9 (4P4C) handset port
1xRJ9 (4P4C) headset port
1XRJ12 (6P6C) EXT port:
Supports up to 6 Expansion Modules for an attendant console application
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Other Physical Features
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Stand with 2 adjustable angles
Wall mountable
External Yealink AC adapter (optional):AC 100~240V input and DC 5V/1.2A output
Power consumption (PSU): 1.1-2.3W
Power consumption (PoE): 1.7-3.2W
Dimension(W*D*H*T):
466mm*226mm*185mm*54mm
Operating humidity: 10~95%
Operating temperature: -10~50?C (+14~122?F)
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Management
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Configuration: browser/phone/auto-provision
Auto provision via FTP/TFTP/HTTP/HTTPS
for mass deploy
Auto-provision with PnP
Zero-sp-touch, TR-069
Reset to factory, reboot
Package tracing export, system log
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Package Features
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Yealink SIP-T48G IP phone
Handset with handset cord
Ethernet Cable (2m CAT5E UTP Cable)
Stand
Quick Start Guide
Power Adapter (Optional)
Wall Mount Bracket (Optional)
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Network and Security
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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 using MD5/MD5-sess
OpenVPN, IEEE802.1X
IPv6
LLDP/CDP/DHCP VLAN
ICE
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