Yea-link T42U高清语音3线VoIP POE扬声器电话IP网络对讲系统企业IP电话

Audio Features

* HD voice: HD handset, HD speaker
* Hearing aid compatible (HAC) handset
* Acoustic Shield
* Wideband codec: AMR-WB (optional), Opus, G.722
* Narrowband codec: AMR-NB (optional), Opus, 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

* 12 VoIP accounts
* One-touch speed dial, redial
* Call forward, call waiting, call transfer, call hold
* Call return, group listening, emergency call
* Mute, auto answer, DND, hoteline
* 5-way conference call
* 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)
* Dual USB ports (2.0 compliant):
- Bluetooth earphone through BT40/BT41
- Contact synchronization through BT40/BT41
- Wi-Fi through WF40/WF50
- USB call recording through USB flash drive
- USB headset
- 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
* Centralised call recording
* Visual voice mail
* Call recording

Display and Indicator

* 2.7" 192x64-pixel graphical LCD with backlight
* LED for call and message waiting indication
* Dual-colour (red or green) illuminated LEDs for line status information
* Intuitive user interface with icons and soft keys
* Multilingual user interface
* Caller ID with name and number
* Power saving

Feature keys

* 6 line keys with LED
* 6 line keys can be programmed up to 15 paperless DSS keys (3-page view)
* 5 features keys: message, headset, mute, redial, hands-free speakerphone
* 4 context-sensitive “soft” keys
* 6 navigation keys
* 2 volume control keys
* Illuminated mute key
* Illuminated headset key
* Illuminated hands-free speakerphone key

Interface

* 2 x RJ45 10/100/1000M Ethernet ports
* Power over Ethernet (IEEE 802.3af), Class 2
* 2 x USB port (2.0 compliant)
* 1 x RJ9 (4P4C) handset port
* 1 x RJ9 (4P4C) headset port

Other Physical Features

* Colour: Classic Grey
* Stand with 2 adjustable angles
* Wall mountable
* External Yealink AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
* USB output currency: 5V 500mA
* Power consumption (PSU): 0.9-2.2W
* Power consumption (PoE): 1.3-2.9W
* Dimension (W*D*H*T): 212mm*189mm*175mm*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
* 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
* 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 Content

* Yea-link SIP-T42U IP phone
* Handset with handset cord
* Ethernet Cable (2m CAT5E UTP Cable)
* Stand
* Quick Start Guide
* Power Adapter (Optional)
* Wall Mount Bracket (Optional)