Yealink SIP-T40G Corporate IP Telephone Set

Audio Features
> HD voice: HD handset, HD speaker
> Wideband codec: Opus, G.722
> Narrowband codec: G.711(A/μ), G.729AB, G.726
> 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
> 3 VoIP accounts
> One-touch speed dial, redial
> Call forward, call waiting
> Call transfer, call hold
> Call return, group listening, SMS
> Mute, auto answer, DND
> 3-way conference call
> Direct IP call without SIP proxy
> Ringtone selection/import/delete
> Hotline, emergency call
> Set date & time manually or automatically
> Dial Plan
> XML Browser
> Action URL/URI
> RTCP-XR (RFC3611􀀊, VQ-RTCPXR􀀁􀀉RFC6035􀀊
> Enhanced DSS Key

Directory
> Local phonebook up to 1000 entries
> Blacklist
> 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 Appearance(BLA)
> Anonymous call, anonymous call rejection
> Hot-desking, voice mail
> Message Waiting Indicator (MWI)
> Call park, call pickup
> Intercom, paging, music on hold
> Call recording
> Flexible seating
> Executive and Assistant
> Centralized call recording
> Visual Voice Mail

Display and Indicator
> 2.3″ 132×64-pixel graphical LCD with backlight
> LED for call and message waiting for indication
> Dual-color (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
> 3 line keys with LED
> 5 features keys: message, headset, mute, redial, hands-free speakerphone
> 4 context-sensitive “soft” keys
> 6 navigation keys
> 2 volume control keys
> Mute key
> Headset key
> Hands-free speakerphone key

Interface
> Dual-port Gigabit Ethernet
> 1 x RJ9 (4P4C) handset port
> 1 x RJ9 (4P4C) headset port
> 1 x RJ12 (6P6C) EHS port
> Power over Ethernet (IEEE 802.3af), Class 2