Yealink SIP-T28P IP Phone 6 Line SIP

The Yealink T28P is a top of the range business VoIP phone, featuring high quality telephony features including a 320 x 160 graphic LCD screen with 4-level grayscales, 6 VoIP accounts which are Broadsoft / Avaya/ Asterisk validated, and the TI TITAN chipset.

Yealink T28P Technical Specifications

Phone Features

• 6 VoIP accounts, Hotline, Emergency call
• Call hold, Call waiting, Call forward, Call return
• Call transfer (blind/semi-attended/attended)
• Caller ID display, Redial, Mute, DND
• Auto-answer, 3-way conferencing
• Speed dial, SMS, Voicemail
• Message Waiting Indication (MWI) LED
• Tone scheme, Volume control
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Phonebook (300 entries), Black list
• Call history: dialed/received/missed/forwarded
• Menu-driven user interface
• Localized language and input method
• Soft keys programmable
• Supports up to 6 expansion modules(EXP38 and EXP39)
• Supports Wireless Headset Adapter (EHS36)

Advanced Features

• XML phonebook search/import
• LDAP phonebook
• XML Browser, Hot-desking
• PUSH XML
• Action URL & Active URI

IP PBX System Integration

• Busy lamp field (BLF), BLF list
• Bridged line appearance (BLA)
• DND & Forward synchronization
• Intercom, Paging, Music on hold
• Call park, Call pickup
• Call recording, Call completion
• Group listening, Group pickup
• Anonymous call, Anonymous call rejection
• Network conference
• Distinctive ringtone
• Dial Plan, Dial-now

Codecs and Voice Features

• Wideband codec: G.722
• Narrowband codec: G.711µ/A, G.723.1
• G.726, G.729AB
• VAD, CNG, AEC, PLC, AJB, AGC
• Full-duplex speakerphone with AEC

Network Features

• SIP v1 (RFC2543), v2 (RFC3261)
• IPV6
• DNS SRV (RFC3263)
• Redundant server support
• NAT Traversal: STUN mode
• DTMF: In-Band, RFC2833, SIP Info
• Proxy mode and peer-to-peer SIP link mode
• IP Assignment: Static/DHCP/PPPoE
• Bridge/router mode for PC port
• TFTP/DHCP/PPPoE client
• Telnet/HTTP/HTTPS server
• DNS client, NAT/DHCP server
• Logout