Yealink T28P

The Yealink SIP-T28P is a POE enabled advanced IP phone featuring 6 SIP lines and HD voice hardware and software support.

The Yealink T28P represents the next generation of VoIP phones which are designed for the business user who needs rich telephony features, friendly UI and super voice quality. The T28P is equipped with the TI TITAN chipset, offers high definition voice quality through TI voice engine, HD handset, HD speaker and HD codec (G.722). With a large, high-resolution graphical display and 48 keys, the T28P offers an excellent user experience to configure, make calls, express XML browser, etc. Moreover, to avoid problems with unwanted violations of your audio data, the Yealink T28P supports the security standards TLS, SRTP, HTTPS, 802.1x, Open VPN and AES encryption which are necessary to protect against electronic eavesdropping and data theft.

Features

  • TI TITAN chipset and TI voice engine
  • 320x160 graphic LCD with 4-level grayscales
  • 6 VoIP accounts, Broadsoft /Avaya/Asterisk validated
  • HD Voice: HD Codec, HD Handset, HD Speaker
  • 48 keys including 16 programmable keys
  • BLF/BLA, SMS, Voicemail, Intercom
  • Localized language, XML phonebook
  • FTP/TFTP/HTTP, PnP Auto-provision
  • SRTP/HTTPS/TLS, VLAN, QoS
  • PoE, Headset, 2xRJ45, Expansion module

Specification

Phone Features
  • 6 VoIP accounts, hotline, emergency call
  • Call waiting, call transfer, call forward
  • Hold, mute, flash, auto-answer, redial
  • 3-way conference, DND, speed dial
  • XML Phonebook search/import/export
  • Black list, call history (100 entries)
  • Volume adjustment, ring tone selection
  • Tone scheme, System log
  • Multi-language (more than 20)
  • Supports up to 6 expansion modules
  • IP PBX System Integration
  • Dial plan, dial-now
  • SMS, Voicemail, MWI
  • BLF/BLA, intercom, paging
  • Call park, call pickup
  • Distinctive ringtone

IP PBX System Integration
  • Music on hold
  • Call park, Call pickup
  • Dial plan, Dial now
  • Voicemail
  • Message Waiting Indication (MWI)
  • Distinctive ringtone

Voice Features
  • Wideband codec: G.722
  • Narrowband codec: G.711u/A, G.726, G.729AB, G.723.1
  • VAD, CNG, PLC, AJB, AGC

Network Features
  • SIP v1 (RFC2543), v2 (RFC3261)
  • NAT Traversal: STUN mode
  • DTMF: In-band, out-of band (RFC2833) and SIP INFO
  • Proxy mode and peer-to-peer SIP link mode
  • IP Assignment: Static/DHCP
  • TFTP/DHCP client
  • Telnet/HTTP server
  • DNS client
  • NAT/DHCP server

Management
  • FTP/TFTP/HTTP/PnP auto-provision
  • Configuration: browser/phone/auto-provision/IVR
  • Direct IP call without SIP proxy
  • Dial number via SIP server
  • Dial URL via SIP server

Security
  • HTTPS (server/client)
  • SRTP (RFC3711)
  • Transport Layer Security (TLS)
  • VLAN (802.1 pq), QoS
  • Digest authentication using MD5/MD5-sess
  • Secure configuration file via AES encryption
  • Phone lock for personal privacy protection
  • Admin/user configuration mode

Physical Features
  • TI TITAN chipset
  • 320x160 graphic LCD with 4-level grayscales
  • 48 keys including 16 programmable keys
  • 1xRJ9 (4P4C) handset port
  • 1xRJ9 (4P4C) headset port
  • 2xRJ45 10/100M Ethernet ports
  • 1XRJ12 (6P6C) expansion module port
  • Power adapter: AC 100~240V input and DC 5V/1.2A output
  • Power over Ethernet (IEEE 802.3af)
  • Power consumption: 1.6-2.6W
  • Net weight: 1.05KG
  • Dimension: 273x204x42MM
  • Operating humidity: 10~95%
  • Storage temperature: up to 60°C