Yealink SIP-T28P

Yealink SIP-T28P

Business IP Phone is designed for demanding users for use in the office. Yealink SIP-T28P  created specifically for maximum productivity and efficiency in the everyday business environment. Using the TI chipset and an excellent HD voice (Voice Engine) SIP-T28P offers HD audio quality . With innovative features, user-friendly interface, stylish and elegant look T28P is definitely in a position to provide a pleasant and satisfactory use.


Yealink SIP-T28P  SIP IP Phone

Yealink HD sound quality 

It supports advanced wideband audio codec G.722 and  speakerphone with AEC standards, thus ensuring greater clarity and sound quality.

Phone for business solutions

Equipped with 16 programmable buttons with stub functions with LED, 4 soft keys, allows the use of BLF, phone book in XML format, which significantly increases the efficiency of the device.

Network Features

  • SIPv1 (RFC2543), v2 (RFC3261)
  • 6 VoIP user accounts
  • NAT Transverse: STUN mode, IP Address: Static / DHCP / PPPoE
  • In-Band DTMF Out-of-Band DTMF SIP Info Proxy mode and peer-to-peer SIP link mode
  • TFTP client / DHCP / PPPoE Server Telnet / HTTP, DNS Client, Server NAT / DHCP, VLAN, QoS
  • Support for PoE

Voice Features

  • Wideband codec: G.722, frequency response: 50-7000Hz
  • Narrowband codecs: G.711, G.726, G.723.1 / iLBC, GSM G.729ab and
  • Mode full-duplex speakerphone with AEC

Phone Features

  • Call hold, call waiting
  • Switching and call forwarding, caller identification
  • List of calls (up to 100 connections), do not disturb, Redial
  • Flash, speed dial, 3-way conference, voicemail, custom ringtones (MP3)
  • Voicemail, volume control, mute the microphone, speaker (speakerphone)
  • the ability to change the logo, import / export address book, import / export system log, hotline, the choice of the signal line, Polish menu
  • Address Book on more than 300 entries, support for up to 6 modules secretarial EXP38

Integration IPPBX

  • SMS, BLF (Busy Lamp Field) / BLA (Bridged Line Appearance)
  • Dial Plan, Dial-now, Paging
  • Remote / Local Address Book XML
  • Call Park, Call takeover
  • Auto answer, intercom

Configuration, use

  • Firmware update: TFTP / console / Auto-provisioning
  • Auto-provisioning: TR069 option
  • Direct call without SIP proxy dialing SIP server
  • Selecting the SIP server URL


  • SRTP (RFC3711)
  • Transport Layer Security (TLS)
  • VLAN (802.1 pq), QoS
  • Phone lock by the user (keyboard)
  • Panek Configuration Admin / user
  • Secure RTP authentication using MD5 / MD5-sess
  • Encryption configuration using the AES algorithm
  • HTTPS (server / client)


  • TI Titan chipset
  • LCD: 320 × 160 with white backlight 4 shades of gray
  • 48 keys including 16 programmable
  • 1 x RJ9 headset to connect
  • 1 x RJ9 to connect wired headphones
  • 1 x RJ12 for connecting the module EXP38
  • Speaker 8 Ohm / 1Watt
  • Network card: 2xRJ45 10 / 100Mb
  • Dimensions: 273 x 204 x 42mm
  • Net weight 1.05 kg
  • Power supply: 100 ~ 240V
  • Power supply: DC 5V / 1A
  • Power over Ethernet (IEEE 802.3af)
  • Relative Humidity: 10 ~ 95%