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Black desk phone with large greyscale LCD and 48 keys

Yealink Network Technology Co., Ltd

Yealink Network Technology Co., Ltd YEA-SIP-T28P voip

SKU CH-52VR-JSP38 MPN YEA-SIP-T28P

Executive VoIP phone with 320x160 graphical LCD, 48 keys including 16 programmable keys, dual 10/100 Ethernet ports, PoE support and up to 6 SIP accounts

  • TypeWired VoIP
  • SecurityHTTPS (server/client) SRTP (RFC3711) Transport Layer Securit
  • Ports1xRJ9 (4P4C) handset port, 1xRJ9 (4P4C) headset port, 2xRJ45
  • Display320x160 graphic LCD with 4-level grayscales
  • PowerPower adapter: AC 100~240V input and DC 5V/1.2A output
  • FeaturesTI TITAN chipset and TI voice engine 6 VoIP accounts, Broads
  • HD voice clarity with wideband codec and handset
  • 320x160 graphical LCD with 4-level grayscales for menus
  • Dual 10/100 Ethernet ports with PoE support
  • Six SIP accounts for multi-line call handling
  • TLS, SRTP and AES encryption protect voice data

Executive IP Phone with PoE

The Yealink SIP-T28P is a wired VoIP handset built for business users who need up to six SIP accounts and a 320x160 graphical LCD. It ships new with a TI TITAN chipset, HD Voice codecs and 48 keys including 16 programmable buttons. The two 10/100M Ethernet ports and PoE support simplify desk deployment.

Check ports and power before ordering

Verify that your network infrastructure provides 10/100M switching and PoE 802.1 capability or plan to use the included 5V/1.2A adapter. The handset and headset each require a 4P4C RJ9 jack while expansion modules use a 6P6C RJ12 port. Security features such as TLS, SRTP, HTTPS and AES encryption need compatible server configuration.

Sustained call handling

Under continuous use the TI voice engine maintains HD audio quality across multiple concurrent lines without degradation. The grayscale LCD remains legible during long sessions and the phone lock protects privacy when the desk is unattended. Secure provisioning via AES-encrypted configuration files keeps settings consistent over extended deployments.

Highlights

  • HD voice clarity with wideband codec and handset
  • 320x160 graphical LCD with 4-level grayscales for menus
  • Dual 10/100 Ethernet ports with PoE support
  • Six SIP accounts for multi-line call handling
  • TLS, SRTP and AES encryption protect voice data

Specifications

BrandYealink
ModelSIP-T28P
TypeWired VoIP
SecurityHTTPS (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
Ports1xRJ9 (4P4C) handset port, 1xRJ9 (4P4C) headset port, 2xRJ45 10/100M Ethernet ports, 1xRJ12 (6P6C) expansion module port
Display320x160 graphic LCD with 4-level grayscales
PowerPower adapter: AC 100~240V input and DC 5V/1.2A output
FeaturesTI TITAN chipset and TI voice engine
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
Power over Ethernet (IEEE 802.3af)
Codecs and Voice Features:
Wideband codec: G.722
Narrowband codec: G.711, G.723.1, G.726, G.729AB
VAD, CNG, AEC, PLC, AJB, AGC
Full-duplex speakerphone with AEC
Shipping weight1.36 kg
Package size279 × 254 × 127 mm

Questions about this item

Does the Yealink SIP-T28P come with a power adapter or do I need to buy one separately?

The SIP-T28P includes a power adapter rated AC 100~240V input and DC 5V/1.2A output. It also supports Power over Ethernet through its two 10/100M RJ45 ports, so a separate adapter is only needed if PoE is unavailable.

Should I choose the SIP-T28P for a setup needing more than six SIP accounts?

This model supports up to 6 VoIP accounts. If your deployment requires more than six simultaneous registrations, you would need a different Yealink model with a higher account limit.

What does the 320x160 graphical LCD resolution mean for daily use on the SIP-T28P?

The 320 by 160 pixel display with 4-level grayscale provides clear text for caller ID, menus and XML browser pages, while the 48 physical keys — including 16 programmable ones — give direct access to BLF, voicemail and intercom functions without scrolling.

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