View all products Yealink T28P VoIP phone

Product information

inc. VAT

Yealink SIP-T28P is an executive IP phone designed for power users in office environment.

It is especially designed for maximum productivity and efficiency in every-day business environment.

Using TI chipset and Voice Engine SIP-T28P offers unrivalled superb HD Voice Quality, innovative functional richness, friendly user interface, stylish and elegant design.

It is definitely able to provide a pleasant and satisfactory end-user experience.



Stock availability:- model discontinued by manufacturer
Excluding VATIncluding VAT
Single unit price £103.94£124.73
5+ price£100.88£121.06
10+ price£98.00£117.60

Delivery and availability

Stock availability: - model discontinued by manufacturer.


Network Features

SIP v1(RFC2543), v2(RFC3261)
NAT transverse: STUN mode
IP Assignment: Static/DHCP/PPPoE
In-Band DTMF, Out-of-Band DTMF, SIP Info
Proxy mode and Peer-to-peer SIP link mode
Telnet/HTTP server
DNS client
NAT/DHCP server
Support VLAN, QoS
PoE optional

Voice Features

Wideband Codec: G.722, voice
spectrum between 50-7000Hz
Narrowband Codecs: G.711, G.726,
G.723.1/iLBC, G.729AB and GSM
Full-duplex hands-free speakerphone
-compliant with IEEE 1329
support Hearing Aid Compatible (HAC)


Secure RTP
Digest authentication using MD5/MD5-sess
Secure configuration file via AES encryption

Telephony Features

Call Hold, Call Waiting, Call Transfer, Call Forward
Caller ID, Call List, DND, Redial, Flash
3-way Conference, Speed Dial
Personal Ring Tone, Voicemail
Volume Adjustment, Mute, Speakerphone
Logo Customization, Black List, Phone Lock
Admin/User Configuration Mode
Contact List Export/Import
System Log Export/Import
Hotline, Signal Tone Settable

IP PBX System Integration

SMS, BLF/BLA, Paging, Intercom
Downloadable enterprise phonebook
Call Park, Call Pickup, Distinctive Ringtone
Auto-answer, Dial Plan, Dial-now

Config, Upgrade and Usage

Firmware Upgrade: TFTP/Console/Auto-provision
Auto-provision: TR069 Optional
Direct IP call without SIP proxy
Dial number via SIP server
Dial URL via SIP server

Physical Features

TI Titan Chipset
LCD: White backlit 320x160
4-level grayscales
16 DSS Keys, 4 soft keys
Network Interface: 2xRJ45 10/100M ports
1 headset jack
Expension Module Port
Speaker: 8 Ohm/1 Watt
Dimension: 273 x 204 x 42 mm
Weight: 1.05 kg
Power adapter: Input: AC 100~240V
Output: DC 5V/1A
Operating humidity: 10~95%
Storage temperature: up to 60 C

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Direct Debit
PCI compliant