Yealink SIP- T28P User Manual

About This Guide
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Thank you for choosing the SIP-T28P IP phone, exquisitely designed to provide business
telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Multicast Paging
and Conference over an IP network.
This guide provides everything you need to quickly use your new phone. First, verify
with your system administrator that the IP network is ready for phone configuration. Also
be sure to read the Packaging Contents and Regulatory Notices sections in this guide
before you set up and use the SIP-T28P IP phone.
Note
Topics provided in this guide include:
 Chapter 1 Overview
 Chapter 2 Getting Started
 Chapter 3 Customizing Your Phone
 Chapter 4 Basic Call Features
 Chapter 5 Advanced Phone Features
This section describes the changes to this guide for each release and guide version.
The following section is new:
 Optional Accessor on page 10
Major updates have occurred to the following sections:
 DSS Keys on page 53
 Appendix A - Time Zones on page 147
Shared Line, Network Directory and Network Call Log features are hidden for IP phones
in neutral firmware version, which are designed for the BroadWorks environment. Please
contact your system administrator for more information.

Yealink SIP- T28P Specifications

General

Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Keypad number of keys	48
Voice codecs	G.711, G.722, G.723.1, G.726
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Touchscreen	-
Display resolution	320 x 160 pixels
Lines quantity	- lines
Phonebook capacity	- entries
Number of VoIP accounts	6
Bluetooth	No
Security algorithms	HTTPS, SSL/TLS
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
Power consumption (typical)	2.6 W
Operating relative humidity (H-H)	10 - 95 %
Compliance industry standards	IEEE 802.3af
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	204 mm
Width	273 mm
Height	42 mm
Weight	1050 g