Yealink SIP-T27G Administrator's Guide

Table of Contents
7
Contrast
197
Contrast Configuration
197
Wallpaper
198
Wallpaper Configuration
198
Wallpaper Customization
199
Custom Wallpaper Picture Limit
200
Custom Wallpaper Configuration
200
Deleting a Custom Picture
200
Adding a Wallpaper from a USB Flash Drive
200
Example: Setting a Custom Picture as Wallpaper
201
Transparency
201
Transparency Configuration
201
Screen Saver
202
Screensaver Display Customization
202
Screensaver File Elements and Attributes
203
Customizing the Screen Saver File
203
Custom Screensaver Picture Limit
204
Screensaver Configuration
204
Adding a Screensaver Picture from a USB Flash Drive
207
Deleting a Screensaver Picture
207
Backlight
207
Supported Backlight Options
208
Backlight and Time Configuration
208
Label Length for Line Key Display
209
Label Length Display Configuration
210
Label Alignment for Line/Ext Key Display
211
Label Alignment Display Configuration
211
Page Switch Key
212
Page Switch Key Configuration
212
Page Tips
212
Phone Page Tips
212
Phone Page Tips Indicator
212
Phone Page Tips Configuration
213
Expansion Module Page Tips
213
Expansion Module Page Tips Indicator
214
Expansion Module Page Tips Configuration
214
Time and Date
214
Time Zone
215
NTP Settings
218
NTP Configuration
218
DST Settings
220
Auto DST File Attributes
220
Customizing Auto DST File
221
DST Configuration
222
Time and Date Manually Configuration
223

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm