Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
290
Supported
Devices
T57W, T54W, T48U, T48S, T46U, T46S
Parameter
phone_setting.icon.delete
[1]
<y0000000000xx>.cfg
Description
It deletes all custom icons.
Permitted
Values
http://localhost/all
Default
Blank
Supported
Devices
T57W, T54W, T48U, T48S, T46U, T46S
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Warnings Display
When one of the following situations occurs:
l The default password is being used
l Account registration failed
l Provisioning credentials are wrong
l Network is unavailable
l Line on redundancy registration
On the T42S/T42U/T41S phones, a warning message appears on the idle screen.
On the other phones, a warning icon appears in the status bar.
Topic
Warnings Display Configuration
Warnings Display Configuration
The following table lists the parameter you can use to configure the warnings display.
Parameter
phone_setting.warnings_display.mode <y0000000000xx>.cfg
Description
It enables or disables the phone to display warnings.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except T48G, T46G, T42G, T41P and T29G
Out of Service
When the network of the phone is disconnected and the warning message appears on the screen, the phone will
play an alert tone.
Topic
Out of Service Configuration
Out of Service Configuration
The following table lists the parameter you can use to configure out of service.

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm