Yealink SIP-T48U Administrator's Guide

Phone Customization
249
Web UI
Features > Power LED > Mute Power Light Flash
Parameter
phone_setting.hold_and_held_power_led_flash_
enable
<y0000000000xx>.cfg
Description
It enables or disables the power LED indicator to flash when a call is placed on hold or is held.
Permitted
Values
0-Disabled (power LED indicator does not flash)
1-Enabled ( power LED indicator fast flashes (0.5s) red)
For T19(P) E2 phones:
0-Disabled (power LED indicator does not flash)
1-Enabled ( power LED indicator fast flashes (0.5s) yellow)
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > Power LED > Hold/Held Power Light Flash
Parameter
phone_setting.talk_and_dial_power_led_enable <y0000000000xx>.cfg
Description
It enables or disables the power LED indicator to be turned on when the phone is busy.
Permitted
Values
0-Disabled (power LED indicator is off)
1-Enabled (power LED indicator glows red)
For T19(P) E2 phones:
0-Disabled (power LED indicator is off)
1-Enabled (power LED indicator glows yellow)
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > Power LED > Talk/Dial Power Light On
Parameter
phone_setting.missed_call_power_led_flash.en-
able
<y0000000000xx>.cfg
Description
It enables or disables the power LED indicator to flash when the phone misses a call.
Permitted
Values
0-Disabled (power LED indicator does not flash)
1-Enabled (power LED indicator slowly flashes (1s) red)
For T19(P) E2 phones:
0-Disabled (power LED indicator does not flash)
1-Enabled (power LED indicator slowly flashes (1s) yellow)
Default
1
Supported
Devices
All phones except CP920
Web UI
Features > Power LED > MissCall Power Light Flash
Parameter
phone_setting.autop_led_flash_enable <y0000000000xx>.cfg

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