Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
132
Default
1
Supported
Devices
W53H, W56H, CP930W
Handset UI
W56H/W53H:
OK > Settings > Audio > Advisory Tones > Low Battery
CP930W:
Menu > Settings > Basic Settings > Sound > Low Battery
Base PIN
To avoid unauthorized registration or access to some features on the handset, you should keep the base PIN
secret.
You can change the base PIN for security.
Topic
Base PIN Configuration
Base PIN Configuration
The following table lists the parameters you can use to configure the base PIN.
Parameter
base.pin_code <y0000000000xx>.cfg
Description
It configures the base PIN.
Permitted
Values
Integer from 0000 to 9999
Default
0000
Web UI
Security > Base PIN > Base Unit PIN
Handset UI
W53H/W56H:
OK > Settings > System Settings > Change Base PIN
DD Phone:
Menu > Settings > Advanced Settings (default password: 0000) > Change Password
CP930W:
Menu > Settings > Advanced Settings (default PIN: 0000) > Change PIN
Phone UI
T57W/T54W:
Menu > DECT Settings > Change Base PIN
T53W/T53:
Menu > Settings > DECT Settings > Change Base PIN
Parameter
base.double_pin_code.enable <y0000000000xx>.cfg
Description
It enables or disables double PIN feature.
Permitted
Values
0-Disabled, users use the PIN configured by "base.pin_code" to register the handset or access some
features.
1-Enabled, users use the PIN configured by "base.pin_code_for_register" to register the handset, and

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