Yealink SIP-T48U Administrator's Guide

Security Features
102
Security Features
This chapter provides information about configuring the security features for the phone.
Topics
User and Administrator Identification
Auto Logout Time
Phone Lock
Transport Layer Security (TLS)
Secure Real-Time Transport Protocol (SRTP)
Encrypting and Decrypting Files
Incoming Network Signaling Validation
USB Port Lock
User and Administrator Identification
By default, some menu options are protected by privilege levels: user and administrator, each with its own pass-
word. You can also customize the access permission for the configurations on the web user interface and phone
user interface. Yealink phones support the access levels of admin, var, and user.
When logging into the web user interface or access advanced settings on the phone, as an administrator, you need
an administrator password to access various menu options. The default username and password for administrator
is “admin”. Both you and the user can log into the web user interface, and you will see all of the user options. The
default username and password for the user is “user”.
For security reasons, you should change the default user or administrator password as soon as possible. Since
advanced menu options are strictly used by the administrator, users can configure them only if they have admin-
istrator privileges.
Topics
User and Administrator Identification Configuration
User Access Level Configuration
User and Administrator Identification Configuration
The following table lists the parameters you can use to configure the user and administrator identification.
Parameter
static.security.user_name.user <y0000000000xx>.cfg
Description
It configures the user name for the user to access the phone's web user interface.
Permitted
Values
String within 32 characters
Default
user
Parameter
static.security.user_name.admin <y0000000000xx>.cfg
Description
It configures the user name for the administrator to access the phone's web user interface.
Permitted
Values
String within 32 characters
Default
admin
Parameter
static.security.user_name.var <y0000000000xx>.cfg
Description
It configures the user name for the var to access the phone's web user interface.
Note: It works only if “static.security.var_enable” is set to 1 (Enabled).

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