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Yealink SIP-T48U Administrator's Guide

Yealink SIP-T48U
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
103
Permitted
Values
String within 32 characters
Default
var
Parameter
static.security.user_password <y0000000000xx>.cfg
Description
It configures the password.
The phone uses “user” as the default user password, "var" as the default var password and “admin” as
the default administrator password.
The valid value format is <username>:<new password>.
Example:
static.security.user_password = user:123 means setting the password of user to 123.
static.security.user_password = admin:456 means setting the password of administrator to 456.
static.security.user_password = var:789 means setting the password of var to 789.
Note: The phones support ASCII characters 32-126(0x20-0x7E) in passwords. You can set the pass-
word to be empty via the web user interface only.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Security > Password
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Change Password
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Change Password
Note: You cannot change the user password via the phone user interface.
User Access Level Configuration
For more information, refer to Yealink SIP IP Phones Configuration Guide for User Access Level.
The following table lists the parameters you can use to configure the user access level.
Parameter
static.security.var_enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the 3-level access permissions (admin, user, var).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
static.web_item_level.url
[1]
<y0000000000xx>.cfg
Description
It configures the access URL of the file, which defines 3-level access permissions.
Permitted
Values
URL within 511 characters
Default
Blank
Parameter
static.security.default_access_level
[1]
<y0000000000xx>.cfg
Description
It configures the default access level to access the phone user interface.

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Yealink SIP-T48U Specifications

General IconGeneral
Handset typeWired handset
Product typeIP Phone
Product colorGray
USB 2.0 ports quantityUSB 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 supportYes
Ethernet LAN (RJ-45) ports2
Display diagonal7 \
Display resolution800 x 480 pixels
Lines quantity- lines
Phonebook capacity1000 entries
Number of VoIP accounts16
Voice codecsAGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithmsAES, HTTPS, SRTP, TLS
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
Front camera-
AC adapter input voltage100 - 240 V
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Keypad number of keys29
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Width226 mm
Height185 mm

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