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Yealink SIP-T48U Administrator's Guide

Yealink SIP-T48U
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Call Features
398
Default
1
Parameter
features.fwd_mode <y0000000000xx>.cfg
Description
It configures the call forward mode.
Note: It works only if “features.fwd.allow is set to 1 (Enabled).
Permitted
Values
0-Phone, call forward feature is effective on a phone basis.
1-Custom, you can configure call forward feature on a per-line basis.
Default
0
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Features > Forward&DND > Forward > Mode
Parameter
features.forward.emergency.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to receive the call from authorized numbers when the call forward fea-
ture is activated.
Note: It works only if “features.fwd.allow” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, the call from authorized numbers will not be forwarded when the call forward feature is
activated.
Default
0
Web UI
Features > Forward&DND > Forward > Forward Emergency
Parameter
features.forward.emergency.authorized_number <y0000000000xx>.cfg
Description
It configures the authorized numbers.
The call from the authorized numbers cannot be forwarded even if the call forward feature is activated.
Multiple numbers are separated by commas.
Note: It works only if “features.fwd.allow and “features.forward.emergency.enable” are set to 1
(Enabled).
Permitted
Values
String within 511 characters
Default
Blank
Web UI
Features > Forward&DND > Forward > Forward Authorized Numbers
Parameter
forward.international.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to forward incoming calls to international numbers (the prefix is 00).
Note: It works only if “features.fwd.allow is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Features > General Information > Fwd International
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > FWD International > FWD International
Black-and-white Screen Phones:

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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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