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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
377
Phone UI
Menu > Features > Anonymous Call > Send Anonymous Code (Send Anony Code)
Parameter
account.X.anonymous_call.server_base_only
[1]
<MAC>.cfg
Description
It enables or disables the phone to perform the anonymous call feature on server-side only.
Note: You need to configure parameters “account.X.anonymous_call_oncode” and “accoun-
t.X.anonymous_call_offcode to activate and deactivate the server-side anonymous call feature.
Permitted
Values
0-Disabled, the phone will perform the anonymous call feature on server-side and locally. If the
anonymous call feature is enabled on the phone, the phone will carry the Anonymous attribute in the
From header of the INVITE message.
1-Enabled, the phone will perform the anonymous call feature on server-side only. The phone will not
carry the Anonymous attribute in the From header of the INVITE message even if the anonymous call
feature is enabled on the phone.
Default
Blank
Parameter
account.X.anonymous_call_oncode
[1]
<MAC>.cfg
Description
It configures the anonymous call on code.
The phone will send the code to activate the anonymous call feature on server-side when you activate
it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > On Code
Phone UI
Menu > Features > Anonymous Call > On Code
Parameter
account.X.anonymous_call_offcode
[1]
<MAC>.cfg
Description
It configures the anonymous call off code.
The phone will send the code to deactivate the anonymous call feature on server-side when you deac-
tivate it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > Off Code
Phone UI
Menu > Features > Anonymous Call > Off Code
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Call Number Filter
Call number filter feature allows IP phone to filter designated characters automatically when dialing.
Topic
Call Number Filter Configuration
Call Number Filter Configuration
The following table lists the parameter you can use to configure call number filter.

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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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