Yealink SIP-T48U Administrator's Guide

Call Features
384
Default
Blank
Web UI
Account > Basic > Send Anonymous Rejection Code > On Code
Phone UI
Menu > Features > Anonymous Call > Send Rejection Code > On Code
Parameter
account.X.send_anonymous_rejection_code
[1]
<MAC>.cfg
Description
It configures the IP phone to send anonymous call rejection on/off code to activate/deactivate the
server-side anonymous call rejection feature for account X.
Permitted
Values
0-Off Code, the phone will send anonymous rejection off code to the server when you deactivate the
anonymous call rejection feature.
1-On Code, the phone will send anonymous rejection on code to the server when you activate the
anonymous call rejection feature.
Default
0
Web UI
Account > Basic > Send Anonymous Rejection Code
Phone UI
Menu > Features > Anonymous Call > Send Rejection Code
Parameter
account.X.anonymous_reject_offcode
[1]
<MAC>.cfg
Description
It configures the anonymous call rejection off code.
The phone will send the code to deactivate anonymous call rejection feature on server-side when you
deactivate it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Rejection Code > Off Code
Phone UI
Menu > Features > Anonymous Call > Send Rejection Code > 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 Waiting
Call waiting enables you to receive another call when there is already an active call on your phone. If it is disabled,
the new incoming call will be rejected automatically.
You can enable call waiting feature and set the phone to play a warning tone to avoid missing important calls dur-
ing a call.
Yealink phones also support call waiting on code and off code to activate and deactivate server-side call waiting
feature. They may vary on different servers.
Topic
Call Waiting Configuration
Call Waiting Configuration
The following table lists the parameters you can use to configure call waiting.
Parameter
call_waiting.enable <y0000000000xx>.cfg

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