Yealink SIP-T48U Administrator's Guide

Call Features
372
T19(P) E2/CP920 phones; handset and Speakerphone key are not applicable to CP920 phones; the
off-hook key is only applicable to CP920 phones.
Permitted
Values
String within 1024 characters
Default
Blank
[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.
Live Dialpad
Live Dialpad allows the phones to automatically dial out the entered phone number without pressing the send key
after a designated period of time.
Topic
Live Dialpad Configuration
Live Dialpad Configuration
The following table lists the parameters you can use to configure live dialpad.
Parameter
phone_setting.predial_autodial <y0000000000xx>.cfg
Description
It enables or disables the live dialpad feature.
Permitted
Values
0-Disabled
1-Enabled, the phone will automatically dial out the entered phone number on the pre-dialing screen
without pressing a send key.
Default
0
Web UI
Settings > Preference > Live Dialpad
Parameter
phone_setting.inter_digit_time <y0000000000xx>.cfg
Description
It configures the delay time (in seconds) for the phone to automatically dial out the entered phone
number without pressing a send key.
Note: It works only if “phone_setting.predial_autodial” is set to 1 (Enabled).
Permitted
Values
Integer from 1 to 14
Default
4
Web UI
Settings > Preference > Inter Digit Time (1~14s)
Auto Redial
You can set the phone automatically redial the last dialed number when the callee is temporarily unavailable. Both
the number of attempts and waiting time between redials are configurable.
Topic
Auto Redial Configuration
Auto Redial Configuration
The following table lists the parameters you can use to configure auto redial.

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