Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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When the phone receives an incoming call in the call state, the screen does not prompt the incoming call inform-
ation. You can perform other features on the current call. You can only answer the incoming call after ending the cur-
rent call.
Topic
Ignoring Incoming Calls Configuration
Ignoring Incoming Calls Configuration
The following table lists the parameter you can use to configure ignoring incoming calls.
Parameter
features.ignore_incoming_call.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to ignore the incoming call.
Permitted
Values
0-Disabled
1-Enabled, the incoming call is still in the progress and is not rejected, the user can choose to answer
it or not, or perform other features.
Default
0
Off Hook Answering
You can set whether to answer an incoming call by picking up the handset, pressing the Speakerphone key or
pressing the HEADSET key directly.
It is not applicable to CP920 phones.
Topic
Off Hook Answering Configuration
Off Hook Answering Configuration
The following table lists the parameter you can use to configure off hook answering.
Parameter
features.off_hook_answer.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to answer an incoming call by picking up the handset, pressing the
Speakerphone key or pressing the HEADSET key directly.
Permitted
Values
0-Disabled, the user needs to press the corresponding line key, the Answer soft key or the OK key to
answer an incoming call after picking up the handset, pressing the Speakerphone key or pressing the
HEADSET key.
1-Enabled

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