Yealink SIP-T48U Administrator's Guide

Call Features
378
Parameter
features.call_num_filter <y0000000000xx>.cfg
Description
It configures the characters the phone filters when dialing.
If the dialed number contains configured characters, the phone will automatically filter these char-
acters when dialing.
Example:
features.call_num_filter = -
If you dial 3-61, the phone will filter the character - and then dial out 361.
Note: If it is left blank, the phone will not automatically filter any characters when dialing.
Permitted
Values
String within 99 characters
Default
, -()
Web UI
Features > General Information > Call Number Filter
IP Address Call
You can set the phone whether to receive or place an IP call. You can neither receive nor place an IP call if you dis-
able this feature.
Topic
IP Address Call Configuration
IP Address Call Configuration
The following table lists the parameter you can use to configure IP address call.
Parameter
features.direct_ip_call_enable <y0000000000xx>.cfg
Description
It enables or disables to allow IP address call.
Note: If you want to receive an IP address call, make sure “sip.trust_ctrl” is set to 0 (Disabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Features > General Information > Allow IP Call
Ignoring Incoming Calls
By default, when a phone receives an incoming call, the phone screen prompts the incoming call information. You
should handle the incoming call first before performing other features. For example, you should handle the incom-
ing call when there is an active call in progress, otherwise, you cannot hold or set up a conference on the current
call.
You can configure the phone to ignore an incoming call. The incoming call is still in the progress and is not rejec-
ted, you can choose to answer it or not, or perform other features.
When the phone receives an incoming call in the idle state, the screen prompts the incoming call information.
l To ignore the call, and initial a new call, pick up the handset, press the Speakerphone key or HEADSET key,
press keypad or other line keys.
l
To answer the incoming call, press the corresponding line key, the Answer soft key or the OK key.

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