Yealink SIP-T48U Administrator's Guide

Phone Customization
257
Devices
Web UI
Dsskey > Line Key > Line KeyX > Type
Phone UI
Menu > Features > DSS Keys > Line Key X > Type
Parameter
linekey.X.line
[1]
<y0000000000xx>.cfg
Descrip-
tion
It configures the desired line to apply the line key feature.
Permitted
Values
T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G: 0, 1-16;
T53W/T53/T43U/T42U/T42S/T42G: 0, 1-12;
T41P/T41S/T27G: 0, 1-6;
T40P/T40G/T23P/T23G: 0, 1-3
T21(P) E2: 0, 1-2
Note: The permitted value 0 is configurable only when "features.fwd_mode" is set to 1 (Custom) and
"linekey.X.type" is set to 2 (Forward).
Default
1
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Dsskey > Line Key > Line KeyX > Line
Phone UI
Menu > Features > DSS Keys > Line Key X > Account ID
Parameter
linekey.X.value
[1]
<y0000000000xx>.cfg
Descrip-
tion
It configures the value for some line key features.
For example, when you assign the Speed Dial to the line key, this parameter is used to specify the con-
tact number you want to dial out. It is also used to specify the contact number with the DTMF
sequence. The contact number and DTMF sequence are separated by commas.
Permitted
Values
String within 99 characters
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Dsskey > Line Key > Line KeyX > Value
Phone UI
Menu > Features > DSS Keys > Line Key X > Value
Parameter
linekey.X.label
[1]
<y0000000000xx>.cfg
Descrip-
tion
It configures the label displayed on the phone screen.
This is an optional configuration.
Permitted
Values
String within 99 characters
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Dsskey > Line Key > Line KeyX > Label

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