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Yealink SIP-T48U Administrator's Guide

Yealink SIP-T48U
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
268
Y=1 or 21, default: 37 Switch, only for T29G/T27G
Y=2-20, 22-40, default: 0 NA, only for T29G/T27G
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T29G, T27G
Web UI
Dsskey > Ext Key > Type
Parameter
expansion_module.X.key.Y.line
[1]
<y0000000000xx>.cfg
Description
It configures the desired line to apply the ext key feature.
Permitted
Values
T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G: 0, 1-16;
T53W/T53/T43U: 0, 1-12;
T27G: 0, 1-6;
Note: The permitted value 0 is configurable only when "features.fwd_mode" is set to 1 (Custom) and
"expansion_module.X.key.Y.type" is set to 2 (Forward).
Default
1
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T29G, T27G
Web UI
Dsskey > Ext Key > Line
Parameter
expansion_module.X.key.Y.value
[1]
<y0000000000xx>.cfg
Description
It configures the value for some ext key features.
For example, when you assign the Speed Dial to the programmable key, this parameter is used to spe-
cify the contact 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
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T29G, T27G
Web UI
Dsskey > Ext Key > Value
Parameter
expansion_module.X.key.Y.label
[1]
<y0000000000xx>.cfg
Description
It configures the label displayed on the LCD screen for a specific programmable key.
This is an optional configuration.
Permitted
Values
String within 99 characters
Default
Blank
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T29G, T27G
Web UI
Dsskey > Ext Key > Label
Parameter
expansion_module.X.key.Y.extension
[1]
<y0000000000xx>.cfg
Description
For multicast paging:
It configures the channel of the multicast paging group.
For the BLF/BLF list/intercom feature:
It configures the pickup code.

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Yealink SIP-T48U Specifications

General IconGeneral
Handset typeWired handset
Product typeIP Phone
Product colorGray
USB 2.0 ports quantityUSB 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 supportYes
Ethernet LAN (RJ-45) ports2
Display diagonal7 \
Display resolution800 x 480 pixels
Lines quantity- lines
Phonebook capacity1000 entries
Number of VoIP accounts16
Voice codecsAGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithmsAES, HTTPS, SRTP, TLS
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
Front camera-
AC adapter input voltage100 - 240 V
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Keypad number of keys29
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Width226 mm
Height185 mm

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