Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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EDK Soft Keys Configuration
You can customize the soft keys as need. This feature is typically used to access frequently-used functions or to cre-
ate menu shortcuts to frequently-used phone settings.
Custom soft keys can be added in the following phone states:
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Idle - There are no active calls on the phone.
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Alerting (or ringing) – There is an incoming call on the phone.
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Connecting – There is an outgoing call on the phone. Moreover, the call is connecting.
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Transfer connecting – There is a call being transferred to another phone. Moreover, the call is connecting.
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Talk – There is an active call on the phone.
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Call failed – The outgoing call encounters a failure.
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Ring back - There is an outgoing call on the phone. Moreover, the phone is in the ringback state.
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Transfer ring back - There is a call being transferred to another phone. Moreover, the phone is in the ringback
state.
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Hold – The call is placed on hold on the phone.
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Held – The call is held.
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Conference – The phone sets up a conference call.
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Dial tone –The phone is on the dialing screen without entering the number.
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Dialing – The phone is on the dialing screen with entering the number but not dialing.
Note: Configuring the custom soft keys may affect the softkey layout in different call states. For more information on softkey
layout, refer to Softkey Layout.
The following table lists the parameters you can use to configure EDK soft keys.
Parameter
softkey.X.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the custom soft key X.
Note: It works only if “features.enhanced_dss_keys.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
softkey.X.label
[1]
<y0000000000xx>.cfg
Description
It configures the text displayed on the soft key label.
Note: It works only if “features.enhanced_dss_keys.enable” and “softkey.X.enable” are set to 1
(Enabled).
Permitted
Values
String
Default
Blank
Parameter
softkey.X.position
[1]
<y0000000000xx>.cfg
Description
It configures the location on the phone screen for soft key X.
Note: It works only if “features.enhanced_dss_keys.enable” and “softkey.X.enable” are set to 1
(Enabled).
Permitted
Values
Integer from 0 to 10
If it is set to 0, the soft key X is located in the first available position from the left.
If it is set to other values, a More soft key appears and the soft key X is located in the specified pos-
ition. The following soft keys are moved by one position to the right. Press the More soft key to view
the remaining soft keys.

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