Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Web UI
Settings > Tones > Dial Recall
Parameter
voice.tone.info <y0000000000xx>.cfg
Description
It customizes the info tone. The phone will play the info tone with the special information, for example,
the number you are calling is not in service.
The value format is Freq/Duration. For more information on the value format, refer to the parameter
“voice.tone.dial”.
Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set
it to 0.
Permitted
Values
String
Default
Blank
Web UI
Settings > Tones > Info
Parameter
voice.tone.stutter <y0000000000xx>.cfg
Description
It customizes the tone when the IP phone receives a voice mail.
The value format is Freq/Duration. For more information on the value format, refer to the parameter
“voice.tone.dial”.
Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set
it to 0.
Permitted
Values
String
Default
Blank
Web UI
Settings > Tones > Stutter
Parameter
voice.tone.message <y0000000000xx>.cfg
Description
It customizes the tone when the phone receives a text message.
The value format is Freq/Duration. For more information on the value format, refer to the parameter
“voice.tone.dial”.
Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set
it to 0.
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except CP920
Web UI
Settings > Tones > Message
Parameter
voice.tone.autoanswer <y0000000000xx>.cfg
Description
It customizes the warning tone for the auto answer.
The value format is Freq/Duration. For more information on the value format, refer to the parameter
“voice.tone.dial”.
Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set
it to 0.
Permitted
Values
String

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