Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Yealink phones can obtain the provisioning server address during startup. Then the phones first download boot
files and configuration files from the provisioning server and then resolve and update the configurations written in
configuration files. This entire process is called auto provisioning. For more information on auto provisioning, refer
to Yealink SIP IP Phones Auto Provisioning Guide.
The phones can be configured to upload log files (log files provide a history of phone events), call log files and con-
tact files to the provisioning server. You can also configure a directory for each of these three files respectively.
Topics
Auto Provisioning Settings Configuration
User-Triggered Provisioning Settings Configuration
Auto Provisioning Settings Configuration
The following table lists the parameters you can use to configure settings for auto provisioning.
Parameter
static.auto_provision.attempt_expired_time <y0000000000xx>.cfg
Description
It configures the timeout (in seconds) to transfer a file via auto provisioning.
Note: It has a higher priority than the value defined by the parameter “static.network.attempt_expired_
time”.
Permitted
Values
Integer from 1 to 300
Default
20
Web UI
Settings > Auto Provision > Attempt Expired Time(s)
Parameter
static.network.attempt_expired_time
[1]
<y0000000000xx>.cfg
Description
It configures the timeout (in seconds) to transfer a file for HTTP/HTTPS connection.

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