Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Description
It enables or disables the phone to obtain VLAN ID using lower preference of VLAN assignment
method, or to close the VLAN feature when the phone cannot obtain VLAN ID.
The priority of each method is LLDP/CDP > Manual > DHCP VLAN.
Permitted
Values
0-Disabled
1-Enabled, the phone attempts to use the lower priority method when failing to obtain the VLAN ID
using higher priority method. If all the methods are attempted, the phone will disable VLAN feature.
Default
0
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Wi-Fi
Wi-Fi feature enables you to connect the phones to the organization’s wireless network. Wi-Fi feature is only applic-
able to T57W/T54W/T53W/T53/T48U/T48S/T48G/T46U/T46S/T46G/T43U/T42U/T42S/T41S/T29G/T27G/CP920
phones.
You can configure the phones to operate in IPv4, IPv6, or dual-stack (IPv4/IPv6) mode, and configure IPv4 or IPv6
wireless network settings manually.
Note: To use Wi-Fi feature on T53/T48U/T48S/T48G/T46U/T46S/T46G/T43U/T42U/T42S/T41S/T29G/T27G phones, make
sure the Wi-Fi USB dongle is properly connected to the USB port on the back of the phone.
Topics
Wi-Fi Configuration
Wireless Network IP Addressing Mode Configuration
IPv4 Wireless Network Configuration
IPv6 Wireless Network Configuration
Wireless Access Point Configuration
Wi-Fi Configuration
The following table lists the parameters you can use to configure Wi-Fi.
Parameter
static.wifi.function.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the Wi-Fi feature.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T42U, T42S, T41S, T29G,
T27G, CP920
Parameter
static.network.redundancy.mode
[1]
<y0000000000xx>.cfg
Description
It configures the network connection mode to be used preferentially.
Permitted
Values
0-If Wi-Fi mode is activated, the wired network is unavailable; Wi-Fi mode must be deactivated if you
want to use the wired network.
1-Use wireless network preferentially.
2-Use wired network preferentially.
Default
2
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T42U, T42S, T41S, T29G,
T27G, CP920

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