Yealink SIP-T48U Administrator's Guide

Network Configurations
39
Web UI
Network > Advanced > VLAN > PC Port > Priority
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > VLAN > PC Port > Priority
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > VLAN > PC Port > Pri-
ority
[1]
If you change this parameter, the phone will reboot to make the change take effect.
DHCP VLAN Configuration
When the VLAN discovery method is set to DHCP, the phone examines the DHCP option for a valid VLAN ID. You
can customize the DHCP option used to request the VLAN ID.
The following table lists the parameters you can use to configure DHCP VLAN discovery.
Parameter
static.network.vlan.dhcp_enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the DHCP VLAN discovery feature.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Network > Advanced > VLAN > DHCP VLAN > Active
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > VLAN > DHCP VLAN > DHCP VLAN
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > VLAN > DHCP VLAN >
DHCP VLAN
Parameter
static.network.vlan.dhcp_option
[1]
<y0000000000xx>.cfg
Description
It configures the DHCP option from which the phone will obtain the VLAN settings.
Multiple DHCP options (at most five) are separated by commas.
Permitted
Values
Integer from 1 to 255
Default
132
Web UI
Network > Advanced > VLAN > DHCP VLAN > Option (1-255)
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > VLAN > DHCP VLAN > Option
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > VLAN > DHCP VLAN >
Option
[1]
If you change this parameter, the phone will reboot to make the change take effect.
VLAN Change Configuration
The following table lists the parameter you can use to configure the VLAN change.
Parameter
static.network.vlan.vlan_change.enable
[1]
<y0000000000xx>.cfg

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