Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
60
Web UI
Network > Advanced > Port Link > PC Port Link
Para-
meter
static.network.vlan.pc_port_mode
[1]
<y0000000000xx>.cfg
Descrip-
tion
It configures how the phone processes packets for the PC port when VLAN is enabled on the PC port.
Permitted
Values
0-The phone forwards the packets sent from the PC port to the Internet port directly.
1-If there are no VLAN tags in the packets sent from the PC port to the Internet port, the phone tags the
packets and then forward them; else, the phone forwards the packets directly.
Default
1
Sup-
ported
Devices
All phones except CP920
Para-
meter
static.network.pc_port.mode
[1]
<y0000000000xx>.cfg
Descrip-
tion
It configures the PC port mode.
Permitted
Values
0-The phone can only share the wired network with the connected PC, not the wireless network.
1-The phone can share both the wired network and wireless network with the connected PC.
Default
0
Sup-
ported
Devices
T57W, T54W, T53W, T53
Case
Scenario
When the phone is connected to the wireless network, the office's PC can obtain the network through
the phone's PC port.
[1]
If you change this parameter, the phone will reboot to make the change take effect.
VPN
Yealink phones use OpenVPN or L2TP to achieve VPN feature.
For more information on OpenVPN, refer to OpenVPN Feature on Yealink phones.
Topics
OpenVPN Related Files
VPN Configuration
Example: Using VPN based on L2TP Prototol
Exporting the OpenVPN Configuration File from the Phone
Importing the OpenVPN Configuration File to Phone
OpenVPN Related Files
To use OpenVPN, you should collect the VPN-related files into one archive file in .tar format and then upload this tar
file. The VPN-related files include certificates (ca.crt and client.crt), key (client.key) and the configuration file
(vpn.cnf) of the VPN client.
The following table lists the name of the OpenVPN certificates and key in the configuration file (vpn.cnf) for Yealink
phones:
VPN Files Description
ca.crt CA certificate

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