Yealink SIP-T52S Administrator's Guide

Setting Up Your System
77
Details of Configuration Parameter:
Parameter
Permitted Values
Default
static.network.vlan.vlan_change.enable
0 or 1
0
Description:
Enables or disables the IP phone to obtain VLAN ID using lower priority of VLAN
assignment method or disable VLAN feature when the IP phone cannot obtain VLAN ID
using the current VLAN assignment method.
0-Disabled
1-Enabled
The priority of each method is: LLDP/CDP>Manual>DHCP VLAN.
If it is set to 1 (Enabled), the IP phone will attempt to use the lower priority of VLAN
assignment method when failing to obtain the VLAN ID using higher priority of VLAN
assignment method. If all the methods are attempted, the phone will disable VLAN
feature.
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
None
Phone User Interface:
None
LLDP
LLDP (Linker Layer Discovery Protocol) is a vendor-neutral Link Layer protocol, which allows IP
phones to receive and/or transmit device-related information from/to directly connected
devices on the network that are also using the protocol, and store the information about other
devices.
When LLDP feature is enabled on IP phones, the IP phones periodically advertise their own
information to the directly connected LLDP-enabled switch. The IP phones can also receive
LLDP packets from the connected switch. When the application type is “voice”, IP phones
decide whether to update the VLAN configurations obtained from the LLDP packets. When the
VLAN configurations on the IP phones are different from the ones sent by the switch, the IP
phones perform an update and reboot. This allows the IP phones to be plugged into any
switch, obtain their VLAN IDs, and then start communications with the call control.

Yealink SIP-T52S Specifications

General

Touchscreen	-
Display diagonal	2.8 \
Backlight display	Yes
Display resolution	320 x 240 pixels
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
Bluetooth version	2.1+EDR
Security algorithms	802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume control	Digital
Operating temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Front camera	No
Operating system installed	Linux

Weight and Dimensions

Depth	212 mm
Width	211.6 mm
Height	166.8 mm