Yealink SIP-T52S User Manual

Customizing Your Phone
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4. Edit the corresponding fields.
5. Press Save.
The entry is successfully saved to the local directory.
Adding a Contact to the Blacklist Directory
1. Navigate to Menu->Directory->Mobile Contacts.
2. Highlight a desired contact, and then press Option.
3. Select Add to Blacklist.
4. Edit the corresponding fields.
5. Press Save.
The entry is successfully saved to the blacklist directory.
For how to place calls to and/or search for contacts in the mobile contacts directory, refer to
Placing Calls to Contacts and/or Searching for Contacts.
Note
Updating the Mobile Contacts Directory
1. Navigate to Menu->Directory->Mobile Contacts.
2. Press Option, and then select Update.
The LCD screen prompts “Updating, please wait…”. Note that the IP phone should be
The mobile contact that is added to the local directory or blacklist will not disappear, even after
you disconnect the mobile phone from the IP phone.

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