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Yealink SIP-T52S Administrator's Guide

Yealink SIP-T52S
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Configuring Advanced Features
635
To configure a BLF key via web user interface:
1. Click on Dsskey->Line Key.
2. In the desired DSS key field, select BLF from the pull-down list of Type.
3. Enter the phone number or extension you want to monitor in the Value field.
4. Select the desired line from the pull-down list of Line.
5. (Optional.) Enter the string that will appear on the LCD screen in the Label field.
6. (Optional.) Enter the directed call pickup code in the Extension field.
7. Click Confirm to accept the change.
To configure a BLF key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select the desired DSS key.
3. Press or , or the Switch soft key to select BLF from the Type field.
4. Press or , or the Switch soft key to select the desired line from the Account ID
field.
5. (Optional.) Enter the string that will appear on the LCD screen in the Label field.
6. Enter the phone number or extension you want to monitor in the Value field.
7. (Optional.) Enter the directed call pickup code in the Extension field.
8. Press the Save soft key to accept the change.
Busy Lamp Field (BLF) List
BLF List allows a list of specific extensions to be monitored for status changes. It enables the
monitoring phone to subscribe to a list of users, and receive notifications of the status of
monitored users. Different indicators on the monitoring phone show the status of monitored
users. The monitoring user can also be notified about calls being parked/no longer parked
against any monitored user. IP phones support BLF list using a SUBSCRIBE/NOTIFY mechanism
as specified in RFC 3265. This feature depends on support from a SIP server. You can customize
BLF LED status when the supervisor’s phone and the monitored phone are in different statuses.
For more information, refer to Configuring BLF LED Status and BLF Key Behavior on page 617.
Note
BLF list is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones.

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Yealink SIP-T52S Specifications

General IconGeneral
Touchscreen-
Display diagonal2.8 \
Backlight displayYes
Display resolution320 x 240 pixels
Lines quantity16 lines
Phonebook capacity1000 entries
Number of VoIP accounts12
AC adapter input voltage100 - 240 V
Bluetooth version2.1+EDR
Security algorithms802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface typeGigabit Ethernet
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Voice codecsG.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume controlDigital
Operating temperature (T-T)-10 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Front cameraNo
Operating system installedLinux
Weight and Dimensions IconWeight and Dimensions
Depth212 mm
Width211.6 mm
Height166.8 mm

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