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Yealink SIP-T52S Administrator's Guide

Yealink SIP-T52S
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Configuring Advanced Features
609
Configure the event of the BLF subscription.
Parameter:
account.X.blf.subscribe_event
Configure whether to handle NOTIFY
messages out of the BLF dialog.
Parameter:
account.X.out_dialog_blf_enable
Web User Interface
Configure the period of the BLF
subscription.
Configure whether to handle NOTIFY
messages out of the BLF dialog.
Navigate to:
http://<phoneIPAddress>/servlet?p=accou
nt-adv&q=load&acc=0
Details of Configuration Parameters:
Parameters
Permitted Values
Default
account.X.blf.subscribe_period
Integer from 30 to
2147483647
1800
Description:
Configures the period (in seconds) of the BLF subscription for account X.
The IP phone is able to successfully refresh the SUBSCRIBE before expiration of the
SUBSCRIBE dialog.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Note: It is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones.
Web User Interface:
Account->Advanced->Subscribe Period(Seconds)
Phone User Interface:
None
account.X.blf.subscribe_event
0 or 1
0

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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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