Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
674
Parameter
Permitted Values
Default
1-Enabled
If it is set to 0 (Disabled), the IP phone can neither send nor receive text message(s).
Note: It is not applicable to CP920 IP phones.
Web User Interface:
None
Phone User Interface:
None
Multicast Paging
Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP) streams
to/from the pre-configured multicast address(es) on the desired channel without involving SIP
signaling. Up to 31 listening multicast addresses can be specified on the IP phone.
Yealink IP phones support the following 31 channels:
 0: Yealink IP phones running firmware version 80 or prior and third-party devices
supporting paging with Yealink IP phones running firmware version 80 or prior (e.g., Cisco
IP phones) are all grouped into the channel 0. This is for compatibility with the old Yealink
IP phones and third-party devices.
 1 to 25: each corresponds to the Polycom’s channel 1 to 25 respectively. This is for
compatibility with the Polycom IP phones.
 26 to 30: This is for separate communication among the Yealink IP phones supporting
these channels.
The IP phones will automatically ignore all incoming multicast paging calls on the different
channel.
Sending RTP Stream
Users can send an RTP stream without involving SIP signaling by pressing a configured
multicast paging key or a paging list key. A multicast address (IP: Port) and a channel (0 to 30)
should be assigned to the multicast paging key, which is defined to transmit RTP stream to a
group of designated IP phones on the desired channel.
When the IP phone sends the RTP stream to a pre-configured multicast address belongs to a
desired channel, each IP phone preconfigured to listen to the multicast address on the same
channel can receive the RTP stream. When the originator stops sending the RTP stream, the
subscribers stop receiving it.

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