Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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8. Click Confirm to accept the change.
Dsskey Recording (Record and URL Record)
Yealink IP phones support record calls by pressing the call record key. It depends on support
from a SIP server. When the user presses the call record key, the IP phone sends a record
request to the server. IP phones themselves do not have memory to store the recording, what
they can do is to trigger the recording and indicate the recording status.
Normally, there are 2 main methods to trigger a recording on a certain server. We call them
record and URL record. Record is for the IP phone to send the server a SIP INFO message
containing a specific header. URL record is for the IP phone to send the server an HTTP GET
message containing a specific URL. The server processes these messages and decides to start or
stop a recording.
Note
Record
When a user presses a record key for the first time during a call, the IP phone sends a SIP INFO
message to the server with the specific header “Record: on”, and then the recording starts.
Example of a SIP INFO message:
Via: SIP/2.0/UDP 10.3.20.14:5060;branch=z9hG4bK1870385345
From: "1009" <sip:1009@10.2.1.48:5060>;tag=1385842459
To: <sip:1006@10.2.1.48:5060>;tag=2383911905
Call-ID: 0_1289812066@10.3.20.14
CSeq: 2 INFO
Contact: <sip:1009@10.3.20.14:5060>
Max-Forwards: 70
User-Agent: Yealink SIP-T46G 28.81.0.25
Record: on
Content-Length: 0
It is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones.

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