Using Call Recording Featureon Yealink SIP T2XG phones

1、Summary

Call recording enables you to record a call. It depends on the support of server and the duration you can record for is also defined by the server. Yealink phones, including T20, T22, T26 and T28, with firmware version not lower than V50, support to set a DSS Key as record button that can be pressed during a call to request a recording to the server. The phones themselves don’t have memory to store the recordings, what they can do is only to trigger it on the server and indicate the recording status. Normally, there are 2 main methods to trigger a recording on a certain server (PBX). One is for the phone to send to the PBX a SIP INFO containing a specific header. The other is for the phone to send an HTTP URL to the PBX. Certain server will know to deal with such messages and decide to start or stop a recording. This document will show you how each method works and how to configure for each.

2.Recording triggered by SIP INFO

2.1Configurations on the phone

(1)Via web management through page Phone -> DSS Key. Any DSS Key can be configured by selecting Type as Record, as shown below:

(2)Via phone menu on LCD through Menu -> Features -> DSS Keys. Similar as it is on web page, just to configure any wanted DSS Key as below:

2.2How the SIP INFO works

2.2.1Start a recording

Assume that you have DSS Key 1 configured as above, during an active call, if you press this button for the first time, the phone will send out a SIP INFO to the PBX. The SIP message is like:

Receiving such a message, the certain supporting server will know to start recording.

2.2.2Stop the recording

To stop recording, just to press the same button for the second time, with which the phone will send the SIP INFO like below:

3.Recording triggered by HTTP URL

3.1Configurations on the phone

 (1)Via web management through pageDSS Key. Set any DSS Key by selecting the Typeas URL Recordand assigning the Expansionwith a certain URL. This is tested with Epygi PBX and the URL for this PBX is http://10.1.2.224/phonerecording.cgi?model=yealinkwhere IP 10.1.2.224 indicates the SIP server address. As shown below:

(2)Similarly,  it  can  be  configured  via  phone  menu  through Menu ->  Features ->  DSS  Keys,  as  shown below: 

3.2How the HTTP URL works

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