Yealink CP860 User Manual page 154

User Guide for the CP860 HD IP Conference Phone
Enter the desired time in the Play Hold Tone Delay field.
3.
Click Confirm to accept the change.
4.
How to make a call using SRTP?
You can enable SRTP to encrypt the audio stream(s) of phone calls. The parties participating in
the call should enable SRTP.
To enable SRTP via web user interface:
Click on Account->Advanced.
1.
142