When in a SIP call, how do we mute the microphone?

I tried the normal way when in a zoom meeting and that failed because it says I am not in a meeting.

Jan 24 09:58:42.353
#### SSH Device Write ####
“zConfiguration Call Microphone Mute: on\r”

Jan 24 09:58:42.357
#### SSH Device Response ####
zConfiguration Call Microphone Mute: on
\r\n"

Jan 24 09:58:42.392
#### SSH Device Response ####
“*r CommonResult(status=Error):
*r Result reason: “Not in meeting”
** end
ERROR\r\n”

Hello, it seems like SIP calls are not being recognized as a regular meeting call and since “zConfiguration Call Microphone Mute” is a in meeting only command, it does not work. A workaround you might try is to change the audio input volume using "zConfiguration Audio Input Volume: "