T20 web ringtone volume

[Diegoms]

Hi.

I am trying to set the volume of the ring of a T20 phone via web but can't find the proper section where to do it.

The final target is to set the volume with a script via url, trying i get able to turn on and off the phone led but not way to set volume.

here is the example of how i turn on and off led

http://***.***.***.***/servlet?p=login&q=login&username=admin&pwd=admin&jumpto=URI&p=features-powerled&CommonPowerLightOn=1&q=write

Should be a similar way to change ringtone volume, didn't?