PPP Protokoll - Close Device

Hello,

I create on a connect EM an PPP Device with an fixed ip address for a passiv connection. But sometimes i must dial out with an aktiv connection an non ip address.
But I can not close the device or change the settings from the device. I use the Net-OS 6.3
Are there any tricks to change the mode to passiv and change the other settings how Authentication and so on?

thx,
Frank