Security Button Feature on DT800 Series phones

[edsitnetworks]

Hi all

I have a client using the security button (physical) on the DT700 series phones and recently i supplied the DT800 units as replacements. Looks like the security button has been removed on the new model. Is there a way to activate the phone lock using configuration and through a DSS key ? Is there a document detailing the features comparison DT700 vs DT800 ?

I am running the SV9100

Thanks guys