in the device profile you create for each EM user, you have to subscribe to the extension mobility service as you did per phone device.
this done you will will be able to logout after you have logged in.
by the way you can create two extension mobility services with names login and logout, repectively. with the same url but only names differ.
subscribe EM login per phone and and subscribe logout per device profile.
this will be meaningful for you IPT users.
hth
/majdi
