Afaik there's no quota, but I think you could use a little trick (and I remark I'm guessing a little here)
You can configure ACcess Settings > Max Session User Settings
And then you can configre System Administration > Max User Session Global Settings > Max User Session Timeout
Max User Session Timeout Settings |
Unlimited Session Timeout | No timeout. |
Max User Session Timeout | Once the session timeout is reached, ACS sends a fake STOP packet to close the respective session and update the session count. Note The user is not enforced to logout in the device. |
So I guess if you want a "quota" of 3 hours you can configure "max user session timeout" of 1 hour and set "Max session user setting" of 3.
But if you logout I guess the "quota" reverts to zero, so there's no "acummulative quota". I repeat I'm guessing here, sadly I don't have time right now to test it.
Kind regards