TICK and IDLE_TIME

Hi everybody, my question is:

If you enable connection pooling to the DISPATCHERS parameter. Setting this attribute to the value ON to enable connection pooling for a dispatcher. Set the TICK attribute to 1.

As below:

DISPATCHERS="(PROTOCOL=tcp)(DISPATCHERS=1)(POOL=on)(TICK=1)
(CONNECTIONS=500)(SESSIONS=1000)"

And at the same time created Profile and set the IDLE_TIME parameter to some value. I want to know if these two (TICK and IDLE_TIME)parameters' values will be different what will happen? When does user will disconnect?

Why do you think PROFILES and MTS are related?
Oh!... got it, both are part of your Oracle technology solution.