cisco caller allowed call time

[kv123]

Hi,

I have a question about caller or dial-in user calling time; I have a cisco
2610, and want to make the following:
I want that dial-in user on Cisco 2610 can make callin just for example from
8.00am to 4.00pm, so at that period he is allowed to make call to cisco.
Other times of call are not allowed. Is it possible to do that on Cisco and
which command is used for that?
Every help would be appreciated.
Regards,
Ivana