Final answer:
The default setting for the Caller Access field is typically 'Caller Allowed,' indicating no initial restrictions on incoming calls.
Step-by-step explanation:
The question pertains to a setting often found within telephone or communication systems. By default, the Caller Access field is usually set to Caller Allowed. This means that, unless specifically configured otherwise, a caller would be permitted to make a call to the designated number. The term implies that there are no initial restrictions on incoming calls, and therefore, any incoming call will connect, unless the administrator of the system sets up specific rules or restrictions to limit access.