問題文
A voice gateway that runs Cisco Unified CME carries calls that arrive from outside, and the operator has written out no inbound dial peer that answers to them. What becomes of such a call?
選択肢
- It is passed to the default class of restriction, since an inbound dial peer is drawn for a call out of the restriction lists that the operator has written out.
- It is held back until an outbound dial peer answers, since an inbound dial peer is drawn for a call after the destination of that call has been settled.
- It is turned away by the gateway on the spot, since an inbound dial peer is drawn for a call purely out of the entries that the operator has written out.
- It is let through by an implicit dial peer, since an inbound dial peer is drawn for a call even where the operator has written out nothing of the kind.