問題文
A call across a SIP trunk needs a media termination point, and the pool of such resources holds nothing free at that moment. What does the guide say happens to that call?
選択肢
- It is held in a queue until a resource frees up, and it then keeps the whole of its media, since the resource is drawn upon on behalf of the endpoint rather than by it.
- The call goes through short of such a resource, and it then lacks the supplementary services, since the resource is drawn upon on behalf of the endpoint rather than by it.
- It goes through short of such a resource, and it then loses the whole of its media, since the resource is drawn upon on behalf of the trunk rather than by it.
- It is turned down before it is offered, and it then leaves the caller a tone, since the resource is drawn upon on behalf of the trunk rather than by it.