In a switched-circuit network, devices known as switches are used to connect the caller to the callee.

Hotline staff immediately connect the caller to a service provider in his or her area.

The operators are most often not trained emergency service providers, and are only there to do their best to connect the caller to the appropriate emergency service.

Another patch cord connected the caller to the destination telephone line.

I like to think she describes me as her 'gentleman caller'.

She just wants a gentleman caller.

The era of the gentleman caller ended in the early 20th century and the modern idea of dating developed.

The wife and her gentleman caller arrive by taxi at the fancy restaurant where they are shown to the same table the husband had occupied earlier.

My mum and aunty were single, and there were always gentleman callers.

After unsuccessfully attempting to communicate with the unknown caller, he hangs up.

Not answering the doorbell to •unknown callers.

However, he no longer responds to emails from strangers or picks up his telephone to unknown callers.

Unknown callers are asked to announce themselves and press a key before your phone rings.