Our school has introduced a new PA system.

The filesystem of my computer has broken down.

He works at a major news agency.

We are working on building a new communications network.

My specialty is telecommunications.

He is known as an excellent correspondent.

I bought new clothes through mail-order.

We have started selling our new products by mail-order and online ordering.

I work every day using computer communication.

This problem cannot be solved unless both sides cooperate.