Network Core:Circuit Switching network resources dividing link bandwidth (e.g.,bandwidth) into "pieces" divided into "pieces" *frequency division pieces allocated to calls *time division resource piece idle if not used by owning call (no sharing) Introduction 1-18Introduction 1-18 Network Core: Circuit Switching network resources (e.g., bandwidth) divided into “pieces” ❑ pieces allocated to calls ❑ resource piece idle if not used by owning call (no sharing) ❑ dividing link bandwidth into “pieces” ❖ frequency division ❖ time division