| Rev | Author | # | Line |
|---|---|---|---|
| 1 | IanMcDonald | 1 | The PublicSwitchedTelephoneNetwork is how most voice calls and some data travels today. |
| 2 | |||
| 3 | This infrastucture has served well for many years and is in the process of being replaced in most countries by an [IP] network. | ||
| 4 | |||
| 5 | Also known as [POTS] |
