1.   Affordable digital phones have sealed the fate of the original one-way pager capable only of receiving numeric messages.

2.   Incoming numeric messages will be checked against the Pilot address book.

3.   No sound passes through those cables, just numeric messages that tell other machines which note to play and what sound to use.

4.   Pagers, boxes of plastic and metal smaller than a deck of playing cards, contain electronic screens that can display text and numeric messages.

5.   Pagers, made of plastic and metal, are smaller than a deck of playing cards and include an electronic screen that can display text and numeric messages.

6.   Sending alpha-numeric pages is much more involved than simple numeric messages.

7.   To reach someone, a caller had to dial a number and tap in a numeric message.

8.   From public pay phones, she then used a prepaid calling card to send coded numeric messages to a pager owned by Cuban intelligence.