[theclaw]

Maybe I’m living in the 1970s but I always assumed pagers just showed a phone number and you were supposed to call back?

[gambiting]

No, you can definitely send a text message to them, they just don't have the ability to send anything back.

[m23khan]

the most basic pagers can only receive callback number. More advanced ones have additional features to display text messages as well.

[83457]

Except for the 2-way ones

[chrisseaton]

If you can send a sequence of digits, you can also send a sequence of letters (a text message) using the same technology.