I used these models for many years, remote early version was little
tone generator, later used touch tone keypad, it got hard and
expensive to buy outgoing loop casette, and over time they become
flakey.It could rewind new messages and play them back

I use machine for business, and finally settled on AT&T / LUCENT
1772 answering machine. digital and highly reliable bought a BUNCH
WHEN THEY WENT OUT OF PRODUCTION.

new answering machines are purely built for cheap price have short
record times like 10 minutes and are junk if you ask me