One of our customers uses Cisco modems, and they are now all just so much junk, replaced with Cradle Point super expensive modems. But this is just the latest in a long succession of mobile phone technology changes. I still have analogue phones and somewhere a CDMA modem, as well as 2G modems and phones, I can now add 3G modems and phones to the pile which includes some 80286 computers and a Macintosh Centris, although to be fair that still works, also analog TV's and heaven forbid some digital TV's.
Technology marches on. When all else fails Amateur Radio will still be going.