Isn't SS7 going away?

It's not used in 4G/5G; Diameter is used instead. Most cellular telcos are ending or planning to end their 2G/3G networks (3G moreso than 2G). In the US, the FCC continues to push for IP-only networks, and AT&T is turning off their landline services (though they keep pushing out the date, it's currently at 2029). Obviously, the US is not the only country, but this seems to be the global direction.

Nonetheless, I can imagine that Oracle will still worm its way into telco recordkeeping and billing systems even if the protocol changes...