>There was briefly a thing called HSCSD That was never deployed commercially in the US, it tied up too many channels. I was able to use CSD on T-Mobile and AT&

>There was briefly a thing called HSCSD That was never deployed commercially in the US, it tied up too many channels. I was able to use CSD on T-Mobile and AT&T Wireless back in the day. Worked well enough during unlimited nights and weekends to get on IRC.