[acheron]

In this house, we believe “AT protocol” refers to Hayes modem commands.

ATDT2024561414

[imoverclocked]

A slightly more modern usage for cell modems that still implement AT commands in 2025:

AT+QSINR?

AT+QRSRQ

AT+QRSRP

AT+QNWINFO

-- getting current status/band of a link

[JdeBP]

I see the error of forgetting the long distance prefix and dialling some poor innocent to squeal tones in xyr ear during Zone Mail Hour is alive and well. (-:

[Angostura]

+++ ATH0

[imoverclocked]

This brings back memories of hanging my 56k modem up with a specially crafted ping command :)