My first full time job was doing phone tech support for dialup internet users for one of Australia's biggest ISPs in the late 90s. Many of the customers who'd c

My first full time job was doing phone tech support for dialup internet users for one of Australia's biggest ISPs in the late 90s. Many of the customers who'd call had just bought a new big-brand desktop PC (most commonly a HP Pavillion) with a winmodem in it, and so our job was to get it to work, even if their phone line was bad, or had other devices (fax machines, alarms, wireless phones) causing interference. We became very very familiar with the AT command sets to adjust the settings on all the different modem models, and with winmodems you'd often just have to slow it right down to 33k, 28k or even less.