It doesn't. pppd redirects stdin/stdout to be the proper device before exec'ing chat. Eric wrote: > This is something I've never understood. How does chat know what terminal > to talk to? Does it assume that /dev/modem is a link to the terminal the > modem is on? What is the proper way, to, say, send ATZ to a modem on COM > 2? -- Jens B. Jorgensen jjorgens@bdsinc.com