On Jan 13, 2008 3:13 PM, Daniel Allen <[EMAIL PROTECTED]> wrote: > I have a POTS line that is shared between a regular phone and a modem. > > If the modem attempts to dial out when the phone's off the hook, > there's an audible click as the modem checks the line, sees it's in > use, and hangs up. > > How should I do this without the audible click? Is there an obscure > (or just obscure to me) Hayes command to test the line without > bringing the modem off the hook? Or do I want to try (yet another) > different modem? >
ISTR that the modems simply go off-hook to listen for the dial tone. I don't know of any modem that listens for dial tone without going off-hook, especially since on an inactive line, its the process of going off hook that signals the CO to apply dial tone. Disclaimer: I am not a POTS expert.
