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Hi,
I have a old serial medem connected to phone line, I'd like to check if the telephone receiver is up or down. This should be possible by AT commands.. but I cant find any commends that do the job.
Anyone have some hints ?
I assume by receiver up/down you are wanting to check for an off hook condition or no dial tone. If the modem command is set to x2 and you attempt a call i.e atdt the modem will respond with a no dialtone message after the wait time (default 2 sec).
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