Find the answer to your Linux question:
Results 1 to 3 of 3
Alright, so I have a external serial modem, it has worked fine up until now. Last night, there was a thunderstorm and we had two power outages in pretty quick ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined!
    Join Date
    Jul 2005
    Posts
    3

    External serial modem suddenly not connecting anymore


    Alright, so I have a external serial modem, it has worked fine up until now. Last night, there was a thunderstorm and we had two power outages in pretty quick succession. I restart my computer, did a quick fsck, and everything seems fine.

    Except one thing.

    My modem won't connect anymore. It's attached to ttyS0, and when I run pon it just sits there. plog shows that it's sitting there waiting for OK and never getting it. Twice. it looks like this (paraphrased):

    send ATZ:
    expect (OK)
    alarm
    send AT
    expect (OK)
    alarm
    script ip-up failed.

    I am assuming that alarm means time-out, since it only appears after aboiut a minute of waiting, and that ATZ and AT are different initialization strings for the modem.

    I know that the phone cable going to the modem is fine, because I plugged a phone into it and got a dial tone. I assume that the serial port is fine because otherwise it wouldn't be able to even get that far in the ip-up script, right? I don't happen to have anything else I could use to verify that the serial port is fine (unless there's some command line test I could do to check...my knowledge of the huge repository of command line tools is far from complete.)

    I am running Ubuntu Warty.

    So any ideas?

  2. #2
    Just Joined!
    Join Date
    Nov 2004
    Location
    AU
    Posts
    58
    it's broken

  3. #3
    Linux Guru
    Join Date
    May 2004
    Location
    forums.gentoo.org
    Posts
    1,817
    Quote Originally Posted by junme
    it's broken
    Yeah, could be. If you don't have surge protection for the modem, that's a good chance. Maybe you should open the modem case and see if there are damaged components before you sell the modem on eBay (okay, that's not funny.)
    /IMHO
    //got nothin'
    ///this use to look better

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •