S110M not working

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Asterisk Users 5 Comments

Hi All –

I pulled from a working system a TDM400 with one s110 fxs and three
x100 fxos. I put it into a new box and the fxs no longer works. The
fxos work just fine. I thought it was odd, but I chalked it up to a
random chance failure and ordered another s110. The replacement
doesn’t work either, and now I’m confused.

dahdi_scan recognizes the s110, but it says it fails. Output looks like this:

description=Wildcard TDM400P REV E/F Board 5
devicetype=Wildcard TDM400P REV E/F
location=PCI Bus 05 Slot 01

I tried moving both the s110s to other positions on the TDM400, but it
fails in all of them.

Is this a power issue? The system it’s in only has sata power
connectors, so I had to splice on an ide power connector. Both the 5v
and 12v lines are connected through all the way from the power supply
to the tdm400 card.

If I force the issue, and manually configure the s110 like this:

5 thoughts on - S110M not working

  • Hi. FXS cards use FXO signalling, and vice versa. Think of it this way:
    FXS cards want to look like a CO when talking to stations, and FXO cards
    want to look like a phone when talking to a CO.

  • Thanks, Barry. I am aware of this. You’ll notice in the config line
    that I used fxo signalling.

    I’m just thinking that the failure that dahdi_scan see may be because
    the s110 isn’t getting power.

    On Tue, Nov 16, 2010 at 1:46 PM, Barry Miller

  • If you see “FAILED” in dahdi_scan for the FXS port, then most likely
    there will be some indication of what actually failed in the kernel log.
    Is there anything in dmesg?


  • Aha! Thanks, Shaun. dmesg says: ProSLIC on module 3 failed to
    powerup within 501 ms (0 mV only)

    That certainly looks like a power issue to me.

    So, next question, why is it not getting power if all the leads are
    connected? I guess it’s time to do the get out the current meter.