>From time to time I have customers who have problems with FXS ports 'locking up'. In most cases when this happens the port will be stuck in the S_WAIT_RELEASE state like so.<br><br> 2/0/2 None - S_WAIT_RELEASE FXSLS_ONHOOK
<br><br>I've not found any way to clear this except reloading the router. I'm wondering if anyone can give me some insight as to why this happens and if there's a way to clear the port when it does. <br><br>In this particular case, the connected device is a fax machine. Is it possible that the fax machine is causing some voltage on the line that is seizing the port? If so, can anyone recommend a surge protector to protect against this?
<br><br>This particular customer is running a 2821 with a HD-NM and 12.4(XC)4 but I've had the problem with VIC2-4FXS/DID cards as well. <br><br>Thanks<br><br clear="all"><br>-- <br>kris seraphine