Stephen Bosch wrote: > Stephen Bosch wrote: >> Hi: >> >> I have a Sangoma A200 card installed in a server with two FXO modules >> and one FXS module. >> >> Analog sets connected to the FXS module have a "squeaky static" -- it's >> like static mixed with the sound of someone vigorously cleaning a window >> a few doors down. >> >> In other words, it's not a classic static noise, but it is noise, and >> it's distracting. Remote callers can hear this noise. >> >> I have, by turns: >> >> - Tested the line with the same analog sets plugged in at the >> demarcation point. No noise. (None of the SIP devices in this >> configuration have this noise for outgoing calls, so I'm sure it's got >> something to do with the FXS module). >> >> - Plugged the known good analog sets straight into the server >> >> - Moved the FXS module off the REMORA daughtercard to the main card >> >> - Replaced the FXS module with a new one >> >> - Run the server off of battery power, to see if the noise is garbage >> leaking in off the AC >> >> - Turned off the PoE midspan >> >> The next thing I'm going to try is turning off the switch it's plugged >> into. When that is done, I'll have done everything short of move the >> server to a different location. > > Maybe the power supply is generating this crap. > > Hmn. I'm going to test this hypothesis.
Okay -- that didn't work. I swapped the power supply out with a better one, and even disconnected the extra ventilation fan. The noise is different but still there. To those with experience with FXS modules, I welcome your input. -Stephen- _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
