Connected Linksys spa 3102 and GSM Wavelink FCT C6 port FXO, caught in this classic problem of a busy signal.
Use the PSTN Disconnect Detection-> Detect Polarity Reversal failed, as when connecting to GSM sends something that SPA immediately terminates the connection.
Recorded a busy signal, it turned
Country: Ukraine, Kyivstar GSM.
But no catches!
Can somebody help me?