Hello,
my SPA worked a lot of years without problems under various phone providers and same SIP provider until my last change with a new router installed. I have a problem with the router configuration which I still didn't solve but while testing this issue suddenly my outgoing calls after dialtone and dial get the busy tone.
I configured the SPA with the following dial plan: (xx.<:@gw0>|<#,:>x.)
I'm stuck - since some days I'm searching what could be wrong and don't get it.
Anyone can give me an idea how I can debug to find the reason?
Regards, Klaus