In Application,
I am facing Provider.OUT_OF_SERVICE and not getting the call. I just added the below condition reset the provider connection

javax.telephony.Provider - provider

createProvider((stationId)) {
JtapiPeerFactory.getJtapiPeer(jtapiClassName);
provider = jtapiPeer.getProvider(providerString)
return provider;
}


if (null != provider && provider.getState() != Provider.IN_SERVICE) {
provider.shutdown();
provider = null;
provider = createProvider(stationId);
provider.addProviderListener(providerListener);
terminal.addCallListener(listener);
}