With the default library, the gsmAcces.begin() can hang on AT%13%, which means the modem isn't answering. If you add this timeout, if the modem hasn't successfully connected to the GSM network in 30s it tries again.
With the default library, the gsmAcces.begin() can hang on AT%13%, which means the modem isn't answering. If you add this timeout, if the modem hasn't successfully connected to the GSM network in 30s it tries again.