ENTER YOUR USERNAME
This is the User Name which you need to provide before login to your dialer. If you will not be able to provider the correct username then Application will not work and not regsitered.
ENTER YOUR PASSWORD
In this box you need to type the correct Password. If Password will be wrong then application will not registered.
This is the Caller ID which will be shown to the dialed number. For some destination Caller ID not supported. Also you need to configure the Caller ID in your customer portal. Otherwise Caller ID will not shown.
These options will change the behaviour of your dialer. So if you choose yes then your dialer will be auto login and will not show username and password screen everytume. If you want to change Username or password then you need to click on dialer setting.