We have illustrated the configuration with some of the popular models which should give you an idea of configuration of all softphones available. Preference of models depends on your choice and some of the features / codecs each phone offers. Com1 will work with all models of softphones with SIP connectivity and in our experience each customer has had varied experience with various models and have preferred different softphones for their applications. We will recommend you to try various models hands on before you choose the model appropriate for you.
Settings –> Account Settings –> SIP Account