You are completely free in choice of communication method and frequency. From experience we know that Skype is a preferred tool for daily communication. The ideal frequency depends greatly on the project, the development stage of the project and perhaps most importantly: the level of detail in documentation of the project. If this is handled professionally and thoroughly, there will be less need for communication. We recommend using a proper projectmanagementsystem to help guide this process.
The size and seniority of the team also plays a major role. If there are one of more senior professionals in your team, or perhaps even a teamlead, the entire team will be able to operate more indepedently.
If you wish to achieve a high level of independence, we recommend adding a Product Owner to the team.