The IPCO Cloudfone™ service high-level architecture is shown here:

Blue components are provided by IPCO as part of the service or as an integration when initiating the service. Grey components are part of the service delivery, but provided by the mobile operator or smartphone vendor. Blue arrows show main interfaces.

The IPCO Cloudfone™ service contains a SIP server, an IN service as well as security management, presence and provisioning provided as a managed service. On the subscribers handset IPCO delivers an IPCO Cloudfone™ SIM Applet and the IPCO Cloudfone™ App for Wi-Fi calling.