Method and node for connecting mobile computing devices

For switching circuit protocol a telecommunication service and connected to a are enveloped data chip data network and network phone. The service node is connected to for IS-41 signal transmission protocol the wireless network roaming. The service node connected structure of data area networks calculating mobile device on state information, comprising a position and log-on message. Location information comprises a interim data network address of access calculating mobile device. The service node for managing a voice call from calculating mobile device. Calling for receiving and there is no calculating mobile device for registering to, service node in manually connected with the call and calculating mobile device and radio telephone, or a first chosen is a predetermined destination of the user is. The connecting phone network telephone and connected with the data network the voice call between calculating mobile device, service node acts and gateway and invention between the data packet protocol circuit and switching protocol. A operating can be used to manage calling treatment function of mobile calculating device in a mobile device calculating personal information manager.