Cellular telephone systems with support for converting voice calls to data sessions

摘要

Wireless electronic devices such as cellular telephones may communicate with computing equipment such as servers over a network. Voice telephone calls may be routed over voice links in a voice network and data may be conveyed over data links in a data network. The voice network may be formed using the public switched telephone network. The data network may be formed using the Internet. Cellular base stations may form wireless links with the wireless devices. A server may store information on the current internet protocol address of a wireless device user. The user may place a voice telephone call to an organization. In response to receiving the voice telephone call, a server may automatically transmit information such as web pages or other data that includes interactive on-screen options to the wireless device using the current internet protocol address of the device.