considerable cross functionality with ieee 802 pan both are suitable for wireless communication within a vehicle in another embodiment nomadic device 53 includes a modem for voice band or broadband data communication in the data over voice embodiment a technique known as frequency division multiplexing may be implemented when the owner of the nomadic device can talk over the device while data is being transferred at other times when the owner is not using the device the data transfer can use the whole bandwidth 300 hz to 3 4 khz in one example while frequency division multiplexing may be common for analog cellular communication between the vehicle and the internet and is still used it has been largely replaced by hybrids of with code domian multiple access cdma time domain multiple access tdma space domian multiple access sdma for digital cellular communication these are all itu imt 2000 3g compliant standards and offer data rates up to 2 mbs for stationary or walking users and 385 kbs for users in a moving vehicle 3g standards are now being replaced by imt advanced 4g which offers 100 mbs for users in a vehicle and 1 gbs for stationary users if the user has a data plan associated with the nomadic device it is possible that the data plan allows for broad.