The use of cellular systems gives some problems, such as those that arise if the user changes cell while talking. AMPS provides and manages to keep this communication as long as there are active channels in the cell in which it enters. This transfer cell (in English called handoff) is based on analyzing the signal strength emitted by the cellphone and received at different base stations and is coordinated by the MTSO. China Blocks Depends on how you can be shut down communication for about 300 ms immediately after the resumption or may be completely negligible for the user.
AMPS uses 832 channels double, consisting of 832 downhill simple and easy to climb 832, each with a bandwidth of 30KHz, 200kHz compared to systems such as GSM. The frequency band used ranges from 824 to 849 MHz transmission channels and 869 to 894 Mhz for channels of reception. Not all channels used for communication between users, but there are also channels for control, channel assignment to talk and to warn of incoming calls.
AMPS owned the first generation of mobile telephony to have the ability to switch between radiobases in remote areas without losing the connection.

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