Samsung SCH-A101 Service Manual

Contents

Samsung SCH-A101 Service Manual Manual pdf 3 page image

1. General DescriptionThe SCH-A101 cellular phone functions as digital cellular phone working in CDMA (Code Division MultipleAccess) mode.CDMA type digital mode applies DSSS (Direct Sequential Spread Spectrum) mode which first came to be usedin the military. The DSSS reduces channel cross talk and allow to use one frequency channel by multiple usersin the same specific area, resulting in increase of channel capacity to about ten times compared to that of analogmode currently used.Soft/Softer Handoff, Hard Handoff, and Dynamic RF Power Control technologies are combined into this phoneto reduce the call drop while usage.CDMA digital cellular network consists of MSO (Mobile Switching Office), BSC (Base Station Controller),BTS(Base Station Transmission System), and MS (Mobile Station). MS meets the specifications of the below:• IS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread SpectrumCellular System• IS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems• IS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station• IS-126 : Mobile Station Loopback Service Options StandardSAMSUNG Proprietary-Contents may change without notice1-1