PREFACE These technical requirements form a standard for Service Option 1, a variable rate, two-way speech service option. Service Option 1 conforms to the general requirements for service options specified in TIA/ ELA/IS-95 'Mobile Station-Base Station compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System,' and in ANSI J-STD-008 'Personal Station-Base Station Compatibility Requirements for 1.8 to 2.0 Ghz Code Division Multiple Access (CDMA) Personal Communication Systems'. A mobile station operating in wideband spread spectrum (CDMA) mode conforming with TIA/EIA/IS-95 and this standard can obtain speech service in any system conforming with these standards. This standard does not address the quality or reliability of Service Option 1, nor does it cover equipment performance or measurement procedures.