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Its a good link follow it www.cdg.org/technology/cdma_technology/cdma_milestones.asp

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Posted by HamidAliKhan

Follow the link :
www.cdg.org/technology/cdma_technology/cdma_milestones.asp

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Posted by waqqas1

Hi,
IS-95 B is a complete standard and cant be explained here.In short what i can tell you is it is the enhancement over IS-95A standard and have certain features like.
1.Support of low speed data
2.Dynamic handoff threshold feature- which enables a smooth handoff transition with the variable thresholds and not dependent on just parameters like T_ADD,T_DROP, But obviously these parameters acts as a input to calculate dynamic add and drop margins.

Hope it gives you a brief idea.

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Posted by elexdeepak1