
IOS 
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E-Market 
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1 
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IOS   may use private or publicly accessible network. 
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E-Market   may use publicly accessible network. 
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2 
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Customer   supplier relationship is determined in advance. It is expected that it is   ongoing relationship for multiple transaction. 
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Two   types of relationship (i) Customer to seller linkage is established at time   of transaction for one time only.    (ii) Customer seller linkage is established for a fixed time period. 
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3 
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Agreements   on nature and format of business document. 
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Sellers   market maker determine which transaction they will provide. 
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4 
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Advance   arrangements are made so that both parties know which communication network   will be used for system 
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Customer   and seller independently determine which communication network they will use. 
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5 
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Joint   guidelines are formulated so that each party will know how system is used. 
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No   joint guideline are formulated in advance. 
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