Of necessity@ this guideline is general and should be adapted for use by each company. The following sections provide considerations that may or may not be appropriate for each manufacturer or customer situation. Since U.P.C./EAN identifiers can be used for both products and services@ references hereafter to products should be considered to include services as well. Purpose The purpose of this guideline is to provide a general approach for implementation of the UCC/EAN numbering system by a telecommunications company@ whether the company is considered a manufacturer of telecommunications products or services or one of their customers.