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Analysis of invoices, lines, rates, tariffs, taxes, plans, usage, call volume, systems, and contracts resulting in cost reduction, proper invoicing and optimization of telecommunication systems often conducted by an independent telecommunications consultant or firm.
An invoice, bill, tab, or bill of costs is a commercial document that includes an itemized list of goods or services furnished by a seller to a buyer relating to a sale transaction, that usually specifies the price and terms of sale., quantities, and agreed-upon prices and terms of sale for products or services the seller had provided the buyer.
A statement of work (SOW) is a document routinely employed in the field of project management.It is the narrative description of a project's work requirement. [1]: 426 It defines project-specific activities, deliverables and timelines for a vendor providing services to the client.
Invoice processing : involves the handling of incoming invoices from arrival to payment. Invoices have many variations and types. In general, invoices are grouped into two types: Invoices associated with a company's internal request or purchase order (PO-based invoices) and; Invoices that do not have an associated request (non-PO invoices).
Accounts receivable represents money owed by entities to the firm on the sale of products or services on credit. In most business entities, accounts receivable is typically executed by generating an invoice and either mailing or electronically delivering it to the customer, who, in turn, must pay it within an established timeframe, called credit terms [citation needed] or payment terms.
For example, consider the accounts payable department when processing an invoice. With an accounting information system, an accounts payable clerk enters the invoice, provided by a vendor, into the system where it is then stored in the database. When goods from the vendor are received, a receipt is created and also entered into the AIS.