Number Plan Management and Analysis
Whereas markets in commodities such as pork bellies or oil have agreed definitions and arbitrating bodies for the commodities they trade, the carrier-carrier market has no agreed definitions of its destinations. Every carrier uses the International Telecommunication Union E.164 standard for country codes, but each carrier uses different codes for destinations within a country, usually because it is using different suppliers within that country. So one carrier's codes for Cali may not be the same as another's. This applies especially to mobile operators. While the difference in price between a call to a land-line and a call to a mobile may not seem much at 9 UK pence, the volumes can be one hundred thousand minutes a day or more, leading to losses of over £250,000 a month. When a carrier's dial code table can contain three thousand items, comparing codes is a critical and complex part of the process. The theory of dial code relationships actually involves the mathematical theory of lattices and code comparisons have to be done with computer software.
Number plan management monitors changes in suppliers' dial codes and adds or removes codes from the company's own code tables to improve costs. Implementing the changes across the company's switches, billing systems, calling card and other IN platforms is a significant task for the engineering and billing departments.
Read more about this topic: Least-cost Routing
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