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The Alliance for Telecommunications Industry Solutions, 12/01/2008
Publisher: ATIS
File Format: PDF
$112.00$224.98
Published:01/12/2008
NPA Allocation Plan and Assignment Guidelines
$143.00 $287.78
Description of Above-Baseline Physical Threats to Telecommunications Links
$140.00 $281.38
$140.00 $281.18
Number Portability Switching Systems
$137.00 $275.00