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The Alliance for Telecommunications Industry Solutions, 03/01/1992
Publisher: ATIS
File Format: PDF
$110.00$220.72
Published:01/03/1992
Vertical Service Code Assignment Guidelines
$144.00 $288.92
Central Office Code (NXX) Assignment Guidelines (COCAG)
$132.00 $265.45
555 NXX Assignment Guidelines
$115.00 $231.97
P-ANI Administration Guidelines
$110.00 $221.57