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The Alliance for Telecommunications Industry Solutions, 07/01/1991
Publisher: ATIS
File Format: PDF
$116.00$233.23
Published:01/07/1991
Pages:99
555 NXX Assignment Guidelines
$110.00 $221.90
Carrier Identification Code (CIC) Assignment Guidelines
$123.00 $246.88
Vertical Service Code Assignment Guidelines
$120.00 $240.07
Personal Communications Services (PCS) 5YY NXX Code Assignment guidelines
$118.00 $236.01