Published Date: 01/01/1993

OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY

$6

Published Date: 01/01/1989

OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY

Published Date: 01/01/1992

TASACIÓN Y CONTABILIDAD DE LAS COMUNICACIONES CONFERENCIA

$6

Published Date: 03/01/1999

Punto de vista de la empresa para la gestión de enlaces proporcionados previamente

$7.8

Published Date: 03/01/1998

Transporte de señales MPEG-2 en redes de la jerarquía digital síncrona

$12.3

Published Date: 08/02/2013

$82.8

Published Date: 09/04/2018

$105

Published Date: 01/01/2019

$225

Published Date: 01/01/2019

$111

Published Date: 11/29/2013

$82.8

Published Date: 11/29/2013

$82.8

ITU-T D.151 PDF

OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY