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ITU-T Q.611 (11/1980)

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Procédures logiques pour le système de signalisation n º 4 en arrivée
Citation: https://handle.itu.int/11.1002/1000/8263
Series title: Q series: Switching and signalling, and associated measurements and tests
  Q.600-Q.699: Interworking of Signalling Systems
  Q.610-Q.697: Logic procedures
Approval date: 1980-11-21
Approval process:WTSA
Status: Superseded
Maintenance responsibility: ITU-T Study Group 11
Further details: Patent statement(s)