ITU X.81:1988
ITU X.81:1988 Interworking Between An Isdn Circuit-switched And A Circuit-switched Public Data Network (cspdn)
Table of Contents
0Introduction1Scopeandfieldofapplication
2References
3Definitions
4Abbreviations
5Generalaspects
5.1CSPDN
5.2ISDN(CS)
5.3CallcontrolbetweentheCSPDNandISDN
6Specificationofinterworkingfunctions
6.1Interworkingfunctionsforidenticaldatatransmission
services
6.1.1Physicallinkcharacteristicsandinterworking
functionsassignedtolayer1
6.1.2SupportoftheOSI-NLS
6.1.3Signallingconversion(protocolmapping)
6.1.4Protocolmappingforsupplementaryservices
6.1.5Mappingofservicesignalsandcauses
6.2Interworkingfunctionsfornon-identicaldata
transmissionservices
6.2.1Physicallinkcharacteristicsandinterworking
functionsassignedtolayer1
6.2.2SupportoftheOSI-NLS
6.2.3Signallingconversion(protocolmapping)
6.2.4Protocolmappingforsupplementaryservices
6.2.5Mappingofservicesignalsandcauses
7Operationandmaintenance