1
General
2
Scope
3
Abbreviations
4
Interworking configuration and network characteristics
4.1 Interworking configurations
4.2 Key ISDN and PSTN characteristics and related interworking
functions
5
ISDN bearer services suitable
for ISDN-PSTN interworking
5.1 ISDN bearer services suitable for ISDN to PSTN interworking
(circuit)
5.2 ISDN bearer services suitable for PSTN to ISDN interworking
(circuit)
5.3 ISDN bearer services suitable for ISDN to PSTN interworking
(packet)
5.4 ISDN bearer services suitable for PSTN to ISDN interworking
(packet)
6
Connection type suitable for ISDN-PSTN interworking
7
Functional requirements for ISDN-PSTN interworking
7.1 Interworking between signalling systems
7.2 Provision of interworking indications
7.3 Generation of in-band tones and announcements
7.4 Handling of non-voice calls between ISDN and PSTN subscribers
7.5 Control of speech
processing and echo control devices
7.6 A/m law encoding
8
Handling of packet mode calls between ISDN and PSTN subscribers