�1���� General
�2����
Definitions
�3����
Terminal functionality for service interworking
������� 3.1���� ISDN speech terminals
������� 3.2���� ISDN 3.1 kHz audio terminals
������� 3.3���� ISDN terminals that use the bearer capability selection option
�4����
Interworking requirements supporting service interworking
������� 4.1���� Interworking of speech and 3.1 kHz audio services
������� 4.2���� Interworking options for Multi-use bearer service
������� 4.3���� Interworking of group 4 and group 3 facsimile terminals
�5����
Network interworking reguirements supporting the bearer capability
selection
Appendix I � A/μ law conversion and supplementary services
������� I.1���� 7 kHz audio terminals
������� 1.2���� Data/facsimile terminals