CONTENTS

�1���� Scope
�2���� References
�3���� Terms and definitions
�4���� Abbreviations
�5���� Conventions
�6���� General aspects
������� 6.1���� ISDN
������� 6.2���� Call control between ISDNs
������� 6.3���� Functionalities of the ISDN
�7���� Specific interworking arrangements
������� 7.1���� Interworking between ISDNs , where a packet switched bearer is requested on each
����������������� 7.1.1���� Transfer of addressing information
����������������� 7.1.2���� Arrangements for facilities related to the QOS of the call
����������������� 7.1.3���� Arrangements for facilities related to charging conditions applying to the call
����������������� 7.1.4���� Arrangements for facilities related to specific routing conditions requested by the user of the call
����������������� 7.1.5���� Arrangements for facilities related to protection mechanisms requested by the user of the call
����������������� 7.1.6���� Arrangements for facilities to convey user data in addition to the normal data flow in the data transfer phase
����������������� 7.1.7���� Arrangements for other facilities
����������������� 7.1.8���� Arrangements for internal network utilities (not visible for users)
������� 7.2���� Interworking between ISDNs where a circuit switched bearer is requested on each
����������������� 7.2.1���� Transfer of addressing information
����������������� 7.2.2���� Arrangements for facilities related to QOS of the call
����������������� 7.2.3���� Arrangements for facilities related to changing conditions applying to the call
����������������� 7.2.4���� Arrangements for facilities related to specific routing conditions requested by the user of the call
����������������� 7.2.5���� Arrangements for facilities related to protection mechanisms requested by the user of a call
���� �������������7.2.6���� Arrangements for facilities to convey user data in addition to the normal data flow in the data transfer phase
����������������� 7.2.7���� Arrangements for other facilities
����������������� 7.2.8���� Arrangements for internal network utilities
������� 7.3���� Interworking between ISDNs where a frame relaying bearer is used on each
����������������� 7.3.1���� Transfer of addressing information
����������������� 7.3.2���� Arrangements for facilities related to QOS of the call
�������� ���������7.3.3���� Arrangements for facilities related to changing conditions applying to the call
����������������� 7.3.4���� Arrangements for facilities related to specific routing conditions requested by the user of the call
����������������� 7.3.5���� Arrangements for facilities related to protection mechanisms requested by the user of a call
����������������� 7.3.6���� Arrangements for facilities to convey user data in addition to the normal data flow in the data transfer phase
����������������� 7.3.7 ����Arrangements for other facilities
����������������� 7.3.8���� Arrangements for internal network utilities
������� 7.4���� Interworking between ISDNs where a packet switched bearer is used on one, and a circuit switched bearer is used on the other
���� �������������7.4.1���� Interworking by call-control mapping
����������������� 7.4.2���� Interworking by port access
������� 7.5���� Interworking between ISDNs, where a packet switched bearer is used on one ISDN, and a frame relaying bearer is used on the other
����������������� 7.5.1���� Interworking by call-control mapping
����������������� 7.5.2���� interworking by port access
������� 7.6���� Interworking between ISDNs, where a circuit switched bearer is used on one ISDN, and a frame relaying bearer is used on the other
����������������� 7.6.1���� Interworking by call-control mapping
����������������� 7.6.2���� Interworking by port access