�1���� Introduction
�2����
Requirements of networks served by the signalling connection
�3����
HSRC components for link-by-link signalling
������� 3.1���� General
������� 3.2���� International component of HSRC
������� 3.3���� National components of HSRC
�4����
Overall signalling delay for link-by-link signalling
�5����
HSRCcomponents for end-to-end signalling
������� 5.1���� General
������� 5.2���� International component of HSRC
������� 5.3���� National components of HSRC
�6����
Overall signalling delay for end-to-end signalling
�7����
Influence of new SS No. 7 applications
������� 7.1���� Effects of database queries
������� 7.2���� Effects of message length and other variables
�8����
Remarks
Annex A � Database query considerations
������� A.1��� �General
������� A.2���� Delay formulae
������� A.3���� Application
������� A.4���� Reduction in User-Part delay allowance
References