tokens: ['SSCOP', 'ITUT', 'Rec', 'Q', '', 'and', '', 'AAL', 'ITUT', 'Rec', 'I', '', 'The', 'SSCF', 'maps', 'the', 'requirements', 'of', 'the', 'layer', 'above', 'to', 'the', 'requirements', 'of', 'SSCOP', 'Also', 'SAAL', 'connection', 'management', 'link', 'status', 'and', 'remote', 'processor', 'status', 'mechanisms', 'are', 'provided', 'SSCOP', 'provides', 'mechanisms', 'for', 'the', 'establishment', 'and', 'release', 'of', 'connections', 'and', 'the', 'reliable', 'exchange', 'of', 'signalling', 'information', 'between', 'signalling', 'entities', 'Adapts', 'the', 'upper', 'layer', 'protocol', 'to', 'the', 'requirements', 'of', 'the', 'Lower', 'ATM', 'cells', 'It', 'shall', 'be', 'possible', 'to', 'use', 'SAALNNI', 'connections', 'preconfigured', 'as', 'PVCs', 'for', 'signalling', 'transport', 'on', 'the', 'Iuinterface', '', 'ATM', 'ITUT', 'Rec', 'I', '']