tokens: ['', 'Test', 'Purpose', 'TP', '', 'with', '', 'UE', 'being', 'registered', 'to', 'IMS', '', 'ensure', 'that', '', 'when', '', 'UE', 'is', 'made', 'to', 'activate', 'incoming', 'communication', 'barring', 'for', 'all', 'calls', 'ICB', '', 'then', '', 'UE', 'authenticates', 'itself', 'using', 'GBA', 'or', 'Digest', '', '', '', 'with', '', 'UE', 'having', 'started', 'authentication', '', 'ensure', 'that', '', 'when', '', 'UE', 'receives', '', 'OK', 'concluding', 'the', 'authentication', '', 'then', '', 'UE', 'sends', 'HTTP', 'request', 'to', 'activate', 'ICB', '', '', '', 'with', '', 'UE', 'having', 'concluded', 'activation', 'of', 'ICB', '', 'ensure', 'that', '', 'when', '', 'UE', 'is', 'made', 'to', 'deactivate', 'ICB', '', 'then', '', 'UE', 'sends', 'HTTP', 'request', 'to', 'deactivate', 'ICB', '', '', '', 'Conformance', 'Requirements', 'The', 'conformance', 'requirements', 'covered', 'in', 'the', 'present', 'test', 'case', 'are', 'unless', 'otherwise', 'stated', 'Rel', 'requirements', 'TS', '', 'clause', '', 'The', 'following', 'conditions', 'are', 'allowed', 'by', 'the', 'XML', 'Schema', 'for', 'the', 'communication', 'barring', 'service', 'presencestatus', 'This', 'condition', 'evaluates', 'to', 'true', 'when', 'the', 'called', 'users', 'current', 'presence', 'activity', 'status', 'is', 'equal', 'to', 'the', 'value', 'set', 'for', 'this', 'condition', 'In', 'all', 'other', 'cases', 'the', 'condition']