Crossword Genius

Bug rattles phone company (7)

Ross

I believe the answer is:

telstra

I'm a little stuck... Click here to teach me more about this clue!

'phone company' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'bug rattles' is the wordplay.
'bug' indicates anagramming the letters (I've seen 'bugs' mean this (messes up (as a computer bug))).
'rattles' is an anagram of 'TELSTRA'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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