Announce card game on Eastlink, perhaps? (10)

I believe the answer is:

tollbridge

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'eastlink perhaps?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'announce card game on' is the wordplay.
'announce' becomes 'toll' (I can't explain this - if you can you should give a lot more credence to this answer).
'card game' becomes 'bridge' (bridge is a kind of card game).
'on' means one lot of letters go next to another.
'toll'+'bridge'='TOLLBRIDGE'

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I've seen this clue in The Irish Times.

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