I think, then, you would say the following: "When I have called you, at the second or third ring, then you come here and wait. Donīt answer the phone, just let it ring (when you see it was me that called)."
Or "Be here when I call you, but donīt asnwer when you see itīs me, just be/come here."
Something like that. Letīs wait a mored advanced learner or native/teacher clear up our doubt.
The "two or three rings" would be a signal, this way one wouldnīt think the people put the call by sheer accident.
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