Hello,
Who communicates if ECAM actions are stoped temporarely for after take off checklist reading, for example?
The Pilot flying will announce loudly "stop ecam actions" and then whatever he wants the pnf to do, so read after t/o checklist, turn on engine/wing anti-ice if handflying, etc..
After that he will announce "continue ecam actions".
Ecam discipline requires that all actions are clearly stated by crew members, who has controls, radio, when to start ecam actions and when to stop. E.g On some old Airbus 32x you might have failures that require you to perform a paper checklist instead of ecam actions due to OEB application not included in the FWC. In cases like these procedure initiation only after both FCM are aware of their role is vital.
Dazvidania