For those interested in the various aircraft systems for PA (public address) and aircraft status system for aircrew, I found this interesting training doc PDF online [1] for the A320/321.
I have been looking at section "03-010 CABIN INTERCOMMUNICATION DATA SYSTEM"
It does not mention the "medical intercom jacks" in overhead bins that are mentioned at the end of the article
It does not mention the "medical intercom jacks" in overhead bins that are mentioned at the end of the article
[1]:https://caisatech.net/uploads/XXI_3_AIRBUS_H51_A320_O_CCOM_R...