Manual for 0838 - Troubleshooting and error codes + PDF Download

External communications: When the entrance bell rings, lift the handset to communicate with the outside.

Internal communications: Lift the handset and press the call button corresponding to the interphone you want to communicate with. The external unit is automatically excluded.

External call during internal communication: If an external call comes in during an internal communication, hang up both handsets and then lift one handset again to answer the external call. The external unit will be automatically included.