Elevator communication system

An elevator communication system, comprising:

• a first elevator controller;
• a second elevator controller;
• a first ethernet bus portion connected to the first elevator controller, the first ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a first switch, wherein the first ethernet bus portion is arranged in a first elevator shaft;
• a second ethernet bus portion connected to the second elevator controller, the second ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a second switch, wherein the second ethernet bus portion is arranged in a second elevator shaft;
• and
• an ethernet bus segment connected between two switches of the first ethernet bus portion,
• wherein the first switch of the first ethernet bus portion and the second switch of the second ethernet bus portion are interconnected to enable data transmission between the switch of the first ethernet bus portion and the switch of the second ethernet bus portion;
• and
• wherein the first elevator controller is communicatively connected to the second elevator controller to enable communication between them in case of a communication failure of the first ethernet bus portion and/or the second ethernet bus portion.

An elevator communication system, comprising:

• a first elevator controller:
• a second elevator controller:
• a first ethernet bus portion connected to the first elevator controller, the first ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a first switch, wherein the first ethernet bus portion is arranged in a first elevator shaft;
• a second ethernet bus portion connected to the second elevator controller, the second ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a second switch, wherein the second ethernet bus portion is arranged in a second elevator shaft;
• and
• further comprising a shared landing segment between the first switch of the first ethernet bus portion and the second switch of the second ethernet bus portion,
• wherein the first switch of the first ethernet bus portion and the second switch of the second ethernet bus portion are interconnected to enable data transmission between the switch of the first ethernet bus portion and the switch of the second ethernet bus portion;
• and
• wherein the first elevator controller is communicatively connected to the second elevator controller to enable communication between them in case of a communication failure of the first ethernet bus portion and/or the second ethernet bus portion.

An elevator communication system, comprising:

• a first elevator controller;
• a second elevator controller;
• a first ethernet bus portion connected to the first elevator controller, the first ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a first switch, wherein the first ethernet bus portion is arranged in a first elevator shaft;
• a second ethernet bus portion connected to the second elevator controller, the second ethernet bus portion comprising sequential bus segments interconnected by at least one switch including a second switch, wherein the second ethernet bus portion is arranged in a second elevator shaft;
• and
• a landing segment connected to at least one of the first switch of the first ethernet bus portion and the second switch of the second ethernet bus portion,
• wherein the first switch of the first ethernet bus portion and the second switch of the second ethernet bus portion are interconnected to enable data transmission between the switch of the first ethernet bus portion and the switch of the second ethernet bus portion;
• wherein the first elevator controller is communicatively connected to the second elevator controller to enable communication between them in case of a communication failure of the first ethernet bus portion and/or the second ethernet bus portion.