Patent ID: 9197339
Filing Date: 2015-11-24
Classification: H04J,H04L,H04R

Abstract:
1. A router for an evacuation system comprising: A first router input/output module comprising a first pair of router terminals for connecting a first signalling line; A second router input/output module comprising a second pair of router terminals for connecting a second signalling line; A first router modem connected to the first router input/output module via a first coupling, A first router modem connected to the first router input/output module via a first coupling, wherein the first coupling comprises a first primary connection connected to the first pair of terminals and a first secondary connection connected to the first router modem, wherein the first primary connection being galvanically separated from the first secondary connection; A second router modem connected to the second router input/output module via a second coupling, wherein the second coupling comprises a second primary connection connected to the second pair of terminals and a second secondary connection connected to the second router modem, wherein the second primary connection being galvanically separated from the second secondary connection; A router processing unit connected to the first router modem and the second router modem for communicating data via the first router modem and the second router modem, the router processing unit being arranged to: A router power monitoring unit for monitoring a first voltage level over the first pair of router terminals and a second voltage level over the second pair of router terminals, Wherein: The first coupling is configured to enable the first router modem to receive a data signal available on the first signalling line that is filtered from a supply signal; and The second coupling is configured to enable the second router modem to receive a data signal available on the second signalling line that is filtered from a supply signal.