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Event ID: 20139 Source: RemoteAccess

The port <port number> has been disconnected due to inactivity.
Self-explanatory; the Routing and Remote Access Service (RRAS) generates this event when you configure a remote connection for example on port comx to disconnect after some time of inactivity. On RRAS tool, set "idle seconds before hanging up" to 0 to disable the timer.
You have a Demand Dial Interface in the Routing and RAS Admin tool configured for a value other than 0 in Idle seconds before hanging up. See ME177399

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