Abstract: A plowing system is removably mountable onto a vehicle in order to provide the vehicle with lateral plowing capability along a given lateral range of the vehicle. The plowing system includes a mounting assembly, a plowing assembly and corresponding plowing component. The plowing system also has associated first and second actuating assemblies cooperable with one another so as to selectively operate the plowing component between retracted and deployed configurations, and so as to provide the plowing system and associated plowing assembly and corresponding plowing component with an increased plowing resistivity within the lateral range of the vehicle, due to a combined effect of the first and second actuating assemblies. A corresponding vehicle is provided with such a plowing system.

Abstract: An "Intelligent" telecommunications network comprises a plurality of switching units interconnected by links and connected to a central computer unit by a data communication system. For dynamic routing of a call, a first switching unit responds to a destination address in a call to attempt a direct link to a neighboring switching unit and, in the event that the attempt is unsuccessful, issues to the central computer unit a message containing the destination address. The central computer unit uses the destination address to identify the unsuccessful link; (ii) updates a routing database to identify the link as unavailable; (iii) determines an alternative route for the call using a tandem node and (iv) compiles a return message including a network address for a tandem switching unit and transmits it to the first switching unit. The latter attempts to route the call via a link to the tandem unit which attempts to complete the call by a direct link to the destination switching unit.