A portable winch assembly includes a winch mechanism connected to a support structure adapted to be manually transportable. Transmit power may be defined for an access node such that a corresponding outage created in a cell is limited while still providing an acceptable level of coverage for access terminals associated with the access node. There are two coupling elements that are configured complementary to one another and are assigned to the two arc segments of each lock part. The acceleration apparatus automatically switches from the direct mode to the proxy mode upon detection of a communication error associated with the communication session negotiated by the client and the server. The extension hubs each have a flange ring and an extension core.