In an environmentally hardened network, a data and power distribution cable is employed in connection with reliable end connectors, high performance physical layer transceivers clocked at a lower rate than is specified and full duplex switched packet transmission techniques between switched nodes in order to extend operational distance between network elements. The LED clusters are part of a light array mounted to the forward portion of the helmet. If a specific access terminal has a MAC ID of 128 or higher, the preamble set includes at least one preamble with which the access terminal determines whether the MUP is received. Methods of treatment for reduction of risk of rejection of allografts and xenografts and autoimmune diseases using the human suppressor CD8CD28 T cells so produced are also provides, as are methods of preventing rejection and autoimmune diseases, and vaccines comprising the produced suppressor T cells. If it is decided that the dashed line pattern needs to be divided, an operator group which is descriptive of the dashed line pattern is replaced with a plurality of operator groups which are descriptive of the auxiliary dashed line patterns, respectively. A switchable transverse bridge is producible by each current bar having a second contact section, two further current bar pieces being arranged in the terminal housing, and a recess being formed in a current bar piece for insertion of a branch of a jumper.