Process for the manufacture of 1,2-dichloroethane starting with a hydrocarbon source which is subjected to a cracking thus producing a mixture of cracking products then subjected to treatment steps to obtain a mixture of products containing ethylene. Using an OSS client and various provisioning templates a network manager may interactively provision network services in one or more network devices, in one or more networks, through one or more network management systems. Additional devices and methods are provided for removing tissue from a coronary vessel or the heart wall to establish a flow path between the coronary vessel in communication with the heart chamber. Other embodiments are described and claimed. A switch circuit also in the same container with the transformer has a terminal for sensing either a second signal or a second circuit condition of the remotely located system controller. The network packets are organized into groups based upon sending priority and transmitted to the remote node via a lossy network according to the sending priorities.