An alphanumeric keyboard connects to a telephone line and is operable in two operating modes. The method comprises the following steps: first, producing bores in the base of the brake cylinder that have a smaller diameter than the diameter of the fastener screw. Control plane modules may be supplied with data from standardized sensors, and required to generate standardized resource configuration requests responsive to solicitations with specified response latencies. This configuration can provide a thinner semiconductor package since wire-bonding is not used.