Multiple devices within a data communication network can be configured according to a single configuration profile. The PBX processes including: session initiation protocol processes, application processes, and an interface with signaling process. Process water containing pulp can be treated with a chloramine. At least one encoder module is configured for insertion into a second one of the receptacles and is connectable to a multi-wire path for sending encoded signals and a second power signal along the multi-wire path for selectively energizing one of a plurality of solenoid actuated valves connected to corresponding decoder circuits connected along the multi-wire path. The occasion is related to a communication in the cellular communications network.