Abstract: A method for improved automatic message accounting in telephony systems and the like, wherein actual call routing set-up is stored at the time of a call being answered by a called subscriber station; and the data conveying the actual call routing set-up is packaged in a data field of a message for upstream transmission through the actual call routes.

Abstract: To provide station number portability within a cluster of switches interconnected in a communication switching network each switch within the cluster is provided with two translation tables stored in the main memory of the switch processor. When digits are dialled to connect a station with another station the office code of the dialled station is extracted and if this is an office code of any switch in the cluster the first translation table instructs that a translation be carried out in the second table. The second table contains all the station numbers which are in the cluster and relates these numbers either to a physical line or to an instruction to route to another switch. When a station is "ported" i.e., physically disconnected from one switch and reconnected to another switch, a minor change is made to the second translation table of the two switches to retain portability.

Abstract: A method and an apparatus for burning combustible gases contained in a mixture comprised of the combustible gases and a liquid. The apparatus comprises: a separator, having an upper end and a lower end. A first portion of the gases is directed out of the upper end and the liquid and a second portion of the gases are directed out of the lower end; an inlet; and a burner which communicates with the upper end such that the first portion contacts the burner for combustion and the combustion creates a vacuum effect which produces an air current outside of the separator from the lower end to the burner. The lower end communicates with the air current such that the second portion is drawn by the air current to the burner.