A method for data-flow protection of an optical interface in data communication equipment includes: receiving an optical-signal from a source-neighboring device, then duplicating the received optical signal into two duplicated optical signals. The acquiring unit acquires image data of an image to be formed by a recording unit using an inkjet system. The particles are preferably formed by spray drying. The first portion includes at least one OSI compatible layer that is not included in the second portion. Methods of manufacturing the BLIs, and uses of the compounds in the preparation of pharmaceutical compositions and antibacterial applications are also disclosed. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.