FIELD: telecommunication. SUBSTANCE: device has memory unit in which each virtual channel for information transmission of messages is mapped onto position in memory with context which determines conditions for assessing through-put capacity of this virtual channel when each new message arrives, reading context of virtual channel which message belongs to in order to assess through-put capacity of this virtual channel. In addition device has clock for generation of current time for this virtual channel. Indication about initiating time is recorded in context of virtual channel. When new message arrives, context is read and initiating time provided by context is subtracted from current time provided by clock. Time difference serves for detection of value of through-put capacity of virtual channel. EFFECT: increased functional capabilities. 21 cl, 13 dwg
