This read-write integer sets the Transient Buffer Exposure (TBE) parameter, in cells, for a standard ABR connection, representing the maximum number of cells the source is permitted to send before receiving feedback, which the connection's buffering must be able to absorb. Admins tune this ABR traffic-management parameter as part of implementing TM4.0-compliant flow control on this connection, balancing responsiveness to congestion feedback against upfront burst allowance. For example, a higher ausmStdABRTBE lets the ABR source send more cells before its first rate-feedback response is required, which needs correspondingly adequate buffering downstream.