rt-VBR - Computer Definition
In asynchronous transfer mode (ATM), a class of traffic that takes place in real time and that requires access to time slots at a rate that can vary significantly from time to time.Traffic parameters include peak cell rate (PCR), cell delay variation tolerance (CDVT), sustainable cell rate (SCR), maximum burst size (MBS), and burst tolerance (BT).The quality of service (QoS) parameter is cell loss ratio (CLR). Real-time compressed audio, voice, and video encoded at variable rates are examples of rt-VBR traffic. ATM also defines available bit rate (ABR), constant bit rate (CBR), non realtime Variable Bit Rate (nrt-VBR), unspecified bit rate (UBR), and variable bit rate (VBR) traffic classes. See also ABR, ATM, BT, CBR, CDVT, compression, MBS, nrt-VBR, PCR, QoS, real-time, SCR, time slot, UBR, and VBR.