Dynamix UM-A User Manual page 57

B. Example: VBR-nrt :
This example is provided to further explain the dynamics of VBR-nrt. A PVC has a service
category of VBR-nrt with the following parameters:
1. PCR = 400 kbps
2. SCR = 100 kbps
3. MBS = 22 cells (Note that 22 cells * 48 bytes/cell = 1056 bytes)
If the PVC has been idle for a while (meaning it has accumulated a MBS of 22 cells), and it just has
two packets of the same size (1000 bytes) to send. It can transmit the first packet of size (1000 bytes) in
20ms: (1000 bytes * 8bit/byte / 4000kbps). Immediately after the first second packet is transmit, it will
take about 80ms to transmit the second packet because the PVC can only transmit the second packet at
SCR (100kbps).
Click "Save Setting" after configuration/setting to activate your ADSL Router.
4/1 Port ADSL Router P 56