Billion BiPAC 7700N User Manual page 48

UBR with PCR/ CBR(Constant Bit Rate)
UBR is a kind of service providing constant rate service, is idea for timely and fixed bandwidth
needed service.
Peak Cell Rate: enter Peak Cell Rate.
Non Realtime VBR/ Realtime VBR(Variable Bit Rate)
VBR is a kind of service providing some assurance about latency and bit loss rate and is often
associated with video and time sensitive service. NR-VBR allows more time delay to R-VBR.
Enter Peak Cell Rate, Sustainable Cell Rate and Maximum Burst Rate.
Click Apply to apply the WAN interface.
Check the remove checkbox, then press Remove to delete it only if this interface are not used by a
WAN Service, if it is used by a WAN service, first remove the WAN service, then turn back to remove
the interface.
Don't feel confused, it will remind you by the following prompt window.
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