The Service category for this circuit:
ubr Unspecified bit rate (best effort).
ubrPcr Unspecified Bit Rate with Peak Cell Rate limit.
nrtVbr Non-realtime Variable Bit Rate.
cbr Constant bit rate.
Set the service level in combination of the traffic attributes
PCR/SCR/MBS in the following matrix for successfull configurations.
ServiceLevel PCR SCR MBS
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ubr omit omit omit
ubrPcr must omit omit
nrtVbr must must must
cbr must omit omit