Siemens 5890 Manual Do Utilizador

4. Select one of the following Service Types.

Constant Bit Rate:
Requests a static amount of bandwidth that is continuously available for the lifetime of the 
connection.This bandwidth amount is characterized by a Peak Cell Rate value.

Real-Time Variable Bit Rate:
Used for applications that require tightly constrained delay and delay variation, but not necessarily a 
fixed cell rate. VBR-nrt connections are characterized in terms of a Peak Cell Rate, Sustained Cell 
Rate, and a Maximum Burst Size. 

Non Real-Time Variable Bit Rate:
Used for bursty applications that require service guarantees from the network. VBR-rt connections are 
characterized in terms of a Peak Cell Rate, Sustained Cell Rate, and a Maximum Burst Size. Frame 
Relay traffic can also use VBR-nrt.

Unspecified Bit Rate:
Used for non-real-time, bursty applications that are tolerant of delay and loss. UBR service does not 
specify service guarantees and is sometimes referred to as "best effort" service.   

5. In Peak Cell Rate, enter the peak cell rate if you selected an option that requires a peak cell rate value.

6. In Sustained Cell Rate, enter the sustained cell rate if you selected an option that requires a sustained 

cell rate value.

7. In Maximum Burst Size, enter the maximum burst size if you selected an option that requires a maximum 

burst size value.