
| U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide | 
 | 
 | |
| 
 | 
 | 
 | 
 | 
| Type | Only data support – NO voice. | ||
| 
 | 
 | 
 | 
 | 
| 
 | Service Type | 
 | Supports  | 
| 
 | cbr Constant Bit Rate | 
 | a fixed amount of bandwidth. These | 
| 
 | 
 | 
 | applications, such as a video stream, | 
| 
 | 
 | 
 | produce data at regular intervals. The user | 
| 
 | 
 | 
 | can specify how much bandwidth that he | 
| 
 | 
 | 
 | wishes to reserve. | 
| 
 | rtvbr Real Time | 
 | Supports  | 
| 
 | Variable Bit Rate | 
 | as voice. Varies the rate at which cells | 
| 
 | 
 | 
 | arrive. | 
| 
 | Nrtvbr Non Real Time | 
 | Supports applications that have no | 
| 
 | 
 | constraints on delay and delay variation, but | |
| 
 | Variable Bit Rate: | 
 | still have  | 
| 
 | 
 | 
 | characteristics. | 
| 
 | Ubr Unspecified Bit | 
 | Best effort service that does not require | 
| 
 | Rate | 
 | tightly constrained delay and delay | 
| 
 | 
 | 
 | variation. UBR provides no specific quality | 
| 
 | 
 | 
 | of service or guaranteed throughput. | 
| 
 | 
 | 
 | 
 | 
file:///P/T_WRITER/Documentation/Released/900...ide/9003%20(Guiness)%20prac%20template/wui.htm (11 of 55) [11/6/2002 8:53:37 AM]
