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U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide |
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Type | Only data support – NO voice. | ||
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| Service Type |
| Supports |
| cbr Constant Bit Rate |
| a fixed amount of bandwidth. These |
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| applications, such as a video stream, |
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| produce data at regular intervals. The user |
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| can specify how much bandwidth that he |
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| wishes to reserve. |
| rtvbr Real Time |
| Supports |
| Variable Bit Rate |
| as voice. Varies the rate at which cells |
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| arrive. |
| Nrtvbr Non Real Time |
| Supports applications that have no |
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| constraints on delay and delay variation, but | |
| Variable Bit Rate: |
| still have |
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| characteristics. |
| Ubr Unspecified Bit |
| Best effort service that does not require |
| Rate |
| tightly constrained delay and delay |
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| variation. UBR provides no specific quality |
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| of service or guaranteed throughput. |
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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]