User Guide | VersaLink™ Gateway (Model 327W) | |
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| preamble algorithm is used. Otherwise, the long preamble algorithm is used. |
| Slot Time Algorithm | Factory Default = Local STA’s |
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| Possible Response: |
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| Always Off: Transmissions are done using a 20 usec slot time. |
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| Always ON: Transmissions are done using a usec slot time (SST). |
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| Local STA’s: If all associated stations support SST, then the 9 usec slot time is |
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| used. Otherwise, the 20 uses slot time is used. |
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| Enhanced Dynamic: Similar to Local STA’s, with the following extension: If |
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| associated stations that do not support SST do not transmit for a period of time, the |
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| 9 usec slot time is used. |
| PBCC Algorithm | Factory Default = Enhanced Dynamic |
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| Possible Response: |
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| Always Off: PBCC is not used, operation at 22 Mbps is not possible. |
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| Always ON: PBCC is used. |
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| Local STA’s: If all associated stations support PBCC, then PBCC is used. |
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| Otherwise, PBCC is not used. |
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| Dynamic: Similar to local STA’s with the following extension: PBCC setting is |
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| also dependent on Beacon frames from overlapping BSS. If Beacon frames are |
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| received that do not support PBCC, then PBCC is not used. |
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| Enhanced Dynamic: Similar to Dynamic with the following extension: If associated |
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| stations that do not support PBCC do not transmit for a period of time, then PBCC |
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| is not used. |
| ERP Protection Algorithm | Factory Default = Dynamic |
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| Possible Response: |
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| Always Off: ERP is not used |
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| Always ON: ERP is used. |
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| Local STA’s: If there are any associated stations than do not support ERP, a |
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| protection algorithm is used to prevent contention. |
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| Dynamic: Similar to local STA’s with the following extension: The ERP protection |
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| setting is also dependent on Beacon frames from overlapping BSS. IF Beacon |
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| frames are received that indicate ERP is not supported, then a protection algorithm |
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| is used. |
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| Enhanced Dynamic: Similar to Dynamic with the following extension: If associated |
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| stations that do not support ERP do not transmit for a period of time, then |
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| protection algorithm is not used. |
| Rate Adaptation | Factory Default = Enable |
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| If disabled, the highest rate shared between VersaLink and STA is used for each |
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| transmission. |
| Rate Fallback | Factory Default = After 1 Retry |
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| The number of retries to attempt before falling back to the next lower rate. If |
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| Fallback is disabled, the starting rate is the only rate tried. IF Rate Adaptation is |
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| also disabled, the maximum rate shared with the STA is always the starting rate |
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| and the only rate tried. This may not work in noisy environments, and will reduce |
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| roaming distances. |
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| Possible Response: After 1 Retry/ Disable/ After 1 Retry/ After 2 Retry |
| 802.11b Rates (Mbps) | These are the allowable communication rates that VersaLink will attempt to use. |
| 802.11g Rates (Mbps) | The rates are also broadcast within the connection protocol as the rates supported |
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| by VersaLink. |
| 68 | October 2006 |
