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Frequently Asked QuestionsTrango Radio Features
1. What is the difference between the TrangoFOX and the Access5830 subscriber unit? The TrangoFOX SU offers the same throughput and all popular management features of the Access5830 SU. Other than the obvious hardware differences, the TrangoFOX SU differs from the Access5830 SU in the following areas:
2. What is the CIR/MIR and how do I set them? CIR stands for "Committed Information Rate" and MIR stands for "Maximum Information Rate." CIR is the minimum bandwidth to be allocated to a given SU. If there is idle bandwidth available on the AP, any given SU's bandwidth can go as high as its MIR. CIR and MIR are specified at the AP in the subscriber database. 3. If a particular SU has a CIR and the dedicated bandwidth is not being used, can this used bandwidth be diverted to other SUs that have a bandwidth need? Trango Broadband Wireless developed a patented algorithm (U.S. patent 7,127,255) called SMARTPolling™ that breaks up 1 second into much smaller intervals of time and during those intervals checks each SU to see if the CIR is being satisfied. If the CIR is not being used, the unused bandwidth goes into the overall bandwidth pool and other SUs have the opportunity to use this bandwidth. SMARTPolling™ with another feature known as Dynamic RF Packet Sizing allows that optimal use of bandwidth per sector. 4. What is power leveling for? Power leveling is a feature that allows the AP to maintain the same radio signal reception level of multiple SU's regardless of the distance between the AP and each SU. Power leveling is achieved by automatically turning up the power for the units that are farther away from the AP and turning down the power for the units that are closer to the AP. The AP will perform power leveling with all the SU(s) in a sector automatically when they try to associate with it. Manual power leveling is needed after issuing an su restart or su reboot command from the AP. This feature reduces interference between the cells. 5. What are some of the security features of the Access5830 system? The Access5830 system provides inherent security features due to its proprietary design. For a more detailed discussion of data security on the Access5800 and 5830, see the Access5830 AP page. 6. What is the SU channel scan table for? This table consists of a list of channels and the corresponding polarization the SU will try to communicate with the AP(s) after its link with an AP is lost. There is a switch called Auto Scan at the SU to enable/disable this feature. The first channel with polarization in the scan table is used when the SU is powered on. 7. Do we have any features that prevent gamers and heavy users from taking the bulk of the bandwidth? CIR and MIR settings can be used to limit bandwidth to specific subscriber units. 8. Can an SU support multiple Ethernet MAC addresses? Yes. Unlimited 9. What happens if I set my CIR to "0"? You will see 0 throughput and 20.0.0 on the su testrflink results.gn frequency to channel number. 10. Why is it necessary to block or unblock the broadcast packet? Most Ethernet broadcast packets can be blocked from either direction, AP to SU or SU to AP, to reduce the non-payload traffic with the exception of ARP and DHCP packets. This feature is meant to improve network performance. There is a switch called Block Broadcast Packet at both the AP and the SU to enable/disable this feature. The factory default is on. |
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