Alvarion breezeaccess vl manual

These frequencies are marked in the database as Adjacent to Radar, and will be treated the same as Radar Detected frequencies. Operation and Administration Chapter 4 - Operation and Administration Before ceasing transmission on the frequency where radar signals had been detected, the AU sends a special disassociation message to its associated SUs.

This message includes an indication whether the SUs should wait for this AU. If the SUs should wait, the message includes also the waiting time. During this time each SU searches for the AU in the defined frequencies subset. If the AU was not found within the waiting time, or if a waiting request was not included in the message, the SU starts searching for any AU, using the Best AU mechanism if applicable.

Typically, operators prefer to preserve the original frequency planning and to avoid moving to a new channel unless they are sure that there is a continuous radar activity in the original channel. It should be noted that detection of radar activity does not necessarily indicate a continuous radar activity in the channel. A channel reuse algorithm enables returning to the original channel under certain conditions that indicates low radar activity on the channel.

The range depends on the number of Sub-Bands supported by the country code. The default selection is Sub-Band 1. The range depends on the selected Sub-Band. The default is the lowest frequency in the Sub-Band. NOTE 1 Japan 4. The DFS Parameters submenu includes the following parameters: 4. The options are Yes or No. Selection of the No option will disable the radar detection and dynamic frequency selection mechanism. The default is Yes. The available frequencies according to the SubBand are displayed, and each of the frequencies in the list is associated with an index.

The default is the complete list of frequencies available in the Sub-Band. During this time the AU does not transmit. The range is 1 to seconds. The default is 60 seconds. These frequencies will not be used when searching for a new frequency. The range is 1 to 60 minutes. The default is 30 minutes. The message includes also the time period during which the SU should not search for any other AU. The waiting time is the Channel Check Time plus 5 seconds. The range is from 1 to pulses.

In addition, the AU will start operation using its default frequency. When the Channel Reuse Option is enabled, then by the end of the Channel Avoidance Period the unit will attempt returning to the original frequency, provided these conditions are met.

Radar Activity Assessment Period: The period in hours used for assessment of radar activity in the original channel. The range is 1 to 12 hours. The default is 5 hours. Maximum Number of Detections in Assessment Period: The maximum number of radar detections in the original channel during the Radar Activity Assessment Period that is required for reaching a decision to try again the original channel.

The range is 1 to 10 radar detections. The default is 5 radar detections. The current defined frequency subset as well as the defined subset to be used after the next reset are also displayed. In addition, all the applicable frequencies will be displayed together with their status in the database Radar Free, Radar Detected or Adjacent to Radar. The AU advertises its country code in every beacon and association response message.

Upon synchronization the SU will check if its country code and the country code received from the AU are the same. TX Power will be set to the maximum defined by the country code. The Modulation Level will be set to the maximum modulation level defined by the country code. The Multicast Modulation Level will be set to the minimum modulation level defined by the country code.

The Burst Mode will be set to enable if the country code supports burst mode, and the burst duration will be set to default.

After country code learning adaptation the unit is automatically reset. Before this automatic reset, if the unit is running from the shadow version, the versions must be swapped and the running version must be set as main. This is done to avoid returning to the previous version, which occurs automatically after the reset.

It has no affect on the frequencies to be used during regular operation, which are defined using the User Defined Frequency Subsets menu described below. The default selection is Sub-Band 1 4. For each available Sub-Band, the available frequencies are displayed, and an index is associated with each frequency. The default is all frequencies in all available sub-bands. The topology of a fixed access network is constantly changing.

Changes in base station deployment and subscriber density can accumulate to create substantial changes in SU performance. The quest for load sharing together with the desire to create best throughput conditions for the SU created the need for the Best AU feature, to enable an SU to connect to the best AU in its neighborhood.

The SU scans for a configured number of cycles, gathering information from all the AUs with which it can communicate.

At the end of the scanning period, the SU reaches a Best AU decision according to the information gathered. The quality mark given to each AU depends on the level at which it is received by the SU. Note also that the decision is made only once during the scanning interval.

The decision may not remain the optimal one for ever. If there are significant changes in deployment of neighboring AUs and the SUs served by them, overall performance may be improved if the applicable SUs are reset intentionally so as to re-initiate the Best AU decision process.

The Best AU Parameters menu includes the following options: 4. The Number of Scanning Attempts parameter defines the number of times that the process will be repeated for all relevant frequencies. A higher number may result in a better decision at the cost of an increased scanning time during which the SU is not operational.

Valid values: 1 - Default value: 4. Gaining control of the SUs association is a powerful tool in network management. Valid values: A MAC address string. Full - The association load status of the AU. It is defined as full if the number of SUs associated with the AU has reached the maximum allowed according to the value of the Maximum Number of Associations parameter.

An AU whose associations load status is full cannot be selected as the Best AU, even if its computed mark is the highest.

The disassociation period, which is the time from the moment the link was lost until the SU decides that it should start searching for another AU, is approximately seven seconds. Operation and Administration Chapter 4 - Operation and Administration In some situations when there is a high probability that SUs might need to roam among different AUs, the use of active scanning enables to significantly reduce the link establishment time.

This is achieved by using shorter dwell periods, transmitting a Probe Request at each frequency. This reduces the time spent at each frequency as well as the disassociation period. The default selection is Passive. This is achieved by automatically adjusting the power level transmitted by each SU according to the actual level at which it is received by the AU.

To support proper operation of the system with optimal performance and minimum interference between neighboring sectors, the ATPC algorithm should be enabled in all units. The algorithm is controlled by the AU that calculates for each received frame the average SNR at which it receives transmissions from the specific SU. The average calculation takes into account the previous calculated average, thus reducing the effect of short temporary changes in link conditions.

The weight of history the previous value in the formula used for calculating the average SNR is determined by a configurable parameter. In addition, the higher the time that has passed since the last calculation, the lower the impact of history on the calculated average.

The target is that each SU will be received at an optimal level, or as high or low as possible if the optimal range cannot be reached because of specific link conditions. Each time that the SU tries to associate with the AU following either a reset or loss of synchronization , it will initiate transmissions using its Transmit Power parameters. If after a certain time the SU does not succeed to synchronize with the AU, it will start increasing the transmit power level.

In an AU the maximum supported transmit power is typically used to provide maximum coverage. However, there may be a need to decrease the transmitted power level in order to support relatively small cells and to minimize the interference with the operation of neighboring cells, or for compliance with local regulatory requirements. In some cases the maximum transmit power of the SU should be limited to ensure compliance with applicable regulations or for other reasons.

Different power levels may be used for different modulation levels by taking into account possible HW limitations or regulatory restrictions. If the ATPC Option is enabled, the value configured for this parameter serves for setting the initial value to be used by the ATPC algorithm after either power up or losing synchronization with the AU. The unit calculates the maximum allowed Transmit Power according to the unit properties and parameters listed above, and displays the allowed range when a Transmit Power parameter is selected.

For each modulation level, the unit will use as transmit power the minimum between this parameter and the maximum Tx power allowed by the HW and the Country Code for the specific modulation level. The default Transmit Power is the highest allowed value.

It also sets the upper limits for the Transmit Power parameters. The minimum value for the Maximum Tx Power is dBm. The unit calculates the maximum allowed Maximum Tx Power according to the unit properties and parameters listed above, and displays the allowed range when the Maximum Tx Power parameter is selected.

For each modulation level, the unit will use as maximum transmit power the minimum between this parameter and the maximum Tx power allowed by the HW and the Country Code for the specific modulation level. The default Maximum Tx Power is the highest allowed value. Available values: 4 to 60 dB. Default value: 28 dB. Available values: 4 to 20 dB. Default value: 5 dB for units operating in the 5. Setting a low value for this parameter may lead to higher overhead and to an excessive rate of power level changes at the SUs.

High values for this parameter increase the time it will take the SUs to reach optimal transmit power level. Available values: 1 to seconds. Default value: 30 seconds. The parameter takes effect immediately. However, when changed from Enable to Disable, the transmit power level will remain at the last Current Transmit Power determined by the ATPC algorithm before it was disabled.

It will change to the value configured for the Initial Transmit Power parameter only after the next reset or following loss of synchronization. At these levels the use of ATPC may cause significant fluctuations in the power level of the transmitted signal. This feature can be used during maintenance or testing to avoid transmissions using undesired parameters.

The parameter is available only when managing the unit from its Ethernet port. The default is On. The configured gain should take into account the attenuation of the cable connecting the antenna to the unit.

The range is 0 — 50 dB. The default value depends on unit type. In SUs with integral antenna it is set to 21 read only. To ensure appropriate services to all SUs regardless of their distance from the AU while maintaining a high overall performance level, two parameters should be adapted to the distances of SUs from the serving AU: The time that a unit waits for a response message before retransmission ACK timeout should take into account the round trip propagation delay between the AU and the SU The one-way propagation delay at 5 GHz is 3.

To ensure fairness in the contention back-off algorithm between SUs located at different distances from the AU, the size of the time slot should also take into account the one-way propagation delay.

The size of the time slot of all units in the cell should be proportional to the distance from the AU of the farthest SU served by it. When set to Automatic, the AU uses a special algorithm to estimate its distance from each of the SUs it serves, determine which SU is located the farthest and use the estimated distance of the farthest SU as the maximum cell distance.

The value of the maximum cell distance parameter either computed or configured manually Operation and Administration Chapter 4 - Operation and Administration is transmitted in the beacon messages to all SUs served by the AU, and is used by all units to calculate the size of the time slot, that must be the same for all units in the same sector.

It should be noted that if the size of the time slot used by all units is adapted to the distance of the farthest unit, then no unit will have an advantage when competing for services.

However, this reduces the overall achievable throughput of the cell. In certain situations, the operator may decide to improve the overall throughput by reducing the slot size below the value required for full fairness.

This means that when there is competition for bandwidth, the back-off algorithm will give an advantage to SUs that are located closer to the AU.

The Cell Distance Parameters menu includes the following parameters: 4. The Options are Automatic or Manual. The default is Automatic. The range is 0 to 54 Km. The value of 0 has a special meaning for No Compensation: Acknowledge Time Out is set to a value representing the maximum distance of 54 km. The time slot size is set to its minimal value of 9 microseconds.

The default is 0 No Compensation. When this feature is disabled, all SUs in the cell use for the calculation of the ACK timeout the maximum cell distance; when enabled, each SU uses instead its actual distance from the AU. The options are Disable or Enable. A distance of 1 km means any distance below 2 km.

This is the time during which the unit determines whether the medium is idle using the carrier sense mechanism. The value of SIFS is 16 microseconds. If the unit decides that the medium is not free, it will defer transmission by DIFS plus a number of time slots as determined by the Contention Window back-off algorithm see section 4.

Typically, AIFS should be configured to two time slots. A value of 1 should only be used in one of the two units in a point-to-point link, where in the other unit the AIFS remains configured to two time slots. This ensures that the unit with AIFS configured to one has an advantage over the other unit, provided that the Minimum Contention Window section 4. The available options are 1 or 2 time slots. The default is 2 time slots. Otherwise the default value of 2 must always be used.

In a pointto-point link, only one unit should be configured to an AIFS value of 1. In this case, the Minimum Contention Window parameter in both units must be configured to 0 to disable the contention window back-off algorithm.

The number displayed for the Maximum Number of Associations is the value configured for this parameter, which might be higher than the actual limit. Therefore, the database of associated SUs may include units no longer associated with the AU. To delete inactive SUs from the database you must reset the AU. Upon synchronization the SU shall check if its country code and the country code received from the AU are the same. TX Power per modulation level will be set to the maximum defined by the country code.

Operation and Administration Chapter 4 - Operation and Administration The Multicast Modulation Level will be set to the minimum modulation level defined by the country code. In order to gain information regarding noise characteristics in the location of the unit, the unit will enter passive scanning mode for a definite period, during which information will be gathered.

The scanned channels will be all the frequencies included in the selected sub-band. Upon activating the spectrum analysis the unit will automatically reset. During the information-gathering period the unit will not receive nor transmit data. During the spectrum analysis period the unit security mode is changed to promiscuous to enable gathering information regarding all legal frames received by the unit.

At the end of the period the unit will reset automatically regaining normal operability upon start up. The Spectrum Analysis submenu includes the following options: 4.

Range: seconds. Default value: 5 seconds. Range: cycles. Default value: 2 cycles. The selection is per analysis: when the analysis is completed it will be disabled automatically. Upon activation, the unit will reset automatically and start-up in spectrum analysis mode. The displayed information includes the following details for each channel: Frequency in MHz Signal Count: The number of signals excluding OFDM frames with the correct bandwidth in the channel.

Signal Width: The average width in microseconds of signals excluding OFDM frames with the correct bandwidth in the channel. It enables viewing the continuously updated results of the current analysis process. The displayed information includes the same details available for a regular Spectrum Analysis Information Display option. The Lost Beacons Transmission Threshold parameter represents the number of consecutive lost beacons after which the unit will reset itself. The range for this parameter is — or 0.

When the parameter is set to 0, this feature is disabled, i. The default value is This feature is useful during configuration changes, enabling to force the SU s to re-initiate the association process, including the search for the best AU or a preferred AU using the Best AU process, without performing a full reset. This ANI mechanism is triggered by the rate of detected Physical Errors and it is modifying different thresholds affecting the immunity to specific interference types.

This feature, active by default, exists in all units with HW revision C and higher running SW version 3. Starting in SW version 4. When using version 4. As a result, the ANI mechanism triggered by the number of received error packets may not function properly in certain scenarios, resulting in link performances that are far below the expectations.

The option of manually controlling the various parameters used by the ANI mechanism enables to achieve optimal performance in certain deployments where the automatic ANI mechanism may not function properly. It is strongly recommended to consult with Alvarion experts before switching to manual mode and modifying any of the parameters. In the AU, try switching to Manual mode if overall throughput is too low or if SUs are lost although communication conditions are sufficient for good connectivity.

In many deployments the transition to Manual mode is sufficient. The target is to reduce the amount of Phy Error rate reported by the unit see Total Rx events on page To ensure that sensitivity is not reduced too much and SUs are not lost, verify that the Age see Display Association Info on page of all SUs is below 20 seconds.

The Noise Immunity Control submenu includes the following options: 4. The following parameters of the Noise Immunity Control mechanism are applicable only for Manual mode. A higher value may reduce the number of errors at the expense of reduced sensitivity. The range is from 0 to 4.

In the current version only 0 and 4 should be used. The default is 0. The range is from 0 to 7. The available options are 0 or 1. If it is set to High, all Phy errors with levels bellow a certain threshold not accessible to the user will be reported as regular Phy errors, while those with levels higher than the threshold will be reported as detected radar pulses.

When Spectrum Analyzer is running, the Pulse Detection Sensitivity is automatically forced to high for the duration of the test. The default is Low. This excludes management messages generated in the unit, such as Traps or Ping Test frames, which are not filtered.

The direction from which management access is permitted can also be configured, which means that management access may be permitted from the wireless medium only, from the wired Ethernet only, or from both. The Network Management Menu also enables managing transmission of traps, including definition of up to 10 traps destination IP addresses and the associated community strings. For example, if you manage an SU via the wireless link, setting the Access to Network Management parameter to From Ethernet Only completely blocks your management access to the unit.

In this case, a technician may be required to change the settings at the user's site. If management filtering is enabled, the unit can only be managed by stations with IP addresses matching one of the entries in either the Network Management IP Addresses list or in the Network Management IP Address Ranges list, described below, and that are connected to the unit via the defined port s.

The following options are available: Disable: No IP address based filtering is configured. The unit can be managed from the wireless port only by stations with IP addresses matching one of the entries in the Set Network Management IP Addresses parameter.

The unit can be managed from the port s defined by the Access to Network Management parameter only by stations with IP addresses matching one of the entries in the Set Network Management IP Addresses parameter. The default selection is Disable. This is in addition to the previous options in the Network Management menu that enable defining, updating and deleting discrete IP addresses. The menu includes the following options: 4.

The VLAN feature also provides the ability to set traffic priorities for transmission of certain frames. The system also supports the Valid values range from 1 to Default value: 1.

The tag headers are removed from the data frames received from the wireless link before they are transmitted on the Ethernet port. Tagged frames received on Ethernet port, which are meant to be forwarded to the wireless link port, are discarded. This includes frames with tagging for prioritization purposes only. A VLAN Management Tag is inserted in all management frames generated by the unit before transmission on either the Ethernet or wireless link port.

Management frames generated by the unit are not tagged. The following table summarizes the functionality of the internal management port in accordance with the value of the VLAN ID-Management parameter. The table is valid for all link types. The default selection is Hybrid Link. Thus, the unit cannot transfer tagged frames. Table summarizes the functionality of the data port for an Access link. Only tagged data frames received on the Ethernet or wireless link ports are forwarded.

Table summarizes the functionality of the data port for a Trunk link. Table summarizes the functionality of the data port for a Hybrid link. Available selections are Disable and Enable. Valid values are 1 to The range is 1 to These parameters only impact the way in which other VLAN aware devices in the network will handle the packet.

It enables configuring the value of the VLAN Priority field for data frames transmitted to the wireless link. All data frames are routed to the Low queue. This parameter only impacts the way other VLAN aware devices handle the packet. Valid values range from 0 to 7. The default value is 0. All management frames are routed to the High queue.

The default value is 4 for SUs and 0 for AUs. The valid values are from to , and Hex. Filtering the Ethernet broadcasts enhances the security of the system and saves bandwidth on the wireless medium by blocking protocols that are typically used in the customer's LAN but are not relevant for other customers, such as NetBios, which is used by the Microsoft Network Neighborhood.

This feature should not be enabled when there is a router behind the SU. Select from the following options: Disable - no Ethernet Broadcast Filtering. On Ethernet Port Only - filters broadcast messages received from the Ethernet port.

On Wireless Port Only - filters broadcast messages received from the wireless link port. On Both Ethernet and Wireless Ports - filters broadcast messages received from both the Ethernet and wireless link ports. Even if according to the selected option in the Filter Options parameter, broadcast messages should be filtered, DHCP broadcasts are transmitted if this parameter is set to Enable.

Select from the following options: Disable - DHCP Broadcast messages are filtered or transmitted according to the general filtering criteria in the Filter Options parameter. Even if according to the selected option in the Filter Options parameter, broadcast messages should be filtered, PPPoE broadcasts are transmitted if this parameter is set to Enable. Select from the following options: Disable - PPPoE Broadcast messages are filtered or transmitted according to the general filtering criteria in the Filter Options parameter.

Even if according to the selected option in the Filter Options parameter, broadcast messages should be filtered, ARP broadcasts are transmitted if this parameter is set to Enable. Select from the following options: Disable - ARP messages are filtered or transmitted according to the general filtering criteria in the Filter Options parameter.

Enable - ARP messages are transmitted regardless of the selected value of the Filter Options parameter. The default selection is Enable. For this reason, the limiter will receive only the packets that pass through these filters. If the Ethernet filters of the SU are disabled, the limiter will be applied to all relevant packets received. The trap will inform the user how many packets were discarded in the last period. The default is 50 packets. The default is 5 minutes. The available range is 20 to seconds.

The default value is seconds. When broadcast and or multicast relaying is enabled, the relevant packets broadcasts only, multicasts only or both broadcasts and multicasts originating from devices on the wireless link are transmitted by the AU back to the wireless link devices, as well as to the wired LAN.

When the Unicast Relaying parameter is enabled, unicast packets originating from devices on the wireless link can be transmitted back to the wireless link devices. If disabled, these packets are not sent to the wireless link even if they are intended for devices on the wireless link.

Disable the Unicast Relaying parameter only if all unicast messages from the wireless link are certain to be directed to the local wired LAN.

When the list is defined as a Deny List, the AU will not provide services to a unit whose MAC address is included in the list, enabling to disconnect units in cases such as when the user had fraudulently succeeded to configure the unit to values different from the subscription plan. In the case of a Deny list, if the MAC address is included in the list, the SU will be able to associate itself with the AU but will not be able to generate traffic; otherwise if the address is not found in the list the SU will be associated and will be able to generate traffic.

Possible options for this parameter are Deny and Allow. The default is Deny. The default is Enabled. When roaming is not expected, it is preferable to set this parameter to Disable. This will cause the unit to start scanning for another AU after losing connectivity with the current AU only after 7 seconds during which no beacons were received from the current AU. This will prevent scanning for another AU in cases where no beacons were received due to a short temporary problem.

This enables fast distribution of the new location for all clients that are behind the SU. In this case, the SU will send multicast SNAP messages via the wireless link each time it associates with a new AU, except for the first association after reset.

It forwards the SNAP to other AUs and Layer-2 networking equipment via its Ethernet port, to facilitate uninterrupted connectivity and correct routing of transmissions to these clients.

When changed to Disable, all current data sessions will be terminated. The unit is still manageable via the Ethernet port even if it is disabled for data traffic. Frames whose size is smaller than the RTS Threshold value are transmitted directly to the wireless link without being preceded with RTS frames.

The default value is 60 bytes for SUs. The target is to minimize collisions in the wireless medium resulting from attempts of more than one unit to transmit at the same time. The system uses an exponential Back-off algorithm to resolve contention between several units that want to access the wireless medium.

The method requires each station to choose a random number N between 0 and a given number C each time it wants to access the medium. The unit will attempt to access the medium only after a time equal to DIFS for more details refer to section 4.

Each time the unit tries to transmit and a collision occurs; the maximum number C used for the random number selection will be increased to the next available value. The available values are 7, 15, 31, 63, , , and The Minimum Contention Window parameter is the first maximum number C used in the back-off algorithm.

In addition, when the Wireless Link Prioritization Option is enabled, the Minimum and Maximum Contention Window parameters can be configured to provide certain units with an advantage over other units.

The available values are 0, 7, 15, 31, 63, , , and A value of 0 means that the contention window algorithm is not used and that the unit will attempt to access the medium immediately after a time equal to DIFS. It should only be used in point-topoint applications. For more details on configuring units in a point-to-point link refer to section 4. Multicast and broadcast transmissions are not acknowledged; therefore if a multicast or broadcast transmission is not properly received there is no possibility of retransmitting.

It is recommended that you set a lower modulation level for broadcast and multicast frame transmissions to increase the probability that they are received without errors.

The Multicast Modulation Level parameter is applicable only to data frames. Beacons and other wireless management and control frames are always transmitted at the lowest modulation level according to the Sub-Band.

The minimum and maximum values for the Multicast Modulation Level are defined by the Sub-Band in use. Currently, all Sub Bands support the entire range of modulation levels, from 1 to 8. However, the highest modulation level supported by units with HW revision A is modulation level 7. The default value is the lowest supported modulation level modulation level 1.

The purpose is to increase the probability of using the maximum possible modulation level at any given moment. Although the algorithm will avoid using modulation levels that are too high for the prevailing link conditions, it might be better under certain conditions to limit the use of higher modulation levels. If the link quality is not sufficient, it is recommended that the maximum modulation level be decreased, as higher modulation levels increase the error rate.

In such conditions, a higher Maximum Modulation Level increases the number or retransmissions before the modulation level is being reduced by the Adaptive Modulation Algorithm.

A high number of retransmissions reduces the overall throughput of the applicable SU as well as all other SUs associated with the same AU. If the measured SNR is less than a certain threshold, it is recommended that the maximum modulation level of the SU be decreased in accordance with Table , using the values of typical sensitivity.

It is recommended to add a 2 dB safety margin to compensate for possible measurement inaccuracy or variance in the link quality. When the Adaptive Modulation Algorithm is disabled, this parameter will serve to determine Fixed Modulation Level used for transmissions.

The default is the highest supported modulation level 8 for all units with HW revision B or higher, 7 for units with HW revision A. The higher the value of this parameter, the higher is the weight of history in the formula.

Available values: -1 to When the Adaptive Modulation Algorithm is disabled, a frame will be dropped when the number of unsuccessful retransmissions reaches this value.

For details on the effect of this parameter when the Adaptive Modulation Algorithm is enabled, refer to section 4. The available values range is from 1 to This limitation does not apply to units with HW Revision C. The default is 5 milliseconds or the value of Maximum Burst Duration defined for the Sub-Band the lower of the two values. Link quality fluctuates due to various environmental conditions. Dynamically switching between the possible modulation levels increases the probability of using the maximum modulation level suitable for the current radio link quality at any given moment.

In the AU the decision algorithm is performed separately for each SU. The Adaptive Modulation Parameters menu includes the following parameters: 4. If the Maximum Modulation Level is set at the lowest possible level, the Adaptive Modulation algorithm has no effect.

The available range is from 1 to seconds. The default is 4 seconds. In links with a low SNR below 13 , the Adaptive Modulation algorithm may not stabilize on the correct modulation level when using the standard decision thresholds. In this case the algorithm may try to use a modulation level that is too high, resulting in a relatively large number of dropped frames. The default is Normal.

When concatenation is enabled, data packets in the queue of the internal bridge can be accumulated before the concatenated frame is transmitted to the wireless medium. Page 7 Sections 4. Page 8 Statement of Conditions The information contained in this manual is subject to change without notice. Alvarion Ltd. Page Safety Considerations The long-term characteristics or the possible physiological effects of Radio Frequency Electromagnetic fields have not been yet fully investigated. Page 12 when using external antenna are grounded and suitable lightning protection devices are used so as to provide protection against voltage surges and static charges.

In any event, Alvarion is not liable for any injury, damage or regulation violations associated with or caused by installation, grounding or lightning protection. Some of the equipment provided by Alvarion and specified in this manual, is manufactured and warranted by third parties. All such equipment must be This manual contains the following chapters and appendices: Chapter 1 — System description: Describes the BreezeAccess VL system and its components.

Chapter 2 — Installation: Describes how to install the system components. Appendix F — Parameters Summary: Provides an at a glance summary of the configuration parameters, value ranges and default values. Page Table Of Contents 1.

Page 18 2. Page 20 F. Page 21 F. Page 25 Tables Table Frequency Bands Page Introducing Breezeaccess Vl These qualities enable service providers to reach a previously inaccessible and broader segment of the subscriber population.

The Subscriber Unit provides an efficient platform for high speed Internet and Intranet services. The use of packet switching technology provides the user with a connection to the network that is always on, enabling immediate access to services.

NOTE It is recommended to pre-configure the units prior to shipment to end-users. Page Networking Equipment Networking Equipment The Base Station equipment is connected to the backbone through standard data communication and telecommunication equipment. The point-to-point link from the Base Station to the backbone can be either wired or wireless. Page Management Systems Management Systems The end-to-end IP-based architecture of the system enables full management of all components, from any point in the system.

Embedded with the entire knowledge base of BWA network operations, AlvariSTAR is a unique state-of-the-art power multiplier in the hands of the service provider that enables the provisioning of satisfied customers.

Page Specifications EN V1. Page Data Communication 4. Page Physical And Electrical 1. Page Table 25Dbi Antenna Specifications 2. Page Environmental 1. Use only Category 5E Ethernet cables from approved manufacturers, listed in Table Consult with Alvarion specialists on the suitability of other cables. Alvarion and its resellers or distributors are not liable for injury, damage or regulation violations associated with the installation of Outdoor Units or antennas.

Page 61 Equipment Positioning Guidelines The indoor equipment should be installed as close as possible to the location where the indoor-to-outdoor cable enters the building. Page Installing The Outdoor Unit when using external antenna are grounded and suitable lightning protection devices are used so as to provide protection against voltage surges and static charges. Be sure to insert the threaded rods with the grooves pointing outward, as these grooves enable you to use a screwdriver to fasten the rods to the unit.

Page 70 The sealing cap has a special groove allowing to insert an ethernet cable with an already assembled RJ connector through the cap.

To expose the groove, lightly squeeze the cap. Carefully insert the cable with the assembled connector through the groove. Put the sealing cap back in its place. Make sure that the small protrusion on the side of the cap fits inside the hole on the connector's protective body.

Page Reset Button Functionality NOTE The length of the Ethernet cable connecting the indoor unit to the user's equipment, together with the length of the Indoor-to-Outdoor cable, should not exceed meters.

Other installation tools and materials means for securing cables to walls, etc. Blinking Amber: Testing not ready for operation Red: Self-test failed. Page Installation Guidelines Installation Guidelines The unit can be placed on a desktop or a shelf. It can also be wall mounted using the optional bracket available from Alvarion.

It uses a detached antenna. Instructions for the available installation options of the detached antenna Page 77 Verify that the green Status LED located on the unit's front panel illuminates, indicating that the power supply to the unit is OK and self test passed successfully. For installation instructions see Section 2. Page Wall Mount Simple window mounting accessories, enabling installation on a glass window without any capability for adjusting the direction.

For installation instructions see Section Window mounting kit with rotation capability, enabling installation on a glass window with rotation capability for adjusting the direction.

For installation instructions see Section NOTE Ensure that the antenna is mounted vertical to the floor, with the connector facing downward, and Note, the Wall-H plate is the one with the horizontal ellipse on the short side. Make sure the inscriptions are facing upwards. Use two M5 screws to fasten the plates together. Do not over tighten. Use the two remaining M5 screws to fasten them.

Fasten the antenna to the wall. Use the two 8 screws provided with the kit. Connect the antenna cable to the connector located on the bottom side of the antenna. Page Figure Window Mounting The Antenna Connect the antenna cable to the connector located on the bottom side of the antenna. Use only the torque key supplied with the antenna. Do not use a wrench or a similar tightening tool.

Page 83 2. Attach the rotation bars to the antenna and the suction cups to the rotation bars. Indicates that the 3. Page 90 The length of each of the Ethernet cables the cable connecting the indoor unit to the user's equipment and the Indoor-to-Outdoor cable should not exceed meters. Reset the unit using the RESET button after connecting or reconnecting the indoor and outdoor units with the indoor-to-outdoor cable.

Page 94 After the basic parameters are configured, the unit should be reset in order to activate the new configuration. This enables the installer to perform the entire process of configuring basic parameters, aligning the antenna and verifying proper operation of the unit right after completing the installation, minimizing the number of times the installer must climb to the roof.

It is recommended that a 2 dB margin be added to compensate for possible measurement inaccuracy or variance in the quality of the link. Blinking rate is proportional to wireless traffic rate Off — Page Su-I Unit Verification Off — No Ethernet connectivity has been detected between the outdoor end Ethernet unit and the device connected to the connectivity indoor unit. Green — Self-test passed and Ethernet connection confirmed by the outdoor unit Ethernet integrity check passed.

Contact Alvarion's Customer Service and give them the challenge string after user identification to receive a one-time password. Page Refer to Appendix F for information on which parameters are run time configurable, which means that the unit need not be reset for the parameter to take effect, and which parameters do require that the unit be reset. Page Menus And Parameters Menus and Parameters The following sections describe the menus and parameters provided by the Monitor program.

Available at all access levels. Unit Hardware Version: The version of the outdoor unit hardware. Page 4. After reset, any modifications made to the system parameters are applied.

Page Change Password New parameters are loaded with their default values. Select from the following options: for a list of the default passwords for each of the access levels. The unit is reset automatically. Following the next reset the unit will switch to the main version.

To clear the field press ". Page MIB2. The default system location is an empty string. The event log is an important debugging tool and a flash memory sector is dedicated for storing it. Events are classified according to their severity level: Message lowest severity , Warning, Error or Fatal highest severity.

For units with HW revision C and higher, the maximum length of an Ethernet packet that can be accepted from or transmitted to the Ethernet port excluding CRC is bytes, including VLAN s for single or double-tagged packets. Page High queue. Page Total Tx events: The total number of transmit events. Typically, transmission events include cases where transmission of a frame was delayed or was aborted before completion.

The following additional counters are displayed to indicate the reason for and the nature of the event: 4. This is because higher the NF value in the AU will result in shorter coverage distance. Also, sometimes the retransmissions are performed only on the same modulation even if Retries on Lower Modulations are enabled and possible.

The presented distance may be higher than the real one. However, operation in near-line-of-sight or non-line-of-sight conditions can be achieved at shorter distances and certain favorable path propagation conditions; given link performance degradation is accepted.

This means that the entire spectrum is heavily interfered. In this case, it is recommended to decrease the Channel Scan Period and re-run Interference Mitigation. The reason is that, on the SU side, it should only be used in special cases, like, for example, when the downlink SNR is good but the performance is low only for a particular SU in the sector.

In rare cases, some VL units might require a restart for the radio to operate, 5 minutes after starting up in extremely cold weather.

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