LKT-COMPACT3XBase station transceiver

BreezeCOMPACT System Manual Release Version: 1.0 December 2011 P/N BreezeCOMPACT System Manual ii Document History Document History TopicDescriptionDate Issued BreezeCOMPACT System ManualFirst publication of a System Manual for a new product March 2012 BreezeCOMPACT System Manual iii Legal Rights Legal Rights © Copyright 2012 Alvarion Ltd. All rights reserved. The material contained herein is proprietary, privileged, and confidential and owned by Alvarion or its third party licensors. No disclosure thereof shall be made to third parties without the express written permission of Alvarion Ltd. Alvarion Ltd. reserves the right to alter the equipment specifications and descriptions in this publication without prior notice. No part of this publication shall be deemed to be part of any contract or warranty unless specifically incorporated by reference into such contract or warranty. Trade Names Alvarion ® , BreezeCOM ® , WALKair ® , WALKnet ® , BreezeNET ® , BreezeACCESS ® , BreezeLINK ® , BreezeMAX ® , BreezeLITE ® , BreezePHONE ® , 4Motion ® , and/or other products and/or services referenced here in are either registered trademarks, trademarks or service marks of Alvarion Ltd. All other names are or may be the trademarks of their respective owners. “WiMAX Forum” is a registered trademark of the WiMAX Forum. “WiMAX,” the WiMAX Forum logo, “WiMAX Forum Certified”, and the WiMAX Forum Certified logo are trademarks of the WiMAX Forum. Statement of Conditions The information contained in this manual is subject to change without notice. Alvarion Ltd. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this manual or equipment supplied with it. Warranties and Disclaimers All Alvarion Ltd. (“Alvarion“) products purchased from Alvarion or through any of Alvarion's authorized resellers are subject to the following warranty and product liability terms and conditions. Exclusive Warranty (a) Alvarion warrants that the Product hardware it supplies and the tangible media on which any software is installed, under normal use and conditions, will be free from significant defects in materials and workmanship for a period of fourteen (14) months from the date of shipment of a given Product to Purchaser (the "Warranty Period"). Alvarion will, at its sole option and as Purchaser's sole remedy, repair or replace any defective Product in accordance with Alvarion' standard R&R procedure. (b) With respect to the Firmware, Alvarion warrants the correct functionality according to the attached documentation, for a period of fourteen (14) month from invoice date (the "Warranty Period")". During the Warranty Period, Alvarion may release to its Customers firmware updates, which include additional performance improvements and/or bug fixes, upon availability (the "Warranty"). Bug fixes, temporary patches and/or workarounds may be supplied as Firmware updates. Additional hardware, if required, to install or use Firmware updates must be purchased by the Customer. Alvarion will be obligated to support solely the two (2) most recent Software major releases. ALVARION SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY PURCHASER'S OR ANY THIRD PERSON'S MISUSE, NEGLIGENCE, IMPROPER INSTALLATION OR IMPROPER TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING OR OTHER HAZARD. BreezeCOMPACT System Manual iv Legal Rights Disclaimer (a) The Software is sold on an "AS IS" basis. Alvarion, its affiliates or its licensors MAKE NO WARRANTIES, WHATSOEVER, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE SOFTWARE AND THE ACCOMPANYING DOCUMENTATION. ALVARION SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT WITH RESPECT TO THE SOFTWARE. UNITS OF PRODUCT (INCLUDING ALL THE SOFTWARE) DELIVERED TO PURCHASER HEREUNDER ARE NOT FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR RESALE IN APPLICATIONS WHERE THE FAILURE, MALFUNCTION OR INACCURACY OF PRODUCTS CARRIES A RISK OF DEATH OR BODILY INJURY OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). HIGH RISK ACTIVITIES MAY INCLUDE, BUT ARE NOT LIMITED TO, USE AS PART OF ON-LINE CONTROL SYSTEMS IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, LIFE SUPPORT MACHINES, WEAPONS SYSTEMS OR OTHER APPLICATIONS REPRESENTING A SIMILAR DEGREE OF POTENTIAL HAZARD. ALVARION SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. (b) PURCHASER'S SOLE REMEDY FOR BREACH OF THE EXPRESS WARRANTIES ABOVE SHALL BE REPLACEMENT OR REFUND OF THE PURCHASE PRICE AS SPECIFIED ABOVE, AT ALVARION'S OPTION. TO THE FULLEST EXTENT ALLOWED BY LAW, THE WARRANTIES AND REMEDIES SET FORTH IN THIS AGREEMENT ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING BUT NOT LIMITED TO WARRANTIES, TERMS OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, NON-INFRINGEMENT, AND ACCURACY OF INFORMATION GENERATED. ALL OF WHICH ARE EXPRESSLY DISCLAIMED. ALVARION' WARRANTIES HEREIN RUN ONLY TO PURCHASER, AND ARE NOT EXTENDED TO ANY THIRD PARTIES. ALVARION NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS. Limitation of Liability (a) ALVARION SHALL NOT BE LIABLE TO THE PURCHASER OR TO ANY THIRD PARTY, FOR ANY LOSS OF PROFITS, LOSS OF USE, INTERRUPTION OF BUSINESS OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DA…

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4Motion Installation Manual 31 Chapter 2 - BreezeCOMPACT InstallationUnpacking and Inspecting For wall mount installation - four suitable dowels and screws Complementary products: »Maintenance Cabinet - required for backup batteries, power system, AC/DC power adaptors and local transport/backhauling equipment »Auxiliary Box - required for Dry Contact alarms, connectivity controllers, and easy access to technical support 2.2.3Mounting Options Use the following table as a reference for installation depending on your system configuration. Book Title Installation Manual 32 Chapter 2 - BreezeCOMPACT Installation Unpacking and Inspecting Table 2-1: Mounting Options Configuration Option Use kit Refer to Example Standalone (without an attached antenna) Pole mount - poles between 1” - 4” Pole mount kit (four clamps), supplied with the unit “To mount the BTS on a pole of up to 4” (using clamps):” on page 36 Pole mount - poles up to 6”  Metal bands  Pole mount kit (two clamps only) “To mount the BTS on a pole of up to 6”(using metal bands):” on page 37 With an attached antenna Pole mount - poles between 1” - 4”  Antenna  Pole mount kit  Antenna mounting kit (includes carriage and parts to attach the antenna) “Pole Mounting with an Attached Antenna” on page 39 “To prepare for mounting on a 1”-4” pole:” on page 40  “To mount the antenna:” on page 43 Book Title Installation Manual 33 Chapter 2 - BreezeCOMPACT Installation Unpacking and Inspecting With an attached antenna Pole mount - poles up to 6”  Pole mount kit (supplied with the unit)  Metal bands  Antenna  Antenna mounting kit (includes carriage and parts to attach the antenna) 1 “To prepare for mounting on a pole up to 6'' (using metal bands):” on page 43 2 “To mount the antenna:” on page 43 Standalone Wall mount  Wall mount kit “Wall Mount Installation” on page 45 Table 2-1: Mounting Options Configuration Option Use kit Refer to Example Book Title Installation Manual 34 Chapter 2 - BreezeCOMPACT Installation Unpacking and Inspecting With an attached antenna Wall mount  Antenna  Antenna mounting kit (includes carriage and parts to attach the antenna)  Wall mount kit 1 “To mount the antenna:” on page 43 2 “Wall Mount Installation” on page 45 Table 2-1: Mounting Options Configuration Option Use kit Refer to Example 4Motion Installation Manual 35 Chapter 2 - BreezeCOMPACT InstallationBreezeCOMPACT Installation 2.3BreezeCOMPACT Installation 2.3.1Installing the BTS on a Pole The BTS can be installed on poles of various sizes using the supplied mounting kits. For poles of 1''-4'' in diameter, use the supplied metal clamps. For larger poles (up to 6”) use the metal bands and two clamps out of the four included in the pole mount kit. When an attached antenna is to be installed together with the BTS, use the carriage mounting kit, which includes a carriage and parts to attach the antenna. Install the BTS and the antenna on the ground and then lift the assembly up the pole using the carrying hook. INFORMATION Install the unit with the bottom panel, including the LEDs, facing downward. Note the direction arrows (UP) on the sides of the BTS. CAUTION The weight of the BTS is 9 kg and the weight of the Pole Mounting Kit is approximately 5 kg. Make sure to plan the installation accordingly. It is recommended to use a harness and carrying hook to lift the units. Install the unit using the supplied kit only. CAUTION Do not use the hook for lifting the assembly when the GPS is installed on the carriage. This may damage the GPS. Tie the carriage on both sides and carefully lift it up the pole. 4Motion Installation Manual 36 Chapter 2 - BreezeCOMPACT InstallationPole Mounting without an Attached Antenna (Standalone) 2.4Pole Mounting without an Attached Antenna (Standalone) When not using the attached antenna, mount the BTS on the pole using the pole mount kit supplied with the BTS. Refer to Figure 2-1 and Figure 2-2. 1Thread the four rods through the nuts, washers, spring washers, and two clamps, and fasten the clamps to the BTS mounting holes. 2Attach the BTS with the mounted clamps to the pole. 3Thread the other two clamps to the rods and use the nuts washers and spring washers to fasten and fix the BTS to the pole. To mount the BTS on a pole of up to 4” (using clamps): Figure 2-1: Pole Mounting without the Carriage 4Motion Installation Manual 37 Chapter 2 - BreezeCOMPACT InstallationPole Mounting without an Attached Antenna (Standalone) Refer to Figure 2-3 and Figure 2-4. 1Thread two metal bands through the designated grooves in two clamps. 2Attach the clamps to the BTS and use the screws, washers and spring washers to fasten the clamps to the BTS (Figure 2-3) 3Close and fasten the bands. Figure 2-2: BTS Installed on the Pole To mount the BTS on a pole of up to 6”(using metal bands): 4Motion Installation Manual 38 Chapter 2 - BreezeCOMPACT InstallationPole Mounting without an Attached Antenna (Standalone) Figure 2-3: Attaching the Clamps Figure 2-4: BTS Installed on Poles Using Metal Bands Clamps Screws, Washers and Spring Washers Grooves for Metal Bands Metal Bands on Clamps 4Motion Installation Manual 39 Chapter 2 - BreezeCOMPACT InstallationPole Mounting with an Attached Antenna 2.5Pole Mounting with an Attached Antenna When using the attached antenna, you first mount the BTS on the carriage, then also the antenna (and optionally GPS), and finally lift the assembly up the pole, attach the clamps/metal bands and fasten the screws. 2.5.1Package Content Antenna Antenna mounting kit, including: »One carriage »2 x Antenna tilting arms »6 x M8 Hex nuts »6 x M8x22 screws »6 x M8 flat washers »6 x M8 spring washers Pole mount kit - use the following parts: »Clamps/metal bands depending on pole diameter »4 rods »8 x nuts, washers, and spring washers Hook for carrying the assembly up the pole TBD Describe single sector installation including Double Dual Slant attached antenna with the RF cable tails. TBDAlso describe 2 sectors installation with 2…

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Alvarion Ltd. 21A HaBarzel Street, Tel-Aviv 69710, Israel Main Line / Fax: 972-3-645- 6262/6222 www.alvarion.com 29/03/12 Breeze Compact 3400-3675MHz , base station system Model: CMP.XT-BS-3.X IC: 2514A-COMPACT3X FCC ID: LKT-COMPACT3X To whom it may concern, Contention based protocol Breeze Compact 3400-3675MHz is a high capacity, IP services oriented Broadband Wireless Access system. Breeze Compact 3400-3675MHz is digital modulated TDD system operating in the 3650 MHz up to 3675 MHz band. The system contains a base station unit and subscriber units. Subscriber units are available as Outdoor CPE and indoor CPE. According to IC rules, the current Alvarion Breeze Compact 3400-3675MHz product line is eligible to operate in the 3650-3675 MHz band in the Canada as “restricted contention-based” product. Only the lower 25 MHz in the spectrum is assigned for restricted contention-based protocols, like IEEE 802.16d or 802.16e. The recent FCC publication of “Memorandum Opinion and Order” on June 7, 2007 released 50 MHz spectrum for broadband wireless access applications. The most eminent difference in FCC ruling for this band is that it is “licensed”, while allowing both “unrestricted contention-based protocols” and “restricted contention-based protocols.” Specifically, the “restricted contention-based protocols” can only operate in the lower 25 MHz band. Alvarion Ltd. 21A HaBarzel Street, Tel-Aviv 69710, Israel Main Line / Fax: 972-3-645- 6262/6222 www.alvarion.com 1 STC mode TDD frame DL & UL Maps UL Scheduled Period including Maintenance and Request Region P r e a m b l e FC H P r e a m b l e STC P r e a m b l e Double Blocks for STC Propagati on Delay Symbols RTG TTG UL Conten tion Period 2 Reservation Techniques for BW request allocated once per 40 frames Alvarion Ltd. 21A HaBarzel Street, Tel-Aviv 69710, Israel Main Line / Fax: 972-3-645- 6262/6222 www.alvarion.com 3 Focused Contention Focus Contention Codes Alvarion Ltd. 21A HaBarzel Street, Tel-Aviv 69710, Israel Main Line / Fax: 972-3-645- 6262/6222 www.alvarion.com 7 Focused Contention signal

April 19, 2012 FCC ID:LKT‐COMPACT3X To whom it may concern The Compact product is Multi port transceiver. The TX is transmitted in 2 different ANT and 2 different polarities [90Deg between ANT ports]. This gives us 30dB attenuation between 2 TX ports which their antenna is in same direction. The contribution of other antennas in the field will be minor [30dB less]. Only two radio channel transmit at the same time. There are two options 1. SISO mode -maximum output power that is allowed 2. MIMO mode - maximum output power that is allowed minus 3dB.

April 17, 2012 To: Federal Communications Commission Subject: Answers to FCC technical questions for devices operating in the 3650‐3675 MHz band as per 552295 D01 CBT Guidance for 3650 3700 Band v01r01. 1.1 Restricted Protocol Description 1.1.1 Address the key requirements for operation using restricted contention base protocol Opportunities for other transmitters to operate. Please note that this requires recognizing Like systems (similar to yours) that permit operation on a co‐channel. The Compact BS uses a GPS system to synchronize the 5ms framing and uses the same TDD ratio to allow similar systems to operate in the same TDD ratio without interfering one BS receive with other BS transmit. Since transmit and receive of all similar BSs are done in the same synchronized periods without any overlapping between transmit and receive periods of each and other it provides satisfactory sharing of spectrum with similar systems. Slave subscriber units are managed by the BSs in which their transmission is allocated using maps broadcasted by the BS in which a contention between the slave units is prevented. In addition to prevent a weak CPE of one sector to be interfered by other sector’s strong CPE an ATPC (Automatic Transmit Power Control) mechanism is executed by the CPEs, to allow satisfactory sharing of the spectrum with similar systems in a co‐channels. 1.1.2 Provide any additional manuals and operational descriptions to allow the reviewer to understand the protocol and is operation. The following GPS synchronized TDD framing diagram is used to allow satisfactory sharing of the spectrum with similar systems. TTG is Transmission switching to Receive Gap in the BS and vice versa in the CPE. RTG is Receive switching to Transmit Gap in the BS and vice versa in the CPE. FFZ – Fast Feedback Zone is a zone allocated by the UL maps broadcasted by the BS. The CPE may lottery a CDMA code for ranging or bandwidth request in pre allocated location for these activities by the BS UL maps broadcasted in DL direction. There are 256 different CDMA codes that can be used to separate between CPEs requests contentions if appeared. If CPE does not answered to the request it repeats the appropriate request after a random increased back‐off time. In addition the UL map broadcasted by the BS assigns to each CPE how many bursts to use and their allocation for the BW request received. In which the contention between them is prevented. CPEs associated to the some BS learn and then recognize the preamble index broadcasted by each BS at each frame start. There are 114 different applicable preamble indexes to identify BSs working in the same area. The above illustrated frame is synchronized by GPS global 1PPS signal in which all BSs uses the same synchronized frames and the same TDD ratio as mentioned above. In addition the protocol allows permutation of OFDM subcarriers to prevent contentions and interference. The system uses ATPC that calculates the link loss and limits the CPE transmission power to prevent contention with neighbor sectors CPEs. Both the CPE and the BS uses directional antennas to reduce inter / intra site interference. The ATPC is done in open loop by the CPE and corrected in close loop by the BS as described in the following flow chart: 1.2 Describe the method to permit occupancy The method to permit occupancy is synchronized schedule protocol that prevents contentions. 1.3 Describe the action taken if two or more transmitters simultaneously access the same channel by the master and the client devices. See paragraph 1.1.2 above. 1.4 Describe opportunities for other similar systems to operate‐address how, or if a different system operator using the same technology can operate in the same band. Considering the above mentioned similar systems can definitely use and share the same band for continues and simultaneous operation.

April 29, 2012 To: Federal Communications Commission Subject: Answers to FCC technical questions for devices operating in the 3650‐3675 MHz band as per 552295 D01 CBT Guidance for 3650 3700 Band v01r01. 1.1 Restricted Protocol Description 1.1.1 Address the key requirements for operation using restricted contention base protocol Opportunities for other transmitters to operate. Please note that this requires recognizing Like systems (similar to yours) that permit operation on a co‐channel. The Compact BS uses a GPS system to synchronize the 5ms framing and uses the same TDD ratio to allow similar systems to operate in the same TDD ratio without interfering one BS receive with other BS transmit. Since transmit and receive of all similar BSs are done in the same synchronized periods without any overlapping between transmit and receive periods of each and other it provides satisfactory sharing of spectrum with similar systems. Slave subscriber units are managed by the BSs in which their transmission is allocated using maps broadcasted by the BS in which a contention between the slave units is prevented. In addition to prevent a weak CPE of one sector to be interfered by other sector’s strong CPE an ATPC (Automatic Transmit Power Control) mechanism is executed by the CPEs, to allow satisfactory sharing of the spectrum with similar systems in a co‐channels. The CPE is not able to transmit w/o the permission of the BS using a schedule protocol. The system is a TDD system synchronized by a GPS in which when the BSs transmit they do not receive and when they receive they do not transmit. In addition we use sectorial antennas that decrease the radiation to adjacent sector dramatically that will not interfere adjacent channel served CPEs installed in a distance from the BS. Therefore there will not be interference between the BSs and sector clients. CPE on one sector can transmit when CPE of other sector transmits since each of them is allocated by a separate BS schedule protocol. Therefore to prevent adjacent channel interference between 2 CPEs received at two BS located in the same location considering strong received CPE versus weak CPE we use ATPC to reduce the interference to adjacent channel received CPEs in which they are not interfered. 1.1.2 Provide any additional manuals and operational descriptions to allow the reviewer to understand the protocol and is operation. The following GPS synchronized TDD framing diagram is used to allow satisfactory sharing of the spectrum with similar systems. TTG is Transmission switching to Receive Gap in the BS and vice versa in the CPE. RTG is Receive switching to Transmit Gap in the BS and vice versa in the CPE. FFZ – Fast Feedback Zone is a zone allocated by the UL maps broadcasted by the BS. The CPE may lottery a CDMA code for ranging or bandwidth request in pre allocated location for these activities by the BS UL maps broadcasted in DL direction. There are 256 different CDMA codes that can be used to separate between CPEs requests contentions if appeared. If CPE does not answered to the request it repeats the appropriate request after a random increased back‐off time. In addition the UL map broadcasted by the BS assigns to each CPE how many bursts to use and their allocation for the BW request received. In which the contention between them is prevented. CPEs associated to the some BS learn and then recognize the preamble index broadcasted by each BS at each frame start. There are 114 different applicable preamble indexes to identify BSs working in the same area. The above illustrated frame is synchronized by GPS global 1PPS signal in which all BSs uses the same synchronized frames and the same TDD ratio as mentioned above. In addition the protocol allows permutation of OFDM subcarriers to prevent contentions and interference. The system uses ATPC that calculates the link loss and limits the CPE transmission power to prevent contention with neighbor sectors CPEs. Both the CPE and the BS uses directional antennas to reduce inter / intra site interference. The ATPC is done in open loop by the CPE and corrected in close loop by the BS as described in the following flow chart: 1.2 Describe the method to permit occupancy The method to permit occupancy is synchronized schedule protocol that prevents contentions. 1.3 Describe the action taken if two or more transmitters simultaneously access the same channel by the master and the client devices. See paragraph 1.1.2 above. 1.4 Describe opportunities for other similar systems to operate‐address how, or if a different system operator using the same technology can operate in the same band. Considering the above mentioned similar systems can definitely use and share the same band for continues and simultaneous operation.

Page 1 of 1 May 9, 2012 Federal Communication Commission Office of Engineering and Technology USA RE: FCC ID:LKTCOMPACT3X Form 731 CN: EA542527 Subject: CRN 41766 Dear Mr. Chen, Please find attached our response according to your questions. 1) You asked to coexist with similar systems. Our system may work properly with different BSs in the same coverage area by using frequency reuse 3 and directional antennas. An example of frequency 3 distribution is shown in the following. As you know we have 5 frequencies of 5 MHz each in arrange of 3.65 – 3.675 GHz. 2) The maximum power supported by the hardware is up to 27 dBm, but it is limited by the software to the maximum values stated in section 7.2 of the test report and not available to the end user. The system uses 4 receive antennas and up to 2 transmit antennas. Both Tx channels transmit uncorrelated information. Two transmit antennas are cross polarized and based on 662911 D02 MIMO with Cross-Polarized Antennas v01, EIRP and EIRP power density limits are calculated as the single output power with addition of antenna gain- no further corrections required as appears in section 7.2 of the test report. MPE is calculated as the total output power with addition of antenna gain, 3 dB higher than the single RF chain Tx power as orthogonal polarizations cause superposition of fields within human body and cause higher exposure/heating that should be taken into account. Adjusted file “RF_Env_evaluation_22854_rev1” uploaded on May 9, 2012. Moti Ezra Certification & Qualification Department Group Manager Alvarion Ltd. Michael Nikishin, EMC & Radio Group Manager Hermon Laboratories

Page 1 of 1 May 15, 2012 Federal Communication Commission Office of Engineering and Technology USA RE: FCC ID:LKTCOMPACT3X Form 731 CN: EA542527 Subject: CRN 41781 Dear Mr. Chen, Please find attached our response according to your questions. 1) We share the same channel using the radio planning as already I sent before considering Reuse 3 scheme. In addition we use different preamble index that identifies the BS in which CPEs can follow exactly the associated BS there are 114 combinations of preamble indexes. Additional mechanism is OFDM sub-channels/carriers permutations in which we randomly mix the subcarriers for each BS in UL and DL directions separately to prevent the interferences. The permutations are orthogonal in which reduces the interferences. All this is parallel to GPS synchronization and TDD ratio that prevents Transmit and Receive overlapping of the sites. In addition we have 25MHz that we can plan to distribute 5 channels of 5MHz each that allows distribution of the frequencies between the neighbor BS. The following shown scenario is also satisfied using 3 channels of 5MHz each. Considering all this I do not see any problem to have coexistence of frequencies between the BSs. 2) We use 2Tx/4Rx. Moti Ezra Certification & Qualification Department Group Manager Alvarion Ltd. Michael Nikishin, EMC & Radio Group Manager Hermon Laboratories

Subject: FCC ID:LKT-COMPACT3X Attestation statement In current product's release the software version does not support the 4T4R design and supports only 2T4R option. We will renew certification if and when we will have a support for 4T4R option. Sincerely, Moti Ezra Certification Group Manager

Subject: FCC ID: LKT-COMPACT3X WiMAX Technology The FCC mentions the WiMAX technology as an example of restricted contention protocol. “34.Under the Commission’s rules. Contention-based protocols can be broadly categorized as either “unrestricted” or “restricted”.....restricted contention protocols can prevent interference only with other device incorporating the same protocol WiMAX with its scheduling protocol, currently stands as the main example of a restricted contention technology. In its present format, WiMAX technology effectively prevents interference among multiple transmitters on a single WiMAX system. Different WiMAX systems can be coordinated to avoid interfering with each Other, thus providing each WiMAX device a ”reasonable opportunity to operate “(FCC 07-99). WiMAX Protocol Brief WiMAX MAC protocol is a centralized protocol in which the base station controls access to the air interface .in the downlink all decisions related to the allocation of bandwidth to various MSs are made by the BS which does not require the involvement of the MS. As packets arrive for each terminal, the BS schedules them for the PHY resources, based on their QoS requirements. Once dedicated PHY resources have been allocated for the transmission of the MAC PDU, the BS indicates this allocation to the MS, using the specific MAC messages. In general, WiMAX terminal is a slave to the BS. In the uplink, the MS requests resources by using a contention based protocol. WiMAX uses a truncated binary exponential back-off algorithm for contention –resolution during polling of user terminals. When it needs to send a bandwidth request the MS first enters a contention resolution phase, if selecting a uniformly distributed random number between 0 and BACKOFF WINDOW. These random values indicate the number of transmission opportunities –allocated resources for multicast /broadcast poll –the MS will wait before sending its bandwidth request. BACKOFF WINDOW is the maximum number of transmission opportunities an MS can wait before sending the pending bandwidth Request. If it does not receive a bandwidth allocation based on the UL MAP message within a time window specified by a timer, the MS assumes that its bandwidth request message was lost, owing to collision with another MS, in which case MS increases is back-off window and repeats the process. If bandwidth is still not allocated after a maximum number of retries, the MAC PDU is discarded. Best Regards, Moti Ezra Certification Group Manager

Alvarion Ltd. BreezeCOM and Floware unite 21a HaBarzel St. Tel Aviv, 69710 Israel Main Line / Fax: 972 3 645 6262 / 6222 www.alvarion.com April 3, 2012 Federal Communication Commission Office of Engineering and Technology USA Subject: Application for certification of the Broadband Wireless Access system base station transceiver, FCC ID:LKT-COMPACT3X, model name BreezeCOMPACT Dear Gentlemen, Please find attached our application for certification of the Broadband Wireless Access system base station transceiver, FCC ID:LKT-COMPACT3X, model name BreezeCOMPACT prepared in accordance with FCC Rules, parts 2 and 90 subpart Z, operating frequencies 3653.5 - 3671.5 MHz. The product testing and this application for certification were performed by Hermon Laboratories, which is listed by FCC (Registration Numbers 90623, 90624). The FCC Designation Number is US1003. Hermon Labs responsible…

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