ONZODU-3900-001Fibreglass(TM) 3900 Series Outdoor unit

Proprietary and Confidential 1 03/01/02 C:\Documents and Settings\jgreenwood\Desktop\3900\File for CKC\Confidentiality Letter revised2.doc 3/1/2002 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen, This letter is to comply with Section 0.477 (d)(2)(i) pertaining to confidential material. Ensemble Communications, Inc. would like the following documents regarding the submissions for FCC ID: ONZODU-3900-001 and ONZODU-3900-002 to be kept confidential: 1. CPE_ODU_Block.pdf, “Block Diagram of the CPE ODU”, 1 page 2. BS_ODU_Block.pdf, “Block Diagram of the Base Station ODU”, 1 Page 3. ODU_IFM_Block.pdf, “Block Diagram of the IFM used in both the CPE and Base Station ODU”, 1 page 4. Operation description.pdf, “Description of the modulation and transmit chain”, 2 pages 5. MACOM 38 GHz MMW Module Block Diagram.pdf, “Block diagram of the MMW module”, 1 page 6. IFM module.pdf, picture of the IFM, 1 page 7. odu_IF_e.pdf, “Ensemble ODU-IF Schematic, PCB00000001, Rev E”, 8 pages 8. FCC_PS.pdf, , REMEC Wireless Drawing W60265, “Power Supply Schematic”, 1 page 9. OperatorsGuideRel1-1_E1A.pdf, “Operator’s Guide to the Fiberless? System for ATM Networks”, 970-0012-001, ATM Release 1.1, August 24, 2001, 720 pages, except sections 3, 4, 5 and 6 The above material contains trade secrets or technical data, which would customarily be guarded from competitors. We do not want these documents to be accessible to the general public. Sincerely, Jason Greenwood Member Technical Staff Ensemble Communications, Inc. 9890 Towne Centre Drive San Diego, CA 92121 Phone: (858) 535-2886 [email protected]

February 15, 2002 Dear Sir/madam, Ensemble Communications is submitting its family of Fiberless 3900 units for Certification under Part 101 of the FCC rules. The Fiberless 3900 units are transceivers that operate in the 38.65 GHz-39.8 GHz range. The Fiberless Access System, of which the Fiberless 3900 series are a part of, is a third- generation point-to-multipoint broadband wireless access system. The Fiberless Access System uses a patented, proprietary technology called Adaptix that makes the system particularly cost efficient for network operators to deploy. In addition, Adaptix allows network operators to offer new, differentiated services to their subscribers, positioning them ahead of their competition in the marketplace. As part of the FCC part 101 submission, we are submitting the Operator’s Guide to the Fiberless System for ATM Networks. This manual is only provided to individuals and corporations that have executed Non-Disclosure Agreements with Ensemble. The reason for this is that the Operator’s Guide to the Fiberless System for ATM Networks contains technical details that describe the implementation and operation of many of the proprietary features in the Fiberless System. For this reason we request that the entire Operator’s Guide to the Fiberless System for ATM Networks not be made available to the general public. Sections 3, 4,5 and 6, which describe the physical installation of the Fiberless System, can be made available. Sincerely, Jason Greenwood Member of Technical Staff Ensemble Communications Inc.

Base Station ODU, no antenna Side view Base Station ODU, with antenna Bottom view Base Station ODU, with antenna Front view Base Station ODU, with antenna Side 1 view Base Station ODU, with antenna Side 2 view

CPE ODU, no antenna Front view CPE ODU, no antenna Side view CPE ODU, with antenna Side view

Proprietary and Confidential204/30/01 H:\Emi\METrak Folders\10880 Ensemble TCB FCC ID ONZODU-2800-002\label and location\ODU Labels 2800-002.doc ODU_Chassis1C.vsd Top ElevationSide ElevationSide Elevation 3.66 cm (1.44") 22 cm (8.75") 43 cm (16.88") 42 cm (16.50") 3.175 cm (1.25") 9.22 cm (3.63") Regulatory Label Ensemble Serial # Label 03/09/01 BS-ODU Elevations with Label Locations

NEMA 3R / IP14 Made in USA Patents Pending FCC ID: This device complies with Part 15, Class B of the FCC rules. Operations is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Model No: E214313I.T.E. P/N 935-0028-003 Fiberless ™ 3900 Frequency Band: 3900 38.650-39.80 GHz ONZODU-3900-001 This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada

NEMA 3R / IP14 Made in USA Patents Pending FCC ID: This device compli es with Part 15 , Class B of the FCC rules. Operation s is sub ject to the foll owing two conditions: (1) This de vice may not cause harmful interference, and (2) This device must acc ep t any interferen ce received, including interference tha t may cause undesired operation. Model No: E214313I. T.E. P/N 935-0028-003 Fiberless ™ 3900 Frequency Band: 39091 38 .650-39 .80 GHz ONZODU-3900-001 This Class B digital apparatus compli es with Canadian ICES-003. Cet appareil nu mérique de la class e B est con forme à la no rme NMB-003 du Canada NEMA 3R / IP14 Made in USA Paten ts Pending FCC ID: This de vice compli es with Part 15, Class B of the FCC rules. Ope rations is subject to the foll owing two conditions: (1) This device may no t cau se ha rmful interferen ce, and (2) This de vice must acc ept an y interference received , includ ing interferen ce that may cau se undesired operation . Model No: E214313I. T.E. P/N 935-0028-003 Fiberless ™ 3900 Frequency Band: 39092 38 .650-39 .80 GHz ONZODU-39 00-001 This Class B digital apparatus compli es with Canadian ICES-003. Cet appareil numérique de la class e B est conforme à la norme NMB-003 du Canada 90 degrees Horizontal polarization 90 degrees Vertical po larization

Base Station ODU Internal IFM Inside the Base Station ODU

CPE ODU Internal Note: The IFM module is located under the MMW module and therefore is not visible

February 27, 2002 Dear Sir/madam, Ensemble Communications is submitting its family of Fiberless 3900 units for Certification under Part 101 of the FCC rules. The Fiberless 3900 units are transceivers that operate in the 38.65 GHz-39.8 GHz range. In response to your question regarding our compliance to section 101.131(c) of the FCC part 101 rules. We feel that the Fiberless 3900 series of transceivers meets the intent of section 101.131(c) for the following reasons: 1. There are indicator lamps on the Indoor units that indicate when the Outdoor Unit (transceiver) is operating. 2. The Power to the transceivers can be turned off at the source, which is the Indoor Units. 3. There is no RF exposure hazard to the general public when the transceivers are operated at full power. 4. There is sufficient power control circuitry/software to ensure that the transceiver will be shutdown should a failure be encountered (fail Safe). 5. The Outdoor Units are installed in a restricted area that is not accessible to the general public. 6. The Outdoor Unit cannot be operated independently of the Indoor Unit i.e. the transceiver only radiates signals when it is intended to radiate. The transceiver can only be put into transmit mode via the Indoor Unit. Sincerely, Jason Greenwood Member of Technical Staff Ensemble Communications Inc.

TEST REPORT FROM Ensemble Communications Inc. Test of the Fiberless TM 3900 Series Outdoor Unit - Base Station (BS) and Customer Premises Equipment (CPE) To CFR 47 part 101, subpart C (Oct 1998) Test Report Serial No.: Radio-TR-001-v0.1 This report supersedes: NONE None Remarks: Equipment complied with the specification [√ ] Equipment did not comply with the specification [ ] Results were within measurement uncertainties [ ] This Test Report is Issued Under the Authority of: ................................................................................................................... Sam Liu, Director of Hardware Development ................................................................................................................... Tested by Jason Greenwood ................................................................................................................... Checked by Sam Liu Copy No: Issue date: 12 February 2002 Issue to: Ensemble Communications, Inc. 9890 Towne Centre Drive San Diego, California 92121 Report#: Radio-TR-001-v0.1 Issue Date: 12 February 2002 Title: Test of the Fiberless TM 3900 Series Outdoor Unit - Base Station (BS) and Customer Premises Equipment (CPE) To CFR 47 part 101, subpart C (Oct 1998) Page: 2 of 144 This page has been intentionally left blank. Report#: Radio-TR-001-v0.1 Issue Date: 12 February 2002 Title: Test of the Fiberless TM 3900 Series Outdoor Unit - Base Station (BS) and Customer Premises Equipment (CPE) To CFR 47 part 101, subpart C (Oct 1998) Page: 3 of 144 CONTENTS 1 Executive Summary ................................................................................................ 5 2 Technical Details ..................................................................................................... 7 3 Tests Required......................................................................................................... 9 4 Measurements, Examinations and Derived Results........................................... 10 4.1 General observations.................................................................................................................. 10 4.2 Test Results ................................................................................................................................ 10 4.2.1 Transmitter characteristics ............................................................................................. 10 5 Test Equipment Used ............................................................................................ 21 6 Summary Of Test Results ..................................................................................... 21 7 Test set-up illustrations ........................................................................................ 22 7.1 Base Station (BS) Test Configuration......................................................................................... 22 7.2 Customer Premises Equipment (CPE) Test Configuration ........................................................ 24 8 Graphical Results .................................................................................................. 26 Report#: Radio-TR-001-v0.1 Issue Date: 12 February 2002 Title: Test of the Fiberless TM 3900 Series Outdoor Unit - Base Station (BS) and Customer Premises Equipment (CPE) To CFR 47 part 101, subpart C (Oct 1998) Page: 4 of 144 This page has been intentionally left blank. Report#: Radio-TR-001-v0.1 Issue Date: 12 February 2002 Title: Test of the Fiberless TM 3900 Series Outdoor Unit - Base Station (BS) and Customer Premises Equipment (CPE) To CFR 47 part 101, subpart C (Oct 1998) Page: 5 of 144 1 Executive Summary Purpose The purpose of this test program was to demonstrate compliance of the Ensemble Fiberless 3900 (CPE ODU) and the Fiberless 39XXX (Base Station ODU, where XXX are used to define the sector size and polarization) 39 GHz LMDS outdoor unit (ODU) transceivers against the current FCC technical standards for digital radio relay system authorization requirements. The ODU transceiver demonstrated compliance against the standard “FCC CFR 47, part 101, Subpart C (1998-10). EUT Description Consisting of four major components - the 16200 Series BS-IDU, 320 Series CPE-IDU, 3900 Series ODU transceivers, and the Fiberless Management System (FMS) - the Ensemble Fiberless¥ System represents the highest functionality, the most flexible, and most easily deployable system on the market today. The 16200 Series Base Station Indoor Unit and 320 Series Customer Premises Equipment Indoor Unit operate with a range of outdoor unit transceivers in the range of 10 to 45 GHz. The configuration tested operates in the 38.65 to 39.8GHz frequency band. Both the 16200 Series BS-IDU and the 320 Series CPE-IDU are connected to the 3900 Series ODU transceivers by a single RG-6 coaxial cable and can be separated by up to 1000 feet. The 16200 Series Base Station indoor unit, a 19” or 23” rack mountable, 10U box, features hot swappable cards for easy servicing and growth. It is designed to support up to eighteen 25 MHz carriers with network interfaces ranging from a single DS-3/E3 up to multiple OC-3s/STM-1s. Overall, a single base station rack can terminate up to 1.2 Gbit/s of backhaul network capacity supplied from TDM, IP, or ATM networks. The 320 series CPE indoor unit is a compact 1.5U high, rackable/stackable box supporting up to 12 service ports. Combining the functionality of a broadband, burst modem and a multiservice access concentrator, the unit is customisable and scalable through deployment of different types of cards in three expansion slots. Interfaces offered include the full range for voice and data connections including T1/E1, 10/100BT, and V.35. Available services include TDM, Frame Relay, Ethernet, Native IP, FXO and FXS. Flexible deployment schemes allow multiple subscribers to be connected to a single CPE indoor unit or multiple CPE indoor units to be connected to a single CPE outdoor unit. …

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FRN NUMBER: 0004-9806-86 2.1033(c) (1) NAME Ensemble communications, Inc. > 9890 Towne Centre Drive > San Diego, CA 92121 2.1033(c)(2) FCC ID ONZODU-3900-001 2.1033(c)(3) USER’S MANUAL The necessary information is contained in a separate document. Also see separate letter with reasoning for requesting their manual be withheld for confidentiality. 2.1033 (c)(4) TYPE OF EMISSIONS 25M0D7W 2.1033(c)(5) FREQUENCY RANGE 38.65 – 39.8 GHz 2.1033(c)(6) OPERATING POWER 17dBm QPSK (See test report) 14dBm 16 QAM (see test report) 13dBm 64 QAM (see test report) Note: Base station antenna gain: 21 dBi typical. Subscriber antenna gain: 35 dBi typical 2.1033(c)(7) MAXIMUM POWER RATING +55 dBW EIRP 2.1033(c)(8) DC VOLTAGES 2.1033(c)(9) TUNE-UP PROCEDURE No adjustment points 2.1033(c)(10) SCHEMATICS AND CIRCUITRY DESCRIPTION The necessary information is contained in a separate document. 2.1033(c)(11) LABEL AND PLACEMENT The necessary information is contained in a separate document. 2.1033(c)(12) SUBMITTAL PHOTOS The necessary information is contained in a separate document. 2.1033(c)(13) MODULATION INFORMATION The necessary information is contained in a separate document.

Base Station ODU Test Set Up for 40 GHz-200 GHz CPE ODU Test Set Up 40 GHz - 200 GHz CPE ODU Test Set up for 9kHz-40 GHz Base Station ODU Test Set UP for 9kHz-40GHz