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May 3, 2002 Federal Communications Commission Authorization and Evaluation Division FCC ID: N6536570 Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below: 1.Schematics 2.Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Roger Shen / QA Manager Shanghai Zi Bei Telesystems Co,. Ltd.

-----Original Message----- > From: Mike Kuo > Sent: Thursday, May 16, 2002 1:52 PM > To: 'Nancy' > Subject: RE: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, > AN02T2013 > > > Question #19: > > The processing gain data submitted is for 900MHz DSSS not for 2.4GHz. Since > FCC has released public notice today that eliminate processing gain > requirement for DSSS, the processing gain data will not be submitted to FCC. > However, it is your best interests to contact the applicant to inform them > this mis-representative of Data. > > Best Regards > > Mike Kuo / TCB Certifier > > -----Original Message----- > From: Nancy [mailto:[email protected]] > Sent: Wednesday, May 15, 2002 6:45 PM > To: Mike Kuo > Subject: Re: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, > AN02T2013 > > > Dear Mike, > > The response as below. > > Question 18: Processing Gain:In the processing data, it indicates "S/I = > Signal to noise required for a given error probability. In this case 1 x > 10-4 was used. ". However, according to FCC guideline, for data systems it > is typically around 1x10ee(-5), while for voice systems it may be as high as > 1x10ee(-2). If the selected BER varies greatly from such values, > justification must be provided for its choice. Please redo the processing > gain with 10-2 or provide the justification. > > The Answer: > > A BER of 1X10-3 is considered good quality for an voice-ADPCM codec. The > justification is that this is a voice system, and therefore, the BER of > 1X10-4 that was used for the processing gain measurement is even better > quality for a voice/ADPCM codec, and this surpasses the minimum requirement > for voice of 1X10-2 that the FCC requires. > > Best regards, > > Nancy > > ----- Original Message ----- > From: "Mike Kuo" <[email protected]> > To: "Nancy (E-mail)" <[email protected]> > Sent: Tuesday, May 14, 2002 7:58 AM > Subject: FW: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, > AN02T2013 > > > > > > > > -----Original Message----- > > From: CERTADM > > Sent: Monday, May 13, 2002 4:57 PM > > To: '[email protected]' > > Subject: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, > > AN02T2013 > > > > > > Notice_content > > ------------- > > Question 18: Processing Gain:In the processing data, it indicates "S/I = > > Signal to noise required for a given error probability. In this case 1 x > > 10-4 was used. ". However, according to FCC guideline, for data systems > it > > is typically around 1x10ee(-5), while for voice systems it may be as high > as > > 1x10ee(-2). If the selected BER varies greatly from such values, > > justification must be provided for its choice. Please redo the processing > > gain with 10-2 or provide the justification. > > > > Best Regards > > > > Mike Kuo / TCB Certifier > > The items indicated above must be submitted before processing can continue > > on the above referenced application. Failure to provide the requested > > information within 60 days of the original e-mail date may result in > > application dismissal and forfeiture of the filing fee. Also, please note > > that partial responses increase processing time and should not be > submitted. > > Any questions about the content of this correspondence should be directed > to > > the e-mail address listed below the name of the sender. > > From: Nancy [[email protected]] Sent: Tuesday, May 07, 2002 10:58 PM To: Mike Kuo Subject: Re: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, AN02T2013 Part 3 ----- Original Message ----- From: "Mike Kuo" <[email protected]> To: "Nancy (E-mail)" <[email protected]>; <[email protected]> Sent: Friday, May 03, 2002 7:24 AM Subject: FW: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, AN02T2013 > > > -----Original Message----- > From: CERTADM > Sent: Thursday, May 02, 2002 4:10 PM > To: '[email protected]' > Subject: Shanghai Zi Bei Telesystems Co., Ltd., FCC ID:N6536570, > AN02T2013 > > > Notice_content > ------------- > Question #1: Modifications were made during final compliance tests. Please > provide a cover letter signed by the applicant to acknowledge that all > modifications listed in this modification report will be incorporated into > each unit sold in the U.S.. > > Question #2: Section 6 of test report referred to 15.249 modification. This > is direct sequence spread spectrum which is subject to 15.247 requirement > not 15.249. > > Question #3: Since the handset is considered as portable transmitter. In > accordance with ANSI C63.4 section 13.1.4.1 procedure, handheld device shall > be investigated with three orthogonal axes. Through out the test report, > there is no place to indicate such procedure was followed. > > Question #4: Radiated emission tests / 15.205/15.209 : the distance > correction factor is 0 dB for harmonics and spurious emission up to 24 GHz. > Apparently you were testing with 3 meter distance so there in no distance > correction factors were used. There are several harmonic emission are very > close to the limits. Please perform additional radiated emission tests for > second and third harmonics on low, middle and high channel for both handset > and base station at distance of 1 meter and apply distance correction > factor. Submit such data. > > Question #5: Output power: As indicated in the test report, the design goal > for base station is 15dBm. However, the measured conducted output for base > station has max. 5.62dBm. Please explain the differences. > > Question #6: Test data contain in Page 57 - 60 of test report can not be > read. Please provide a clear copy of test data. > > Question #7: Processing gain section of test data can not be read. Please > provide a clear copy of processing gain information. > > Question #8: The processing gain tests are performed by the manufacturer as > indicated in the test report. The model name used in this processing gain > is different than the model name documented in the test report. There is no > evidence to show that such process…

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May 3, 2002 Model Name: 36570 It is acknowledged by Shanghai Zi Bei Telesystems Co., Ltd. that the modification list below will be installed to our Model: 3650 in order to comply with FCC Rules. These modifications will be incorporated into each unit sold under the rules. 1. For 15.205, RF module CD17,CD18 changed from 22p to 33p. decrees radiation power from base frequency. 2. For 15.247, RF module RD16 from 10k to 8.2k -- Adjustment down the RF PA BIAS. CD24,CD25 from 1.5p to 2p -- rematching CD24,CD25,LD5 network. Sincerely Yours, Roger Shen / QA Manager Shanghai Zi Bei Telesystems Co., Ltd.

Front View of EUT (Base Unit) Back View of EUT (Base Unit)

Total Set of EUT Front View of EUT (Handset) Back View of EUT (Handset) Internal Photo of EUT (Handset)

FCC ID LABEL FORMAT AND LOCATION Applicant: Shanghai Zi Bei Telesystems Co., Ltd. FCC ID: N6536570 FCC ID: N6536570 This device complies with part 15 of the FCC Rules. Operation is subject to the following three conditions: (1) This device may not cause harmful interference, (2) this device must accept any interference received, including interference that may cause undesired operation and (3) Privacy of communications may not be ensured when using this phone. FCC ID LABEL AREA

FCC ID LABEL FORMAT AND LOCATION Applicant: Shanghai Zi Bei Telesystems Co., Ltd. FCC ID: N6536570 FCC ID: N6536570 This device complies with part 15 of the FCC Rules. Operation is subject to the following three conditions: (1) This device may not cause harmful interference, (2) this device must accept any interference received, including interference that may cause undesired operation and (3) Privacy of communications may not be ensured when using this phone. FCC ID LABEL AREA

Internal Photo of EUT (Base Unit) Internal Photo of EUT (Base Unit) Internal Photo of EUT (Base Unit) Internal Photo of EUT (Base Unit) Internal Photo of EUT (Base Unit) Front View of EUT (Adaptor)

Back View of EUT (Handset) Internal Photo of EUT (Handset) Internal Photo of EUT (Handset) Internal Photo of EUT (Handset) Internal Photo of EUT (Handset) Internal Photo of EUT (Handset)

Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 1 of 82 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT INTENTIONAL RADIATOR CERTIFICATION TO FCC PART 15 SUBPART C REQUIREMENT OF 2.4GHz DSST multi-handset cordless telephone MODEL No.: 36570 BRAND NAME: BELL PHONE BY NORTHWESTERN BELL PHONES FCC ID: N6536570 REPORT NO: 020016-R ISSUE DATE: April 25, 2002 Prepared for Shanghai Zi Bei Telesystems Co., Ltd. No. 9333 Hu Min Road, Shanghai, China Prepared by C&C LABORATORY, CO., LTD. #B1, 1 st Fl., Universal Center, No. 183, Sec. 1, Tatung Rd., Hsi Chih, Taipei Hsien, Taiwan, R.O.C. TEL: (02)8642-2071~3 FAX: (02)8642-2256 Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 2 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 TABLE OF CONTENT Page 1. VERIFICATION OF COMPLIANCE........................................................................................3 2. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT)........................................................4 3. TEST LOCATION......................................................................................................................4 4. DESCRIPTION OF TEST MODES ...........................................................................................5 5. SUPPORT EQUIPMENT ...........................................................................................................5 6. EQUIPMENTMODIFICATIONS ..............................................................................................5 7. TEST PROCEDURES AND TEST RESULTS..........................................................................6 R ADIATED EMISSIONS (GENERAL REQUIREMENTS) .....................................................................6 T EST REQUIREMENT: 15.205 .......................................................................................................6 R ADIATED EMISSIONS................................................................................................................26 TEST REQUIREMENT: 15.209 (15.109).......................................................................................26 AC LINE CONDUCTED EMISSIONS..............................................................................................40 TEST REQUIREMENT: 15.207 .....................................................................................................40 M INIMUM 6 DB BANDWIDTH FOR DSSS....................................................................................45 TEST REQUIREMENT: 15.247(A)(2)............................................................................................45 RF POWER OUTPUT...................................................................................................................53 T EST REQUIREMENT: 15.247(B) ( CONDUCTED ) ....................................................................53 OUT OF BAND MEASUREMENTS.................................................................................................55 TEST REQUIREMENT: 15.247(C).................................................................................................55 DSSS P OWER DENSITY..............................................................................................................61 TEST REQUIREMENT: 15.247(D) ( CONDUCTED AND RADIATED )..............................................61 SECURITY CODE INFORMATION..................................................................................................69 PROCESSING GAIN OF A 2.4GHZ DSSS .....................................................................................69 T EST REQUIREMENT: 15.247(E)..............................................................................................69 APPENDIX 1 ............................................................................................................................76 PHOTOGRAPHS OF EUT...........................................................................................76 APPENDIX 2 ............................................................................................................................77 User Manual ..................................................................................................................77 APPENDIX 3 ............................................................................................................................78 Schematics ....................................................................................................................78 APPENDIX 4 ............................................................................................................................79 Block Diagram ..............................................................................................................79 APPENDIX 5 ............................................................................................................................80 Operational Description ................................................................................................80 APPENDIX 6 ............................................................................................................................81 Proposed FCC ID Label Format ...................................................................................81 APPENDIX 7 ............................................................................................................................82 Confidential Letter ........................................................................................................82 Report Numb…

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BLOSSOM Confidential BLOSSOM Communications Corp. 華謙科技股份(有)限公司 Page 1 of 1 台北市 南港區 南港路 3 段 50 巷 16 號 3 樓 3F,No.16, Lane 50, Sec.3 Nan kang Rd., Taipei, Taiwan. R.O.C. TEL: 886-2-27893078FAX: 886-2-27825811 DUTY CYCLE Tx:1ms Rx:1ms TDD FRAME FORMAT

15.205 / 15.209 Radiated Emissions Operation Mode: Handset Transmitting mode Test Date : May 6, 2002 Fundamental Frequency: CH 5 (2407.5MHz) Test By: Markba Lee Temperature : 28 Orthogonal: X Humidity : 60% Freq. Reading AF Closs Pre-ampFilterDistLevel LimitMargin Mark Pol (MHz) (dBuV) (dBuV)(dB) (dB) dBdB(dBuV/m)FCC_B(dB) (P/Q/A) (H/V) 3210.04 71.47 28.30 2.61 37.631 9.556.25 74.00-17.75 P V 3210.04 51.67 28.30 2.61 37.631 9.536.45 54.00-17.55 A V *4010.60 72.41 29.55 2.73 36.661 9.559.53 74.00-14.47 P V *4010.60 46.81 29.55 2.73 36.661 9.533.93 54.00-20.07 A V *4813.04 81.32 31.39 3.44 37.051 9.570.60 74.00-3.40 P V *4813.04 52.14 31.39 3.44 37.051 9.541.42 54.00-12.58 A V 5617.60 64.96 32.29 3.72 37.221 9.555.25 74.00-18.75 P V 5617.60 40.59 32.29 3.72 37.221 9.530.88 54.00-23.12 A V 7220.22 75.60 35.50 4.56 37.391 9.569.77 74.00-4.23 P V 7220.22 46.46 35.50 4.56 37.391 9.540.63 54.00-13.37 A V 9624.28 63.70 37.52 4.86 37.511 9.560.07 74.00-13.93 P V 9624.28 38.99 37.52 4.86 37.511 9.535.36 54.00-18.64 A V 3210.04 62.54 28.30 2.61 37.631 9.547.32 74.00-26.68 P H 3210.04 39.67 28.30 2.61 37.631 9.524.45 54.00-29.55 A H *4010.60 62.94 29.55 2.73 36.661 9.550.06 74.00-23.94 P H *4010.60 41.17 29.55 2.73 36.661 9.528.29 54.00-25.71 A H *4813.04 82.79 31.39 3.44 37.051 9.572.07 74.00-1.93 P H *4813.04 49.89 31.39 3.44 37.051 9.539.17 54.00-14.83 A H 7220.22 75.60 35.50 4.56 37.391 9.569.77 74.00-4.23 P H 7220.22 46.46 35.50 4.56 37.391 9.540.63 54.00-13.37 A H 9624.28 65.29 37.52 4.86 37.511 9.561.66 74.00-12.34 P H 9624.28 41.16 37.52 4.86 37.511 9.537.53 54.00-16.47 A H Note : 1. AF: Antenna Factor, Closs: Cable Loss, Pre-Amp: Preamp gain, Filter: High Pass Filter Insertion Loss (3.5GHz) Dist: Correction to extra plate reading to 3m specification distance 1M measurement distance: -9.5dB 2. Analyzer setting P(Peak): RBW=1MHz, VBW=1MHz, A(Average): RBW=1MHz, VBW=10Hz 3. Remark “*” means that Restricted band. Operation Mode: Handset Transmitting mode Test Date : May 6, 2002 Fundamental Frequency: CH 27(2439MHz) Test By: Markba Lee Temperature : 28 Orthogonal: X Humidity : 60% Freq. Reading AF Closs Pre-ampFilterDistLevel LimitMargin Mark Pol (MHz) (dBuV) (dBuV)(dB) (dB) dBdB(dBuV/m)FCC_B(dB) (P/Q/A) (H/V) 3254.20 68.81 28.33 2.69 39.601 9.551.73 74.00-22.27 P V 3254.20 48.64 28.33 2.69 39.601 9.531.56 54.00-22.44 A V *4065.22 71.31 29.68 2.78 36.681 9.558.59 74.00-15.41 P V *4065.22 39.69 29.68 2.78 36.681 9.526.97 54.00-27.03 A V *4880.60 80.81 31.55 3.49 37.081 9.570.27 74.00-3.73 P V *4880.60 51.16 31.55 3.49 37.081 9.540.62 54.00-13.38 A V 5694.68 60.32 32.35 3.74 37.231 9.550.68 74.00-23.32 P V 5694.68 39.61 32.35 3.74 37.231 9.529.97 54.00-24.03 A V *7319.60 72.02 35.65 4.53 37.401 9.566.30 74.00-7.70 P V *7319.60 44.79 35.65 4.53 37.401 9.539.07 54.00-14.93 A V 9757.08 62.67 37.62 4.91 37.551 9.559.15 74.00-14.85 P V 9757.08 35.68 37.62 4.91 37.551 9.532.16 54.00-21.84 A V 3254.20 60.32 28.33 2.69 39.601 9.543.24 74.00-30.76 P H 3254.20 43.19 28.33 2.69 39.601 9.526.11 54.00-27.89 A H *4065.22 62.29 29.68 2.78 36.681 9.549.57 74.00-24.43 P H *4065.22 40.24 29.68 2.78 36.681 9.527.52 54.00-26.48 A H *4880.60 82.60 31.55 3.49 37.081 9.572.06 74.00-1.94 P H *4880.60 48.01 31.55 3.49 37.081 9.537.47 54.00-16.53 A H *7319.60 71.93 35.65 4.53 37.401 9.566.21 74.00-7.79 P H *7319.60 46.14 35.65 4.53 37.401 9.540.42 54.00-13.58 A H 9757.08 63.79 37.62 4.91 37.551 9.560.27 74.00-13.73 P H 9757.08 36.68 37.62 4.91 37.551 9.533.16 54.00-20.84 A H Note : 1. AF: Antenna Factor, Closs: Cable Loss, Pre-Amp: Preamp gain, Filter: High Pass Filter Insertion Loss (3.5GHz) Dist: Correction to extra plate reading to 3m specification distance 1M measurement distance: -9.5dB 2. Analyzer setting P(Peak): RBW=1MHz, VBW=1MHz, A(Average): RBW=1MHz, VBW=10Hz 3. Remark “*” means that Restricted band. Operation Mode: Handset Transmitting mode Test Date : May 6, 2002 Fundamental Frequency: CH 48(2473.5MHz) Test By: Markba Lee Temperature : 28 Orthogonal: X Humidity : 60% Freq. Reading AF Closs Pre-ampFilterDistLevel LimitMargin Mark Pol (MHz) (dBuV) (dBuV)(dB) (dB) dBdB(dBuV/m)FCC_B(dB) (P/Q/A) (H/V) 3298.02 65.08 28.36 2.77 37.561 9.550.15 74.00-23.85 P V 3298.02 45.86 28.36 2.77 37.561 9.530.93 54.00-23.07 A V *4122.10 73.14 29.81 2.83 36.711 9.560.57 74.00-13.43 P V *4122.10 40.98 29.81 2.83 36.711 9.528.41 54.00-25.59 A V *4947.78 81.39 31.70 3.55 37.111 9.571.03 74.00-2.97 P V *4947.78 50.51 31.70 3.55 37.111 9.540.15 54.00-13.85 A V 5769.34 55.61 32.40 3.75 37.241 9.546.02 74.00-27.98 P V 5769.34 36.11 32.40 3.75 37.241 9.526.52 54.00-27.48 A V *7421.64 67.27 34.14 4.30 37.321 9.559.89 74.00-14.11 P V *7421.64 41.06 34.14 4.30 37.321 9.533.68 54.00-20.32 A V *8239.68 53.73 35.79 4.50 37.411 9.548.11 74.00-25.89 P V *8239.68 35.76 35.79 4.50 37.411 9.530.14 54.00-23.86 A V 9887.20 65.49 37.62 4.91 37.551 9.561.97 74.00-12.03 P V 9887.20 40.16 37.62 4.91 37.551 9.536.64 54.00-17.36 A V 3298.02 58.87 28.36 2.77 37.561 9.543.94 74.00-30.06 P H 3298.02 46.02 28.36 2.77 37.561 9.531.09 54.00-22.91 A H *4122.10 65.11 29.81 2.83 36.711 9.552.54 74.00-21.46 P H *4122.10 44.42 29.81 2.83 36.711 9.531.85 54.00-22.15 A H *4947.78 81.76 31.70 3.55 37.111 9.571.40 74.00-2.60 P H *4947.78 48.66 31.70 3.55 37.111 9.538.30 54.00-15.70 A H 5769.34 52.88 32.40 3.75 37.241 9.543.29 74.00-30.71 P H 5769.34 36.19 32.40 3.75 37.241 9.526.60 54.00-27.40 A H 6597.04 54.79 34.14 4.30 37.321 9.547.41 74.00-26.59 P H 6597.04 40.69 34.14 4.30 37.321 9.533.31 54.00-20.69 A H *7421.64 73.28 35.79 4.50 37.411 9.567.66 74.00-6.34 P H *7421.64 45.52 35.79 4.50 37.411 9.539.90 54.00-14.10 A H 9887.20 62.93 37.72 4.92 37.591 9.559.48 74.00-14.52 P H 9887.20 40.79 37.72 4.92 37.591 9.537.34 54.00-16.66 A H Note : 1. AF: Antenna Factor, Closs: Cable Loss, Pre-Amp: Preamp gain, Filter: High Pass Filter Insertion Loss (3.5GHz) Dist: Correction to extra plate reading to 3m specification distance 1M measurement distance: -9.5dB 2. Analyzer setting P…

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Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 36 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 Radiated Emission Setup Photos - Handset (Worst Emission Position) Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 37 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 Radiated Emission Setup Photos - Handset (Worst Emission Position) Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 38 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 Radiated Emission Setup Photos – Base unit (Worst Emission Position) Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 39 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 Radiated Emission Setup Photos – Base unit (Worst Emission Position) Report Number: 020016-R FCC ID: N6536570 Date: April 25, 2002 Accredited Lab. of NEMKO, A2LA, BSMI, CNLA NEMKO Authorization #: ELA 124 Page 44 Listed Lab. of FCC, VCCI, MOC A2LA Certificate #: 824.01 (for Emission) This report shall not be reproduced except in full, without the written approval of C&C Rev. 02 Conducted Emission Setup Photos (Worst Emission Position)