NNA-EP-436EP-436 4-Line Wireless Telephone System

User’s Manual EP-436 Commercial 4-line Telephone System EnGenius Customer Service United States: 1-888-735-7888 Canada: 1-888-397-2788 2 Table of Contents Safety Instructions ..................................................... 4 General Safety Instructions ..................................... 4 Product Safety Instructions ..................................... 5 Battery Safety Instructions ...................................... 8 Regulatory Information ............................................... 9 Congratulations ....................................................... 12 Equipment Checklist ................................................ 13 Handset Illustration .................................................. 14 Handset Features .................................................... 15 Basic Handset Features ....................................... 15 Additional Handset Features ................................. 17 Base Illustration ....................................................... 22 Base Features ......................................................... 23 Basic Base Station Features ................................. 23 Additional Base Station Features .......................... 24 Administrator Features ......................................... 25 Charger Illustration .................................................. 27 Charger Features .................................................... 28 Getting Started ........................................................ 29 Base Station Installation ....................................... 29 Handset and Charger Installation .......................... 31 Basic Operations ..................................................... 32 Making a Telephone Call ...................................... 32 Making an Intercom Call ....................................... 32 Redial .................................................................. 33 Receiving a Telephone Call .................................. 33 Receiving an Intercom Call ................................... 34 Ending a Call: ....................................................... 35 Adjusting Receiver Voice Volume ......................... 35 Placing a Call On Hold ......................................... 35 Mute .................................................................... 36 Do Not Disturb (Silent Ring) .................................. 36 Key Guard ........................................................... 37 3 Battery Recharge and Replacement ..................... 37 Advanced Operations .............................................. 39 Handset Registration ............................................ 39 Advanced Registration: ........................................ 40 Handset Group Subscription ................................. 42 Call Transfer ........................................................ 43 3-Way Conferencing ............................................. 44 Call Forwarding .................................................... 45 Auto-Attendant (AA) ............................................. 47 Call Waiting .......................................................... 48 AA Configuration by Administrator ........................ 49 Change System Settings by Administrator ............ 51 Phonebook Operations ......................................... 52 Menu Operations .................................................. 56 Text Messaging .................................................... 61 Technical Specifications ........................................... 63 4 Safety Instructions Caution : Your wireless telephone gives you freedom and flexibility to stay in touch while you move around.However, the safe and responsible use of the phonedepends entirely on you.When using your phone equipment, safety instructionsshould be followed to avoid the risk of fire, electricshock, injury to person, and damage to property.General Safety Instructions1. When using your wireless phone, ensure your safety and the safety of others:a. Always watch where you are walking and standing. b. Don’t let a phone call distract you from working safely. 2. In an emergency: a. If an emergency occurs, dial the emergency phone number. Remember: if you are in anarea where your phone does not have a clearsignal from the base, it is highly probable thatthe call may not go through. Locate the nearestlandline telephone or other communicationsdevice to call for help. b. Emergency calls may not automatically provide emergency personnel with your name, phonenumber or location. Tell the operatori) Your name and phone number ii) The nature of the emergency iii) Whether police, fire, or medical assistance isneeded 5 iv) The exact location of the emergency,including address, cross streets, mileposts orlandmarks. 3. Notice to Hearing Aid Users: This phone system is compatible with inductively coupled hearing aids. 4. Notice to Cardiac Pacemaker Users: Preliminary studies done by the US FDA and others haveshown that, although interference to the implantedcardiac pacemaker may occur when operating veryclosely, wireless telephones “do not seem to pose asignificant problem for pacemaker wearers.”However, until more is known, FDA suggests thatpeople with pacemakers may want to takeprecautions when using or carrying a wirelesstelephone to ensure that there is ample distancebetween the telephone and the pacemaker. Do notcarry the handset in a breast pocket. If you haveany reason to suspect that interference is takingplace, turn off your handset immediately. Product Safety Instructions1. Read and understand all instructions.2. Follow all warnings and instructions including those marked on the product. 3. Changes or modifications to this product not expressively approved by the manufacturer will voidthe warranty and the FCC authorization to operatethe equipment. Use only manufacturer providedaccessories. 4. Do not use the telephone near water. Never spill liquid of any kind on this product. 5. Unplug the pro…

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Product Safety Instructions1. Read and understand all instructions.2. Follow all warnings and instructions including those marked on the product. 3. Changes or modifications to this product not expressively approved by the manufacturer will voidthe warranty and the FCC authorization to operatethe equipment. Use only manufacturer providedaccessories. 4. Do not use the telephone near water. Never spill liquid of any kind on this product. 5. Unplug the product from the wall telephone jack and power outlet before cleaning. Do not use liquid oraerosol cleaners. Use damp cloth for cleaning. 6. Do not place this product on an unstable cart, stand or table. The product may fall and cause personalinjury or damage to the product or other property.Place the base station and the charger on hard, flatsurfaces. 7. Power Outage: In the event of a power outage, your handsetcharger will not recharge the handset battery, andthe base station will not allow you to make anoutgoing call or take an incoming call. Both thecharger and the base station require electricity foroperation. You should have a telephone that does not require electricity available for use during poweroutage, or have a temporary backup power supply. 8. Slots or openings in the product’s housing are provided for ventilation. These openings must notbe blocked or covered. Placing the product on abed, carpeting, or other similar surface may blockthese openings and should be avoided. Thisproduct should never be placed near or over a 2 radiator or heat register, or in a built-in installationunless proper ventilation is provided. 9. Never push objects of any kind into this product through housing slots/openings as they maydamage the product, touch dangerous voltagepoints or short out parts that could result in fire,electric shock, or injury. 10. This product should be operated only from the type of power source indicated on the marking label. Ifyou are not sure of the type of power supply to yourhome, consult your dealer or local power company. 11. Do not overload wall power outlets and extension cords as this may result in fire or electric shock. 12. To avoid electric shock or burn, do not disassemble this product. Send this product to an authorizedservice center when service or repair work isrequired. Call Customer Service for locations nearyou. Opening or removing covers may expose youto dangerous voltages, electrical currents or otherrisks. Incorrect reassembling of the product maycause electric shock when the product issubsequently used. 13. Avoid using the product during a storm. There may be a risk of electric shock from lightning. 14. Do not place the product where persons can step, trip, or fall on the product. 15. Do not place conductive objects over or near the antenna. 16. Do not use the product to report a gas leak while in the vicinity of the leak. 17. Do not install the base station or the handset charger near microwave ovens, radios, TV sets,speakers, or other electrical equipment. Theseappliances may cause interference to the product orexperience interference from the product. 3 18. Unplug the base station or the charger adaptor from the wall power outlet and refer servicing to anauthorized service center under the followingconditions:a. If liquid had been spilled into the product.b. When the power supply cord or plug is damaged or frayed. c. If the product has been exposed to rain or water.d. If the product does not operate normally by following the operating instructions. e. If the product has been dropped or housing has been damaged. f. If the product shows a distinct change in performance. 19.This equipment is a transmitter that produces RF energy. The limits on human exposure to radioemission are set by FCC, this equipment complieswith those limits. The use of any accessories thathave not been approved is a violation of FCC rules. 20.The base is a mobile device and 20cm separation distance must be maintained between the end user and the antenna.

3245 146 th Place SE Suite 370 Bellevue, WA 98007 U.S.A. Telephone: +1-425-401-9600 Fax: +1-425-401-9614 1 January 17, 2002 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: This letter is to comply with Section 0.457(d)(2)(i) pertaining to confidential material. SuperTel Technologies, Inc., would like the following documents regarding this submission for FCC ID: NNA-EP-436 to be kept confidential. 1. Block Diagrams 2. Schematics 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, Jyun-cheng Chen, Ph.D. President.

FRN# = 0006-5559-24

Response to correspondence # 22983, EA519750 1. This product does not include a fixed terminal. 2. A description of the antenna has been uploaded.

EP- 436 External Antenna Kit Equipment Supplied 1-outdoor antenna 1-set mounting hardware 20 meter of coaxial cable Description of Antenna The external antenna is a 6dBi gain antenna. It is connected to the base through a 20- meter coax cable. Each end of the cable has unique connectors. The loss of the cable is 4dB at 900MHz. All mounting hardware is supplied.

SuperTel Technologies, Inc. 3245 146 th Place SE, Suite 370 Bellevue, WA 98007 June 20, 2002 Mary Ellen CKC Laboratories, Inc. 5473A Clouds Rest Mariposa, CA 95338 Tel: (800) 500-4362 Dear Ms. Ellen: I am writing to respond to your e-mail inquiry dated June 19, 2002, about SAR, average transmit power and transmit duty cycle in our products, EP-436, which are in the process of FCC Part 15 certification. 1. Handset SAR: According to the guidelines in Supplement C to OET-65, Section 3, Table 1, the limit for a 915 MHz handset transmitter is 0.3W. In addition, Footnote 19 states: “When applicable, a source-based time-averaging duty factor may be considered for determining compliance.” EP-436 employs TDMA multiple access scheme and the handset has a duty cycle of 12% (see detailed explanation below). With a design peak power of 630 mW (28 dBm), the average power is only 76 mW , thus meeting the SAR requirement. 2. Average Power: To accommodate 4 users per RF carrier (to handle 4 C.O. lines), EP-436 uses a 8-slot TDMA scheme with a frame length of 10 ms. The uplink (handset to base) frame and slot structures are shown as below: RX1T/R Switching RF Hopping Settling Data (98 bits)Sync (20 bits)Guard (10 bits) RX4RX3RX2 TX1TX4TX3TX2 10 ms 1.20 ms Data (77 bits) where • Frame length is 10 ms, and the hopping rate is 100 hops/second, i.e., one frame per hop. • TX1-TX4 time slot is 1201.17 μ s each, for a duty cycle of 12 % . • RF switching time is 199.87  μ s. • RX1-RX4 time slot is 1142.58 μ s. • RF hopping settling time is 425.13 μ s. • Speech codec is 8 kbps G.729A, FEC adds 8 kbps, there are 15 signaling bits per slot. • System Clock Frequency, Clk = 16.384 MHz • Internal DSP Clock Frequency, ClkDsp = Clk x 6 = 98.304 MHz • Digital to Analog sample rate is 8.192 MHz (i.e. 12 DSP clock) • Number of samples per transmitted bit = 48. • Bit period, Tb = (1/ClkDsp) x 576 = 5.859 μ s. • Channel data rate is 170.667 kbps. Attached plot in Figure 1 illustrates the duty cycle of an EP-436 handset. 3. Base SAR: According to the guidelines in Supplement C to OET-65, Section 3, Table 1, the limit is 2.5W for a 915 MHz mobile transmitter using indoor antenna that operates at 20 cm or more from nearby persons. On the reverse link (base to handset) of EP-436, the base station’s total transmit time is 1.14258 ms x 4 = 4.57032 ms, for a duty cycle of 45.7% . Therefore, with a design peak power of 630 mW, the average power is 0.28W , less than the 2.5 W limit for a mobile unit (or even the 0.3 W handset limit). The base station’s frame and slot structures are: TX1T/R Switching RF Hopping Settling Voice Data (98 bits)Sync (20 bits)Voice Data (77 bits) TX4 TX3 TX2RX1RX4RX3RX2 10 ms 1.14 ms Attached plot in Figure 2 illustrates the duty cycle of an EP-436 Base. 4. Safety Statements: The following statement will be added as Item 19 on Page 4 of the User’s Manual: "This equipment is a transmitter which produces RF energy. The limits on human exposure to radio emission are set by FCC, this equipment complies with those limits. The use of any accessories that have not been approved is a violation of FCC rules." 5. Belt Clip: Attached in Figure 3 is a photo of the Belt Clip used in EP-436. I appreciate your assistance in this application; please feel free to contact me if you have any question. Best regards, J. C. Chen, Ph.D. Tel: (425) 401-9600 x 1834 Fax: (425) 401-9614 E-mail: [email protected] Figure 1: EP-436 Handset duty cycle illustration. Figure 2: EP-436 Base Station duty cycle illustration. Figure 3: EP-436 Belt Clip.

1 1(6) PreparedDocNoRev Eric Filer Doc response/ApprovedDateFile 2002-03-06 Company Proprietary and Confidential EP-436 Base Station Version 0.50 Description Document 1.0Scope This document describes the EP-436 base station. This document also describes the connections to the outside world and the line interfaces. 2.0Definitions DSP1 = Digital Signal Processor #1 (handles the air interface) DSP2 = Digital Signal Processor #2 (handles the vocoder) uC = H8S/2134 Microcontroller HPI = Host Port Interface McBSP = Multi-channel Buffered Serial Port RFM = RF Module IF = Intermediate Frequency AA = Auto-attendant OGM = Outgoing Message MOH = Music on Hold L1 = Line Interface #1 L2 = Line Interface #2 L3 = Line Interface #3 L4 = Line Interface #4 PSTN = Public Switched Telephone Network PBX = Private Branch Exchange PCB = Printed Circuit Board PBCA = Printed Circuit Board Assembly CID = Caller Identification RSSI = Receive Signal Strength Indicator ATE = Automated Test Equipment 3.0Overview The EP-436 base station is a 4-line wireless PBX. It is capable of linking four handsets to four different PSTN lines simultaneously. (Handset to handset communication is done independent of the base.) The multiple access is achieved using TDMA. The base hardware supports the following functions: Caller ID detection (Type 1 and Type 2) 1 2(6) PreparedDocNoRev Eric Filer Doc response/ApprovedDateFile 2002-03-06 Company Proprietary and Confidential 3-way call conferencing Call forwarding Auto attendant Music on hold The base has three processors: two DSPs and one uC. DSP #1 handles the air interface processing. It communicates with the IF undersampler (a combined A/D and D/A) through the EPLD. The IF undersampler sends 10.7 MHz IF signals to the RFM and receives 10.7 MHz IF signals from the RFM. (10.7 MHz filtering is done inside the RFM for transmit, but the filter is located on the B1 board for receive.) DSP1 also communicates with DSP2 via a serial port, for the purpose of sending and receiving voice data (compressed). DSP #2 is responsible for voice compression and decompression (vocoder), auto attendant, auto routing, and interfacing to the four-channel codec. Auto routing involves connecting an air interface time slot to the appropriate four channel codec time slot (and therefore to the appropriate line interface). Voice data from the codec must be compressed by the vocoder before being sent to DSP1. Voice data from DSP1 (the air interface) must be decompressed before being sent to the codec. The four-channel codec is connected to DSP2 by a full duplex serial port. The analog side of the codec is connected to the four PSTN lines. The uC tracks the state of the base (i. e. who is talking to whom). It tells DSP2 which air interface time slot needs to be routed to which PSTN line, but DSP2 does the actual routing of the digital voice data. The uC also keeps track of system configuration data in the EEPROM, and processes the CID data from all four CID chips (one for each line). The uC monitors each line for ring detect and hang-up detect. Also, it controls the off-hook relays and the MOH analog multiplexers, allowing the uC to pick up any line or to put any line on hold. 4.0Electrical Interface The base station has the following connections to the outside world: DC power input jack RJ11 PSTN dual line input jack (2) Antenna connector Music on hold input jack Momentary push-button switches (2) LEDs (5) The DC power input shall be 7.0 V nominal. The rated current at 7.0 V shall be 1.0 amps. It will accept the plug from the Engenius supplied (UL approved) AC-DC wall adapter. It is preferable 1 3(6) PreparedDocNoRev Eric Filer Doc response/ApprovedDateFile 2002-03-06 Company Proprietary and Confidential that the wall adapter shall be a linear regulator, not a switching regulator (for improved noise performance). Filtering and hold-up capacitors are provided inside the base station. The line input jacks are implemented by two dual modular jacks. Each dual modular jack contains two RJ11. The first dual modular jack is for L1 and L2. The RJ11 jacks have the following configuration: Pin NumberStandard Color of Phone wire in plug Function 1UnusedUnused 2UnusedUnused 3RedRing (line 2) 4GreenTip (line 2) 5UnusedUnused 6UnusedUnused L3 and L4 have the same configuration on the second dual modular jack as is detailed above for L1 and L2 on the first dual modular jack. Also, a standard telephone can be plugged into the RJ11 jack, but it won’t have access to base station PBX features. Each line interface shall meet the requirements or FCC part 68 and EIA-470B. The line interface will present a balanced 600 ohm load (roughly) to the phone line in “off hook” condition. Ring detect and caller ID detect (Type 1 and Type 2) will be performed on the PSTN side of the line interface. There will be adequate isolation to meet regulatory requirements. DC loop current is limited to less than 100 mA. 5.0Mechanical The base station has two PCBAs and an RFM. The B1 PCBA contains most of circuitry. The RFM is mounted to the B1 PCBA and connected to it by a 20-pin connector. The B2 PCBA only contains 5 LEDs and is connected to the B1 PBCA through a cable to a six pin connector. Surface mount components were used as much as possible, and all of the components are placed on the top side of the B1 board. Most test points are accessible on the top and bottom side of the B1 board. The B1 board is approximately 9.8 in X 6.8 in and is a six layer board (top, bottom, two layers of internal signal routing, one power plane, and one ground plane). Maximum component height on the top of the PCB is 20 mm. Maximum allowable component height on the bottom is 3.1 mm. The PCB is laid out so that there is maximum distance between RF antenna and the line interfaces. There are provisions for a shielding can around the codec and 1 4(6) PreparedDocNoRev Eric Filer Doc response/ApprovedDateFile 2002-03-06 Company Proprietary and Confidential audio circuitry, the …

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Page 1 of 88 Report No: FC02-015 SUPERTEL TECHNOLOGIES, INC. TEST REPORT FOR THE EP-436 4-LINE WIRELESS TELEPHONE SYSTEM FCC PART 15 SUBPART C SECTIONS 15.207 & 15.247 COMPLIANCE DATE OF ISSUE: FEBRUARY 26, 2002 PREPARED FOR: SuperTel Technologies, Inc. 3245 146th Place SE, Suite 370 Bellevue, WA 98007 PREPARED BY: Joyce Walker CKC Laboratories, Inc. 5473A Clouds Rest Mariposa, CA 95338 P.O. No.: W.O. No.: STT-02-889 78176 Date of test: January 7 - Februrary 25, 2002 Report No.: FC02-015 This report contains a total of 88 pages and may be reproduced in full only. Partial reproduction may only be done with the written consent of CKC Laboratories, Inc. The results in this report apply only to the items tested, as identified herein. Page 2 of 88 Report No: FC02-015 TABLE OF CONTENTS Administrative Information .........................................................................................................4 Summary of Results.....................................................................................................................5 Conditions for Compliance ..........................................................................................................5 Approvals.....................................................................................................................................5 Equipment Under Test (EUT) Description ..................................................................................6 EUT Operating Frequency ...........................................................................................................6 Mode of Operation.......................................................................................................................6 15.31 Number of Channels ..........................................................................................................6 15.33 Frequency Ranges Tested ..................................................................................................6 15.203 Antenna Requirements.....................................................................................................6 15.205 Restricted Bands ..............................................................................................................6 15.215 Additional Provisions to the General Radiated Emission Limitations.............................6 Equipment Under Test .................................................................................................................7 Peripheral Devices .......................................................................................................................7 Report of Measurements ..............................................................................................................8 15.247(a)(1) Base - Channel Separation .........................................................................8 15.247(a)(1) Handset - Channel Separation....................................................................9 15.247(a)(1)(i) Base - Bandwidth Low Channel ............................................................10 15.247(a)(1)(i) Base - Bandwidth Middle Channel ........................................................11 15.247(a)(1)(i) Base - Bandwidth High Channel............................................................12 15.247(a)(1)(i) Handset - Bandwidth Low Channel .......................................................13 15.247(a)(1)(i) Handset - Bandwidth Middle Channel ...................................................14 15.247(a)(1)(i) Handset - Bandwidth High Channel ......................................................15 RSS-210 Base 99% Bandwidth - Low Channel .............................................................16 RSS-210 Base 99% Bandwidth - Middle Channel .........................................................17 RSS-210 Base 99% Bandwidth - High Channel .............................................................18 RSS-210 Handset 99% Bandwidth - Low Channel ........................................................19 RSS-210 Handset 99% Bandwidth - Middle Channel ....................................................20 RSS-210 Handset 99% Bandwidth - High Channel .......................................................21 15.247(a)(1)(i) Base Average Occupancy ......................................................................22 15.247(a)(1)(i) Handset Average Occupancy .................................................................23 15.247(a)(1)(i) Base Number Of Hops ...........................................................................24 15.247(a)(1)(i) Handset Number Of Hops......................................................................25 15.247(a)(1)(i) Base On Time.........................................................................................26 15.247(a)(1)(i) Handset On Time ...................................................................................27 Table 1: 15.247(b)(2) Base Highest Peak Output: EIRP ................................................28 Table 2: 15.247(b)(2)/15.31(e) Base Voltage Variation on Peak Power ........................29 Table 3: 15.247(c)/15.209 Base OATS Highest Emission Levels: 3MHz-10GHz.........30 Table 4: 15.247(c)/15.209 Base Terminal Highest Emission Levels: 9kHz-10GHz ......31 Table 5: 15.207 Base Highest Conducted Emission Levels ...........................................32 Table 6: 15.247(b)(2) Handset Highest Peak Output: EIRP ...........................................33 15.247(b)(2) Base Peak Output Antenna Terminal - Low..............................................34 15.247(b)(2) Base Peak Output Antenna Terminal - Middle..........................................35 15.247(b)(2) Base Peak Output Antenna Terminal - High .............................................36 15.247(b)(2) Handset Peak Output Antenna Terminal - Low.........................................37 Page 3 of 88 Report No: FC02-015 15.247(b)(2) Handset Peak Output Antenna Ter…

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PHOTOGRAPH SHO WING ANTENNA CONDUCTED EMISSIONS - BASE Ante nna Co nd uc ted - Base PHOTOGRAPH SHO WING ANTENNA CONDUCTED EMISSIONS - HANDSET Ante nna Co nd uc ted - Handse t PHOTOGRAPH SHOWING RADIATED EMISSIONS - BASE & CHARGER Front View of Base and Charger PHOTOGRAPH SHOWING RADIATED EMISSIONS - BASE & CHARGER Rear View of Base and Charger PHOTOGRAPH SHOWING RADIATED EMISSIONS - HANDSET Handset in Vertical Position - Back View PHOTOGRAPH SHOWING RADIATED EMISSIONS - HANDSET Handset in Vertical Position - Front View PHOTOGRAPH SHOWING RADIATED EMISSIONS - HANDSET Handset in Horizontal Side Position PHOTOGRAPH SHOWING RADIATED EMISSIONS - HANDSET Handse t in Horizontal Position PHOTOGRAPH SHO WING MAINS CONDUCTED EMISSIONS - BASE & HANDSET Mains Conducted Emissions - Front View PHOTOGRAPH SHO WING MAINS CONDUCTED EMISSIONS - BASE & HANDSET Mains Conducted Emissions - Side View