SAR Report 2

FCC ID: EHTDECT1

RF Exposure Info

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FCCID_808600

DAT-P-152/98-01 Report Dosimetric Assessment of the Portable Device Mitel Cordless Handset (FCC ID: EHTDECT1) According to the FCC Requirements May 21, 2007 IMST GmbH Carl-Friedrich-Gauß-Str. 2 D-47475 Kamp-Lintfort Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Customer Nemko AS Gasevikveien 8 N-2007 Kjeller The test results only relate to the items tested. This report shall not be reproduced except in full without the written approval of the testing laboratory. SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 1 of 29

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 2 of 29 Executive Summary The Cordless Handset (Portable Device) from Mitel operating in the 1920 MHz frequency range (US DECT Standard). The device has two integrated antennas. The objective of the measurements done by IMST was the dosimetric assessment of one device in the 1920 MHz frequency range. The handset was set to use one specific antenna and frequency during the measurements. The examinations have been carried out with the dosimetric assessment system „DASY4“. The measurements were made according to the Supplement C to OET Bulletin 65 of the Federal Communications Commission (FCC) Guidelines [OET 65] for evaluating compliance of mobile and portable devices with FCC limits for human exposure (general population) to radiofrequency emissions. All measurements have been performed in accordance to the recommendations given by SPEAG. The Mitel Cordless Handset (FCC ID: EHTDECT1) is in compliance with the Federal Communications Commission (FCC) Guidelines [OET 65] for uncontrolled exposure. prepared by: ........................................... reviewed by: ..................................... Alexander Rahn Dipl.-Ing. Chritoph Hennes test engineer quality assurance engineer IMST GmbH Carl-Friedrich-Gauß-Straße 2 D-47475 Kamp-Lintfort Tel. +49- 2842-981 373 Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fax +49- 2842-981 399 email: hennes@imst.de

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 3 of 29 Table of Contents 1 SUBJECT OF INVESTIGATION.................................................................................................................... 4 2 THE IEEE STANDARD C95.1-1999 AND THE FCC EXPOSURE CRITERIA....................................... 4 2.1 DISTINCTION BETWEEN EXPOSED POPULATION, DURATION OF EXPOSURE AND FREQUENCIES ........... 4 2.2 DISTINCTION BETWEEN MAXIMUM PERMISSIBLE EXPOSURE AND SAR LIMITS ....................................... 5 2.3 SAR LIMIT.................................................................................................................................................. 5 3 THE FCC MEASUREMENT PROCEDURE ................................................................................................. 6 3.1 GENERAL REQUIREMENTS......................................................................................................................... 6 3.2 DEVICE OPERATING NEXT TO A PERSON’S EAR ....................................................................................... 6 4 BODY-WORN CONFIGURATIONS .............................................................................................................. 9 4.1 POC (PTT) POSITION ............................................................................................................................. 10 4.2 PHANTOM REQUIREMENTS ...................................................................................................................... 10 4.3 TEST TO BE PERFORMED ......................................................................................................................... 10 5 THE MEASUREMENT SYSTEM ................................................................................................................. 10 5.1 PHANTOM ................................................................................................................................................. 12 5.2 PROBE ...................................................................................................................................................... 12 5.3 MEASUREMENT PROCEDURE .................................................................................................................. 13 5.4 UNCERTAINTY ASSESSMENT ................................................................................................................... 14 6 SAR RESULTS............................................................................................................................................... 15 7 APPENDIX....................................................................................................................................................... 16 7.1 ADMINISTRATIVE DATA ............................................................................................................................ 16 7.2 DEVICE UNDER TEST AND TEST CONDITIONS ......................................................................................... 16 7.3 TISSUE RECIPES ...................................................................................................................................... 16 7.4 MATERIAL PARAMETERS ......................................................................................................................... 17 7.5 SIMPLIFIED PERFORMANCE CHECKING ................................................................................................... 18 Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH 7.6 ENVIRONMENT ......................................................................................................................................... 21 7.7 TEST EQUIPMENT .................................................................................................................................... 21 7.8 CERTIFICATES OF CONFORMITY .............................................................................................................. 23 7.9 PICTURES OF THE DEVICE UNDER TEST .................................................................................................. 25 7.10 TEST POSITIONS FOR THE DEVICE UNDER TEST .................................................................................... 26 7.11 PICTURES TO DEMONSTRATE THE REQUIRED LIQUID DEPTH .................................................................. 28 8 REFERENCES................................................................................................................................................ 29

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 4 of 29 1 Subject of Investigation The product Cordless Handset (Portable Device) from Mitel operating in the 1920 MHz frequency range (US DECT Standard). The device has two integrated antennas. Fig. 1: Picture of the device under test. The objective of the measurements done by IMST was the dosimetric assessment of one device in the 1920 MHz frequency range. The handset was set to use one specific antenna and frequency during the measurements. 2 The IEEE Standard C95.1-1999 and the FCC Exposure Criteria In the USA the FCC exposure criteria [OET 65] are based on the withdrawn IEEE Standard C95.1-1999 [IEEE C95.1-1999]. This version was replaced by the IEEE Std C95.1-2005 in October, 2005. Both IEEE standards sets limits for human exposure to radio frequency electromagnetic fields in the frequency range 3 kHz to 300 GHz. One of the major differences in the newly revised C95.1 is the change in the basic restrictions for localized exposure, from 1.6 W/kg averaged over 1 g tissue to 2.0 W/kg averaged over 10 g tissue, which is now identical to the ICNIRP guidelines [ICNIRP 1998]. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH 2.1 Distinction Between Exposed Population, Duration of Exposure and Frequencies The American Standard [IEEE C95.1-1999] distinguishes between controlled and uncontrolled environment. Controlled environments are locations where there is exposure that may be incurred by persons who are aware of the potential for exposure as a concomitant of employment or by other cognizant persons. Uncontrolled environments are locations where there is the exposure of individuals who have no knowledge or control of their exposure. The exposures may occur in living quarters or workplaces. For exposure in controlled environments higher field strengths are admissible. In addition the duration of exposure is considered.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 5 of 29 Due to the influence of frequency on important parameters, as the penetration depth of the electromagnetic fields into the human body and the absorption capability of different tissues, the limits in general vary with frequency. 2.2 Distinction between Maximum Permissible Exposure and SAR Limits The biological relevant parameter describing the effects of electromagnetic fields in the frequency range of interest is the specific absorption rate SAR (dimension: power/mass). It is a measure of the power absorbed per unit mass. The SAR may be spatially averaged over the total mass of an exposed body or its parts. The SAR is calculated from the r.m.s. electric field strength E inside the human body, the conductivity σ and the mass density ρ of the biological tissue: E2 ∂T SAR = σ =c . ρ ∂t t →0 + (1) The specific absorption rate describes the initial rate of temperature rise ∂ T / ∂ t as a function of the specific heat capacity c of the tissue. A limitation of the specific absorption rate prevents an excessive heating of the human body by electromagnetic energy. As it is sometimes difficult to determine the SAR directly by measurement (e.g. whole body averaged SAR), the standard specifies more readily measurable maximum permissible exposures in terms of external electric E and magnetic field strength H and power density S, derived from the SAR limits. The limits for E, H and S have been fixed so that even under worst case conditions, the limits for the specific absorption rate SAR are not exceeded. For the relevant frequency range the maximum permissible exposure may be exceeded if the exposure can be shown by appropriate techniques to produce SAR values below the corresponding limits. 2.3 SAR Limit In this report the comparison between the FCC exposure limits and the measured data is made using the spatial peak SAR; the power level of the device under test guarantees that the whole body averaged SAR is not exceeded. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Having in mind a worst case consideration, the SAR limit is valid for uncontrolled environment and mobile respectively portable transmitters. According to Table 1 the SAR values have to be averaged over a mass of 1 g (SAR1g) with the shape of a cube. Standard Status SAR limit [W/kg] IEEE C95.1-1999 Replaced 1.6 Table 1: Relevant spatial peak SAR limit averaged over a mass of 1 g.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 6 of 29 3 The FCC Measurement Procedure The Federal Communications Commission (FCC) has published a report and order on the 1st of August 1996 [FCC 96-326], which requires routine dosimetric assessment of mobile telecommunications devices, either by laboratory measurement techniques or by computational modeling, prior to equipment authorization or use. In 2001 the Commission’s Office of Engineering and Technology has released Edition 01-01 of Supplement C to OET Bulletin 65. This revised edition, which replaces Edition 97-01, provides additional guidance and information for evaluating compliance of mobile and portable devices with FCC limits for human exposure to radiofrequency emissions [OET 65]. 3.1 General Requirements The test shall be performed in a laboratory with an environment which avoids influence on SAR measurements by ambient EM sources and any reflection from the environment itself. The ambient temperature shall be in the range of 20°C to 26°C and 30-70% humidity. 3.2 Device Operating Next to a Person’s Ear 3.2.1 Phantom Requirements The phantom is a simplified representation of the human anatomy and comprised of material with electrical properties similar to the corresponding tissues. The physical characteristics of the phantom model shall resemble the head and the neck of a user since the shape is a dominant parameter for exposure. 3.2.2 Test Positions As it cannot be expected that the user will hold the mobile phone exactly in one well defined position, different operational conditions shall be tested. The Supplement C to OET Bulletin 65 requires two test positions. For an exact description helpful geometrical definitions are introduced and shown in Fig. 2 - 3. There are two imaginary lines on the mobile, the vertical centerline and the horizontal line. The vertical centerline passes through two points on the front side of the handset: the midpoint of the width wt of the handset at the level of the acoustic output (point A on Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 2), and the midpoint of the width wb of the bottom of the handset (point B). The horizontal line is perpendicular to the vertical centerline and passes through the center of the acoustic output (see Fig. 2). The two lines intersect at point A.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 7 of 29 Fig. 2: Handset vertical and horizontal reference lines. Fig. 3: Phantom reference points. According to Fig. 3 the human head position is given by means of the following three reference points: auditory canal opening of both ears (RE and LE) and the center of the Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH closed mouth (M). The ear reference points are 15-17 mm above the entrance to the ear canal along the BM line (back-mouth), as shown in Fig. 3. The plane passing through the two ear canals and M is defined as the reference plane. The line NF (Neck- Front) perpendicular to the reference plane and passing through the RE (or LE) is called the reference pivoting line. Line BM is perpendicular to the NF line. With this definitions the test positions are given by

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 8 of 29 • Cheek position (see Fig. 4): Position the handset close to the surface of the phantom such that point A is on the (virtual) extension of the line passing through points RE and LE on the phantom (see Fig. 3), such that the plane defined by the vertical center line and the horizontal line of the phone is approximately parallel to the sagittal plane of the phantom. Translate the handset towards the phantom along the line passing through RE and LE until the handset touches the ear. While maintaining the handset in this plane, rotate it around the LE-RE line until the vertical centerline is in the plane normal to MB-NF including the line MB (called the reference plane). Rotate the phone around the vertical centerline until the phone (horizontal line) is symmetrical with respect to the line NF. While maintaining the vertical centerline in the reference plane, keeping point A on the line passing through RE and LE, and maintaining the phone contact with the ear, rotate the handset about the line NF until any point on the handset is in contact with a phantom point below the ear. Fig. 4: The cheek position. • Tilted position (see Fig. 5): Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 5: The tilted position.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 9 of 29 While maintaining the orientation of the phone retract the phone parallel to the reference plane far enough to enable a rotation of the phone by 15°. Rotate the phone around the horizontal line by 15°. While maintaining the orientation of the phone, move the phone parallel to the reference plane until any part of the phone touches the head. In this position, point A will be located on the line RE-LE. 3.2.3 Test to be Performed The SAR test shall be performed with both phone positions described above, on the left and right side of the phantom. The device shall be measured for all modes operating when the device is next to the ear, even if the different modes operate in the same frequency band. For devices with retractable antenna the SAR test shall be performed with the antenna fully extended and fully retracted. Other factors that may affect the exposure shall also be tested. For example, optional antennas or optional battery packs which may significantly change the volume, lengths, flip open/closed, etc. of the device, or any other accessories which might have the potential to considerably increase the peak spatial-average SAR value. The SAR test shall be performed at the high, middle and low frequency channels of each operating mode. If the SAR measured at the middle channel for each test configuration is at least 3.0 dB lower than the SAR limit, testing at the high and low channels is optional. 4 Body-worn Configurations The body-worn configurations shall be tested with the supplied accessories (belt-clips, holsters, etc.) attached to the device in normal use configuration. Devices with a headset output shall be tested with a connected headset. For purpose of determining test requirements, accessories may be divided into two categories: those that do not contain metallic components and those that do. For multiple accessories that do not contain metallic components, the device may be tested only with that accessory which provides the closest spacing to the body. For multiple accessories that contain metallic components, the device must be tested Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH with each accessory that contains a unique metallic component. If multiple accessories share an identical metallic component, only the accessory that provides the closest spacing to the body must be tested. If the manufacturer provides none body-worn accessories a separation distance of 1.5 cm between the back of the device and the flat phantom is recommended. Other separation distances may be used, but they shall not exceed 2.5 cm.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 10 of 29 4.1 PoC (PTT) Position The PoC (PTT) configurations shall be tested with the front of the device positioned at 25 mm from a flat phantom (display towards the phantom). 4.2 Phantom Requirements For body-worn and other configurations a flat phantom shall be used which is comprised of material with electrical properties similar to the corresponding tissues. 4.3 Test to be Performed For devices with retractable antenna the SAR test shall be performed with the antenna fully extended and fully retracted. Other factors that may affect the exposure shall also be tested. For example, optional antennas or optional battery packs which may significantly change the volume, lengths, flip open/closed, etc. of the device, or any other accessories which might have the potential to considerably increase the peak spatial-average SAR value. The SAR test shall be performed at the high, middle and low frequency channels of each operating mode. If the SAR measured at the middle channel for each test configuration is at least 3.0 dB lower than the SAR limit, testing at the high and low channels is optional 5 The Measurement System DASY is an abbreviation of „Dosimetric Assessment System“ and describes a system that is able to determine the SAR distribution inside a phantom of a human being according to different standards. The DASY4 system consists of the following items as shown in Fig: 6. Additional Fig: 7 shows the equipment, similar to the installations in other laboratories. • Fully compliant with all current measurement standards as stated in Fig. 9 • High precision robot with controller • Measurement server (for surveillance of the robot operation and signal filtering) Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH • Data acquisition electronics DAE (for signal amplification and filtering) • Field probes calibrated for use in liquids • Electro-optical converter EOC (conversion from the optical into a digital signal) • Light beam (improving of the absolute probe positioning accuracy) • Two SAM phantoms filled with tissue simulating liquid • DASY4 software • SEMCAD

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 11 of 29 Fig. 6: The DASY4 measurement system. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 7: The measurement set-up with two SAM phantoms containing tissue simulating liquid.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 12 of 29 The mobile phone operating at the maximum power level is placed by a non metallic device holder (delivered from Schmid & Partner) in the above described positions at a shell phantom of a human being. The distribution of the electric field strength E is measured in the tissue simulating liquid within the shell phantom. For this miniaturised field probes with high sensitivity and low field disturbance are used. Afterwards the corresponding SAR values are calculated with the known electrical conductivity σ and the mass density ρ of the tissue in the SEMCAD FDTD software. The software is able to determine the averaged SAR values (averaging region 1 g or 10 g) for compliance testing. The measurements are done by two scans: first a coarse scan determines the region of the maximum SAR, afterwards the averaged SAR is measured in a second scan within the shape of a cube. The measurement time takes about 20 minutes. 5.1 Phantom For the measurements the Specific Anthropomorphic Mannequin (SAM Twin Phantom V4.0) defined by the IEEE SCC-34/SC2 group and delivered by Schmid & Partner Engineering AG is used. The phantom is a fibreglass shell integrated in a wooden table. The thickness of the phantom amounts to 2 mm ± 0.2 mm. It enables the dosimetric evaluation of left and right hand phone usage and includes an additional flat phantom part for the system performance check and body worn measurements. The phantom set-up includes a coverage (polyethylene), which prevents the evaporation of the liquid. The details and the Certificate of conformity can be found in Fig. 10. 5.2 Probe For the measurements the Dosimetric E-Field Probes ET3DV6R or EX3DV4 with following specifications are used. They are manufactured and calibrated in accordance with FCC [OET 65] and IEEE [IEEE 1528-2003] recommendations annually by Schmid & Partner Engineering AG. ET3DV6: • Dynamic range: 5µW/g to > 100mW/g • Tip diameter: 6.8 mm • Probe linearity: ± 0.2 dB (30 MHz to 3 GHz) Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH • Axial isotropy: ± 0.2 dB • Spherical isotropy: ± 0.4 dB • Distance from probe tip to dipole centers: 2.7 mm • Calibration range: 900MHz / 1800MHz / 1900MHz / 1950 MHz / 2450MHz for head and body simulating liquid • Angle between probe axis (evaluation axis) and surface normal line: less than 30°

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 13 of 29 EX3DV4: • Dynamic range: 10µW/g to > 100mW/g (noise typically < 1µW/g) • Tip diameter: 2.5 mm • Probe linearity: ± 0.2 dB (30 MHz to 3 GHz) • Axial isotropy: ± 0.2 dB • Spherical isotropy: ± 0.4 dB • Distance from probe tip to dipole centers: 1.0 mm • Calibration range: : 900MHz / 1800MHz / 1900MHz / 1950 MHz / 2450MHz for head and body simulating liquid • Angle between probe axis (evaluation axis) and surface normal line: less than 30° 5.3 Measurement Procedure The following steps are used for each test position: • Establish a call with the maximum output power with the test mode provided by the manufacturer. • Measurement of the local E-field value at a fixed location (P1). This value serves as a reference value for calculating a possible power drift. • Measurement of the SAR distribution with a grid spacing of 15 mm x 15 mm and a constant distance to the inner surface of the phantom. Since the sensors can not directly measure at the inner phantom surface, the values between the sensors and the inner phantom surface are extrapolated. With this values the area of the maximum SAR is calculated by a interpolation scheme (combination of a least-square fitted function and a weighted average method). Additional all peaks within 2 dB of the maximum SAR are searched. • Around this points, a cube of 30 mm x 30 mm x 30 mm is assessed by measuring 7 x 7 x 7 points whereby the first two measurement points are within the required 10 mm of the surface. With these data, the peak spatial-average SAR value can be calculated within the SEMCAD software. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH • The used extrapolation and interpolation routines are all based on the modified Quadratic Shepard´s method [DASY4]. • Repetition of the E-field measurement at the fixed location (P1) and repetition of the whole procedure if the two results differ by more than ± 0.21dB.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 14 of 29 5.4 Uncertainty Assessment Table 2 includes the worst case uncertainty budget suggested by the [IEEE 1528-2003] and determined by Schmid & Partner Engineering AG. The expanded uncertainty (K=2) is assessed to be ± 21.7% and is valid up to 3.0 GHz. Uncertainty Probability Standard vi² or Error Sources Divisor ci Value Distribution Uncertainty veff Measurement System Probe calibration ± 5.9 % Normal 1 1 ± 5.9 % ∞ Axial isotropy ± 4.7 % Rectangular √3 0.7 ± 1.9 % ∞ Hemispherical isotropy ± 9.6 % Rectangular √3 0.7 ± 3.9 % ∞ Boundary effects ± 1.0 % Rectangular √3 1 ± 0.6 % ∞ Linearity ± 4.7 % Rectangular √3 1 ± 2.7 % ∞ System detection limit ± 1.0 % Rectangular √3 1 ± 0.6 % ∞ Readout electronics ± 1.0 % Normal 1 1 ± 1.0 % ∞ Response time ± 0.8 % Rectangular √3 1 ± 0.5 % ∞ Integration time ± 2.6% Rectangular √3 1 ± 1.5 % ∞ RF ambient conditions ± 3.0 % Rectangular √3 1 ± 1.7 % ∞ Probe positioner ± 0.4 % Rectangular √3 1 ± 0.2 % ∞ Probe positioning ± 2.9 % Rectangular √3 1 ± 1.7 % ∞ Algorithm for max SAR ∞ ± 1.0 % Rectangular √3 1 ± 0.6 % eval. Test Sample Related Device positioning ± 2.9 % Normal 1 1 ± 2.9 % 145 Device holder ± 3.6 % Normal 1 1 ± 3.6 % 5 Power drift ± 5.0 % Rectangular √3 1 ± 2.9 % ∞ Phantom and Set-up Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Phantom uncertainty ± 4.0 % Rectangular √3 1 ± 2.3 % ∞ Liquid conductivity (target) ± 5.0 % Rectangular √3 0.64 ± 1.8 % ∞ Liquid conductivity (meas.) ± 2.5 % Normal 1 0.64 ± 1.6 % ∞ Liquid permittivity (target) ± 5.0 % Rectangular √3 0.6 ± 1.7 % ∞ Liquid permittivity (meas.) ± 2.5 % Normal 1 0.6 ± 1.5 % ∞ Combined Uncertainty ± 10.8 % Table 2: Uncertainty budget of DASY4.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 15 of 29 6 SAR Results The Tables below contain the measured SAR values averaged over a mass of 1 g. Phantom SAR1g [W/kg] (Drift[dB]) Temperature Configuration Test Channel 2 Channel 0 Channel 4 Ambient Liquid Liquid depth: Position 1924.992 MHz 1921.536MHz 1928.448 MHz [° C] [° C] 16.4 cm 18.2 dBm Cheek Not Detactable 21.9 21.0 Left Side Tilted Not Detactable 21.9 21.0 Cheek Not Detactable 21.9 21.0 Right Head Tilted Not Detactable 21.9 21.0 Table 3: Measured head phantom results for the Mitel Cordless Handset, Antenna 1. Phantom SAR1g [W/kg] (Drift[dB]) Temperature Configuration Test Channel 2 Channel 0 Channel 4 Ambient Liquid Liquid depth: Position 1924.992 MHz 1921.536MHz 1928.448 MHz [° C] [° C] 16.4 cm 18.2 dBm Cheek Not Detactable 21.9 21.0 Left Side Tilted Not Detactable 21.9 21.0 Cheek Not Detactable 21.9 21.0 Right Head Tilted Not Detactable 21.9 21.0 Table 4: Measured head phantom results for the Mitel Cordless Handset, Antenna 2. The above mentioned power values are “conducted” power values, they were measured on the same sample which was prepared for the FCC approval. The values were delivered by Nemko Comlab. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH To control the output power stability during the SAR test the used DASY4 system calculates the power drift by measuring the e-field at the same location at the beginning and at the end of the measurement for each test position. These drift values can be found in the above tables labeled as: (Drift[dB]). This ensures that the power drift during one measurement is within 5%. The Mitel Cordless Handset (FCC ID: EHTDECT1) is in compliance with the Federal Communications Commission (FCC) Guidelines [OET 65] for uncontrolled exposure.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 16 of 29 7 Appendix 7.1 Administrative Data Date of validation: May 15, 2007 Date of measurement: May 15, 2007 Data stored: Nemko_6620_636 7.2 Device under Test and Test Conditions MTE: Mitel Cordless Handset, identical prototype Date of receipt: April 30, 2007 SN: 84442 SAR FCC ID: EHTDECT1 Equipment class: Portable device RF exposure environment: General Population/Uncontrolled Power supply: Internal Battery (Other batteries not available) Antenna: two integrated Tested Accessories, Body: N/A Measured Standards: US DECT (double slot mode) Method to establish a call: test mode, provided by the manufacturer Crest Factor: 12 (double slot mode) TX range: DECT: 1921.536 MHz – 1928.448 MHz RX range: DECT: 1921.536 MHz – 1928.448 MHz Used TX Channels: DECT: low: ch 0 center: ch 2, high: ch 4 Used Phantom: SAM Twin Phantom V4.0, as defined by the IEEE SCC-34/SC2 group and delivered by Schmid & Partner Engineering AG 7.3 Tissue Recipes The following recipes are provided in percentage by weight. 1900 MHz, Head: 45.65% Diethylenglykol-monobutylether 54.00% De-Ionized Water Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH 0.35% Salt 1900 MHz, Body: 29.68% Diethylenglykol-monobutylether 70.00% De-Ionized Water 0.32% Salt

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 17 of 29 7.4 Material Parameters For the measurement of the following parameters the HP 85070B dielectric probe kit is used, representing the open-ended coaxial probe measurement procedure. The measured values should be within ± 5% of the recommended values given by the FCC. Temperature Frequency εr σ [S/m] Ambient Liquid [° C] [° C] Recommended 1900 MHz 40.00 ± 2.00 1.40 ± 0.07 20.0 - 26.0 - Value (Head, Validation) Measured 40.40 1.39 21.80 21.0 Value Recommended 1925 MHz 40.00 ± 2.00 1.40 ± 0.07 20.0 - 26.0 - Value (Head, Measurements) Measured 40.40 1.42 21.80 21.0 Value Table 5: Parameters of the tissue simulating liquids. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 18 of 29 7.5 Simplified Performance Checking The simplified performance check was realized using the dipole validation kit. The input power of the dipole antenna was 250 mW (cw signal) and it was placed under the flat part of the SAM phantom. The target and measured results are listed in the Table 6 - 7 and shown in Fig. 8. The target values were adopted from the manufactures calibration certificates which are attached in the appendix. Table 8 includes the uncertainty assessment for the system performance checking which was suggested by the [IEEE 1528-2003] and determined by Schmid & Partner Engineering AG. The expanded uncertainty (K=2) is assessed to be ± 16.8%. Available Dipoles SAR1g εr σ [S/m] [W/kg] D1900V2, SN #535 9.18 38.40 1.40 Target Values Head D1900V2, SN #5d051 9.42 40.50 1.42 Table 6: Dipole target results as given by the manufactures calibration certificates . Temperature Used Dipoles SAR1g [W/kg] εr σ [S/m] Ambient Liquid [° C] [° C] 1900 MHz, Measured 9.93 40.40 1.39 21.80 21.0 SN: #5d051 Values Head Table 7: Measured dipole validation result. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 19 of 29 Test Laboratory: Imst GmbH, DASY Yellow (II); File Name: 150507_y_3536.da4 DUT: Dipole 1900 MHz SN: 5d051; Type: D1900V2; Serial: D1900V2 - SN5d051 Program Name: System Performance Check at 1900 MHz Communication System: CW; Frequency: 1900 MHz;Duty Cycle: 1:1 Medium parameters used: f = 1900 MHz; σ = 1.39 mho/m; εr = 40.4; ρ = 1000 kg/m3 Phantom section: Flat Section DASY4 Configuration: - Probe: EX3DV4 - SN3536; ConvF(8.19, 8.19, 8.19); Calibrated: 27.09.2006 - Sensor-Surface: 4mm (Mechanical Surface Detection) - Electronics: DAE4 Sn631; Calibrated: 11.07.2006 - Phantom: SAM Glycol 1340; Type: QD 000 P40 CB; Serial: TP-1340 - Measurement SW: DASY4, V4.7 Build 53; Postprocessing SW: SEMCAD, V1.8 Build 172 d=10mm, Pin=250mW/Area Scan (7x7x1): Measurement grid: dx=10mm, dy=10mm Maximum value of SAR (measured) = 11.0 mW/g d=10mm, Pin=250mW/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 89.7 V/m; Power Drift = 0.057 dB Peak SAR (extrapolated) = 18.4 W/kg SAR(1 g) = 9.93 mW/g; SAR(10 g) = 5.19 mW/g Maximum value of SAR (measured) = 11.1 mW/g Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 8: Validation measurement 1900 MHz Head (May 15, 2007), coarse grid. Ambient Temperature: 21.8° C, Liquid Temperature: 21.0° C.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 20 of 29 vi² Uncertainty Probability Standard Error Sources Divisor ci or Value Distribution Uncertainty veff Measurement System Probe calibration ± 4.8 % Normal 1 1 ± 4.8 % ∞ Axial isotropy ± 4.7 % Rectangular √3 1 ± 2.7 % ∞ Hemispherical isotropy ±0% Rectangular √3 1 ±0% ∞ Boundary effects ± 1.0 % Rectangular √3 1 ± 0.6 % ∞ Linearity ± 4.7 % Rectangular √3 1 ± 2.7 % ∞ System detection limit ± 1.0 % Rectangular √3 1 ± 0.6 % ∞ Readout electronics ± 1.0 % Normal 1 1 ± 1.0 % ∞ Response time ±0% Rectangular √3 1 ±0% ∞ Integration time ± 0% Rectangular √3 1 ±0% ∞ RF ambient conditions ± 3.0 % Rectangular √3 1 ± 1.7 % ∞ Probe positioner ± 0.4 % Rectangular √3 1 ± 0.2 % ∞ Probe positioning ± 2.9 % Rectangular √3 1 ± 1.7 % ∞ Algorithms for max SAR ∞ ± 1.0 % Rectangular √3 1 ± 0.6 % eval. Dipole Dipole Axis to Liquid ± 2.0 % Rectangular 1 1 ± 1.2 % ∞ Distance Input power and SAR drift ± 4.7 % Rectangular √3 1 ± 2.7 % ∞ mea. Phantom and Set-up Phantom uncertainty ± 4.0 % Rectangular √3 1 ± 2.3 % ∞ Liquid conductivity (target) ± 5.0 % Rectangular √3 0.64 ± 1.8 % ∞ Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Liquid conductivity (meas.) ± 2.5 % Normal 1 0.64 ± 1.6 % ∞ Liquid permittivity (target) ± 5.0 % Rectangular √3 0.6 ± 1.7 % ∞ Liquid permittivity (meas.) ± 2.5 % Normal 1 0.6 ± 1.5 % ∞ Combined Uncertainty ± 8.4 % Table 8: Uncertainty budget for the system performance check.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 21 of 29 7.6 Environment To comply with the required noise level (less than 12 mW/kg) periodically measurements without a DUT were conducted. Humidity: 40% ± 5 % 7.7 Test Equipment Serial Last Next Test Equipment Model Number Calibration Calibration DASY4 Systems Software Versions DASY4 V4.7 N/A N/A N/A Software Versions SEMCAD V1.8 N/A N/A N/A Dosimetric E-Field Probe ET3DV6 1579 01/2007 01/2008 Dosimetric E-Field Probe ET3DV6 1669 02/2007 02/2008 Dosimetric E-Field Probe EX3DV4 3536 09/2006 09/2007 Data Acquisition Electronics DAE 3 335 02/2007 02/2008 Data Acquisition Electronics DAE 4 631 07/2006 07/2007 Phantom SAM 1059 N/A N/A Phantom SAM 1176 N/A N/A Phantom SAM 1340 N/A N/A Phantom SAM 1341 N/A N/A Dipoles Validation Dipole D1900V2 535 12/2006 12/2007 Validation Dipole D1900V2 5d051 08/2006 08/2008 Material Measurement Network Analyzer HP8753D 3410A06555 12/2006 12/2007 Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Dielectric Probe Kit HP85070B US33020263 N/A N/A Table 9: SAR equipment.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 22 of 29 Last Next Test Equipment Model Serial Number Calibration Calibration Power Meters Power Meter, Agilent E4416A GB41050414 12/2006 12/2008 Power Meter, Agilent E4417A GB41050441 12/2006 12/2008 Power Meter, Anritsu ML2487A 6K00002319 12/2005 12/2007 Power Meter, Anritsu ML2488A 6K00002078 12/2005 12/2007 Power Sensors Power Sensor, Agilent E9301H US40010212 12/2006 12/2008 Power Sensor, Agilent E9301A MY41495584 12/2006 12/2008 Power Sensor, Anritsu MA2481B 031600 12/2005 12/2007 Power Sensor, Anritsu MA2490A 031565 12/2005 12/2007 RF Sources Network Analyzer HP8753D 3410A06555 12/2006 12/2007 Rohde & Schwarz SME300 100142 N/A N/A Amplifiers Mini Circuits ZHL-42 D012296 N/A N/A Mini Circuits ZHL-42 D031104#01 N/A N/A Mini Circuits ZVE-8G D031004 N/A N/A Radio Tester Rohde & Schwarz CMU200 835305/050 01/2007 01/2008 Willtek 4202S 0813151 N/A N/A Table 10: Test equipment, General. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 23 of 29 7.8 Certificates of conformity Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 9: Certificate of conformity for the used DASY4 system

Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 24 of 29 Fig. 10: Certificate of conformity for the used SAM phantom

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 25 of 29 7.9 Pictures of the device under test Fig. 11 show the device under test and the used accessories. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 11: Picture of the device under test

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 26 of 29 7.10 Test Positions for the Device under Test Fig. 12 - 15 show the test positions for the SAR measurements. Fig. 12: Cheek position, left side. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 13: Tilted position, left side.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 27 of 29 Fig. 14: Cheek position, right side. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH Fig. 15: Tilted position, right side.

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 28 of 29 7.11 Pictures to demonstrate the required liquid depth Fig. 16 show the liquid depth in the used SAM phantom. Fig. 16: Liquid depth for PCS 1900 Head measurements. Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH

SAR Report_Nemko_6620_636_FCC_DECT_Mitel_Handset Page 29 of 29 8 References [OET 65] Federal Communications Commission: Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, Supplement C (Edition 01-01) to OET Bulletin 65 (Edition 97-01), FCC, 2001. [IEEE C95.1-1999] IEEE Std C95.1-1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, Inst. of Electrical and Electronics Engineers, Inc., 1999. [IEEE C95.1-2005] IEEE Std C95.1-2005: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, Inst. of Electrical and Electronics Engineers, Inc., 2005. [ICNIRP 1998] ICNIRP: Guidelines for Limiting Exposure to Time-varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz), In: Health Physics, Vol. 74, No. 4, 494-522, 1998. [IEEE 1528-2003] IEEE Std 1528-2003: IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques. 1528-2003, December 19, 2003, The Institute of Electrical and Electronics Engineers. [NIST 1994] NIST: Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results, Technical Note 1297 (TN1297), United States Department of Commerce Technology Administration, National Institute of Standards and Technology, 1994. [DASY4] Schmid & Partner Engineering AG: DASY4 Manual. September 2005 [FCC 96-326] FCC 96-326, ET Docket No. 93-62, Report and Order, August 1, 1996 Dasy_Report_FCC_DECT_1900_1.1.doc/22.05.2006/CH


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Document Modified: 2007-05-22 11:17:24
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