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Wireless Networks DualMode Metrocell Cell Site Description 411-2021-111 Standard 01.01 June 1996 411-2021-111.
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Wireless Networks DualMode Metrocell Cell Site Description Product release: DualMode Metrocell Document release: Standard 01.01 Date: June 1996 Document Number: 411-2021-111 Copyright Country of print.
iv 411-2021-111 Standard 01.01 June 1996 Publication history June 1996 Standard 01.01 Initial release of document..
v DMS-MTX DualMode Metrocell Cell Site Description Contents Publication history iv About this document ix Intended audience for this publication ix How this publication is organized x Applicability of.
vi Contents 411-2021-111 Standard 01.01 June 1996 Cell Site Components 4-1 Customer Service Operations 4-3 Power and Grounding Requirements 5-1 Safety requirements 5-1 Power and grounding requirements.
Contents vii DMS-MTX DualMode Metrocell Cell Site Description Figure 3-4 Frame layout of a 120 ° STSR Metrocell site with one RF frame (front view) 3-9 Figure 3-5 Frame layout of a 120 ° STSR Metroc.
viii Contents 411-2021-111 Standard 01.01 June 1996 Table 4-1 Major components of a DualMode Metrocell 4-1 Table 5-1 Metrocell DC Power performance requirements 5-3 Table 5-2 Cable identification - No.
ix DMS-MTX DualMode Metrocell Cell Site Description About this document This publication is one of a set of documents that provide Northern Telecom (Nortel) customers with information and suggestions on the planning and maintenance of their DualMode Metrocell system.
x About this document 411-2021-111 Standard 01.01 June 1996 The document suite assumes that the reader possesses a basic knowledge of the cellular system and radio propagation and is familiar with measurement units incorporated in the system.
xi DMS-MTX DualMode Metrocell Cell Site Description List of terms A-Band The lower 333 channels (Channel 1 - 333) of the cellular band, normally assigned to a non-wireline operator in the US and Canada. The Expanded Spectrum provides 83 more channels, 50 (Channel 667 - 716) in the A ’-Band and 33 (channel 991 - 1023) in the A"-Band.
xii List of terms 411-2021-111 Standard 01.01 June 1996 Cell By theoretical design, it is the geographical representation of the cellular coverage area or service area defining both the associated size and shape. CSM2 Cell Site Monitor 2. A unit that provides analog testing and monitoring capabilities at the cell site.
List of terms xiii DMS-MTX DualMode Metrocell Cell Site Description FDMA Frequency Division Multiple Access. A frequency assignment arrangement whereby all users share the total frequency allotment and each frequency is assigned to a given user at access on a multiple user access basis.
xiv List of terms 411-2021-111 Standard 01.01 June 1996 Modulation The process of placing information on an RF carrier. The modulation technique may involve changing the amplitude, frequency, or phase of the carrier determined by the modulation index.
List of terms xv DMS-MTX DualMode Metrocell Cell Site Description RMC Receive Multicoupler. A device for amplifying the input received from a single antenna and providing multiple outputs for a group of receivers. RSSI Received Signal Strength Indicator.
xvi List of terms 411-2021-111 Standard 01.01 June 1996 ST Signaling Tone. In AMPS cellular, a 10 kHz tone transmitted on the Reverse V oice Channel (RVC) as a precursor to messaging activity, and for certain call- processing functions (acknowledgments, call termination).
1-1 DMS-MTX DualMode Metrocell Cell Site Description 1 Introduction Northern Telecom's DualMode Metrocell As cellular systems evolve to the digital format, service providers and mobile subscribers are confronted by a mixture of analog and digital technologies.
1-2 Introduction 411-2021-111 Standard 01.01 June 1996 Figure 1-1 System architecture of a DualMode Metrocell Figure 1-2 Digital ready cellular product There are at least two equipment frames in a Metrocell, a Universal Common Equipment (CE) Frame and a Metro Radio Frequency (RF) Frame.
Introduction 1-3 DMS-MTX DualMode Metrocell Cell Site Description Figure 1-3 Basic components of a DualMode Metrocell Legend: RIP Rack Interface Panel DRUM DualMode Radio Unit Monitor ACU Alarm Contro.
1-4 Introduction 411-2021-111 Standard 01.01 June 1996 The 800 MHz cellular band In an 800 MHz North American cellular system, a frequency spectrum of 50 MHz is available for service. Operating from 824 to 894 MHz, including the expanded spectrum, the system conforms to the AMPS IS-54 protocol.
Introduction 1-5 DMS-MTX DualMode Metrocell Cell Site Description The relationship between the channel number (N) and the frequency is: Channel number: 1 ≤ N ≤ 799 Receiver frequency (in MHz) = 0.03N + 825.000 Transmit frequency (in MHz) = 0.03N +870.
1-6 Introduction 411-2021-111 Standard 01.01 June 1996.
2-1 DMS-MTX DualMode Metrocell Cell Site Description 2 Cell Site Configurations Overview The DualMode Metrocell can be configured in the following ways: • Omni-directional transmit/receive • 120 .
2-2 Cell Site Configurations 411-2021-111 Standard 01.01 June 1996 Figure 2-1 shows the layout of an Omni (N=7) frequency reuse plan;. The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters, channels in Cell 2 are reused in Cell 2 of other clusters and so on.
Cell Site Configurations 2-3 DMS-MTX DualMode Metrocell Cell Site Description Figure 2-2 shows the layout of a 120 ° (N=7) sectorized frequency reuse plan. The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters, channels in Cell 2 are reused in Cell 2 of other clusters and so on.
2-4 Cell Site Configurations 411-2021-111 Standard 01.01 June 1996 60 ° sectorized configuration In a 60 ° (N=4) sectorized configuration, the 416 RF channels are divided among a group of four cells. Each cell contains a maximum of 104 RF channels, with six Control channels for each cell.
3-1 DMS-MTX DualMode Metrocell Cell Site Description 3 Cell Site Layouts This chapter provides information on the layout and cabling of the different DualMode Metrocell configurations. Note: The DualMode Metrocell supports only Transmit Receive Units (TRU) with Product Engineering Code (PEC) NTAX98AA.
3-2 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 (A TC 1 and A TC 2) are combined through one phasing transformer (located at A TC 2) and then connected to Duplexer position 2 and the main TX/RX Antenna. The output of the upper A TC (A TC 3) is connected to Duplexer position 3 and the diversity TX/RX Antenna.
Cell Site Layouts 3-3 DMS-MTX DualMode Metrocell Cell Site Description Figure 3-2 Block diagram of an omni Metrocell with up to 20 channels in one RF Frame TRU 1 6 5 4 3 2 1 TRU SHELF SPLITTER 1 TRU S.
3-4 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Figure 3-3 Block diagram of an omni Metrocell with 21 to 24 channels in one RF Frame TRU 1 6 5 4 3 2 1 TRU SHELF SPLITTER 1 TRU SHELF SPLITT.
Cell Site Layouts 3-5 DMS-MTX DualMode Metrocell Cell Site Description Transmit cabling In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module.
3-6 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Note: Additional RF Frames with 21 channels or more are connected to their respective TX/RX antennas in the same way as RF Frame 1.
Cell Site Layouts 3-7 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer.
3-8 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 120 ° STSR cell site configuration The Metrocell in a 120 ° STSR configuration uses at least two equipment frames, one CE Frame and one RF frame (see Figure 3-4). Each TRU/DPA Shelf and its associated A TC on the RF frame support one of the three sectors.
Cell Site Layouts 3-9 DMS-MTX DualMode Metrocell Cell Site Description Figure 3-4 Frame layout of a 120 ° STSR Metrocell site with one RF frame (front view) Figure 3-5 Frame layout of a 120 ° STSR M.
3-10 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 2) is required. For a frame with 21 channels or more, two duplexers (located in positions 2 and 3) are required.
Cell Site Layouts 3-11 DMS-MTX DualMode Metrocell Cell Site Description Figure 3-7 Block diagram of a 120 ° STSR Metrocell using three RF Frames Notes: 1. 2. For diagram clarity, only RF Frame 1 is shown. RF Frames 2 and 3 are connected and operated identically to that of RF Frame 1.
3-12 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Transmit cabling In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module.
Cell Site Layouts 3-13 DMS-MTX DualMode Metrocell Cell Site Description DPA 9 - Port1 (CCH) ATC3 - Port 1 DPA 9 - Port 2 ATC3 - Port 2 DPA 10 - Port1 ATC3 - Port 3 TRU/DPA Shelf 3 DPA 10 - Port2 (LCR).
3-14 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 DPA 1 - Port1 (CCH) ATC1 - Port 1 DPA 1 - Port2 ATC1 - Port 2 DPA 2 - Port1 ATC1 - Port 3 RF Frame 2 TRU/DPA Shelf 1 DPA 2 - Port2 (LCR) RF.
Cell Site Layouts 3-15 DMS-MTX DualMode Metrocell Cell Site Description RF Frame 3 TRU/DPA Shelf 2 DPA 8 - Port1 RF Frame 3 ATC 2 ATC2 - Port 7 DPA 8 - Port 2 ATC2 - Port 8 DPA 9 - Port1 ATC3 - Port 1.
3-16 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 DPA 1 - Port1 (CCH) ATC1 - Port 1 DPA 1 - Port2 ATC1 - Port 2 DPA 2 - Port1 ATC1 - Port 3 RF Frame 2 TRU/DPA Shelf 1 DPA 2 - Port2 (LCR) RF.
Cell Site Layouts 3-17 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna of each sector is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer of that sector.
3-18 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Main antenna, Sector X RMC 1A - A2 Splitter 1 Main antenna, Sector Y RMC 2A - A2 Splitter 2 Sector Y Main antenna, Sector Z RMC 3A - A2 TRU.
Cell Site Layouts 3-19 DMS-MTX DualMode Metrocell Cell Site Description Sector X Diversity antenna, Sector Z RMC 3B - B3 RF Frame 1 TRU Shelf 3 Splitter 6 Main antenna, Sector X RMC 1A - A4 Splitter 1.
3-20 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Component requirement Table 3-10 lists the components required for a 120 ° STSR Metrocell with one RF Frame and Table 3-11 lists the components required for a 120 ° STSR Metrocell with three RF Frames.
Cell Site Layouts 3-21 DMS-MTX DualMode Metrocell Cell Site Description 60 ° STSR cell site connection The Metrocell in a 60 ° STSR configuration uses at least three equipment frames, one CE Frame and two RF frames (see Figure 3-8). Each TRU/DPA Shelf and its associated A TC on one of the two RF frames support one of the six sectors.
3-22 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Figure 3-8 Frame layout of a 60 ° STSR Metrocell with two RF frames (front view) Figure 3-9 Typical frame layout of a 60 ° STSR Metrocell with four RF frames (front view) Note: A fifth RF Frame can be added for expanding three of the sectors to 24 channels.
Cell Site Layouts 3-23 DMS-MTX DualMode Metrocell Cell Site Description Figure 3-10 Block diagram of a 60 ° STSR Metrocell with two RF Frames TRU 1 6 5 4 3 2 1 DPA 1 DPA 4 TRU SHELF SPLITTER 1 TRU SH.
3-24 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Figure 3-10 Block diagram of a 60 ° STSR Metrocell with two RF Frames (continued) TRU 1 6 5 4 3 2 1 TRU SHELF SPLITTER 1 TRU SHELF SPLITTE.
Cell Site Layouts 3-25 DMS-MTX DualMode Metrocell Cell Site Description Figure 3-11 Block diagram of a 60 ° STSR Metrocell with four RF Frames Note: TRU 1 6 5 4 3 2 1 TRU SHELF SPLITTER 1 TRU SHELF S.
3-26 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Figure 3-11 Block diagram of a 60 ° STSR Metrocell with four RF Frames (continued) Control Channel for Sector Z Note: TRU 1 6 5 4 3 2 1 TR.
Cell Site Layouts 3-27 DMS-MTX DualMode Metrocell Cell Site Description Transmit cabling In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module.
3-28 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Table 3-12 PA to ATC connection for a 60 ° STSR Metrocell using two RF Frames From Through To DPA 1 - Port1 (CCH) ATC1 - Port 1 DPA 1 - Po.
Cell Site Layouts 3-29 DMS-MTX DualMode Metrocell Cell Site Description DPA 17 - Port1 (CCH) ATC5 - Port 1 DPA 17 - Port2 ATC5 - Port 2 DPA 18 - Port1 ATC5 - Port 3 RF Frame 2 TRU/DPA Shelf 2 DPA 18 -.
3-30 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Table 3-13 PA to ATC connection for a 60 ° STSR Metrocell using four RF Frames From Through To DPA 1 - Port1 (CCH) ATC1 - Port 1 DPA 1 - P.
Cell Site Layouts 3-31 DMS-MTX DualMode Metrocell Cell Site Description Table 3-13 PA to ATC connection for a 60 ° STSR Metrocell using four RF Frames (continued) From Through To DPA 9 - Port1 ATC3 -.
3-32 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Table 3-13 PA to ATC connection for a 60 ° STSR Metrocell using four RF Frames (continued) From Through To DPA 1 - Port1 (CCH) ATC1 - Port.
Cell Site Layouts 3-33 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna of each sector is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer of that sector.
3-34 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Main antenna, Sector V — primary sector RMC 5A - A3 Splitter 1 Main antenna, Sector W — right adjacent sector RMC 6A - A2 Splitter 2 Se.
Cell Site Layouts 3-35 DMS-MTX DualMode Metrocell Cell Site Description Main antenna, Sector Y — primary sector RMC 2A - A4 Splitter 1 Main antenna, Sector Z — right adjacent sector RMC 3A - A2 Sp.
3-36 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Table 3-15 RMC to splitter connections for a 60 ° STSR Metrocell with four RF Frames (continued) From Through To Main antenna, Sector V .
Cell Site Layouts 3-37 DMS-MTX DualMode Metrocell Cell Site Description Component requirement Table 3-16 lists the components required for a 60 ° STSR Metrocell with two RF Frame and Table 3-17 lists the components required for a 60 ° STSR Metrocell with four RF Frames.
3-38 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996.
4-1 DMS-MTX DualMode Metrocell Cell Site Description 4 Cell Site Components This chapter provides information on the description and Product Engineering Codes (PEC) of the major components used in a DualMode Metrocell.
4-2 Cell Site Components 411-2021-111 Standard 01.01 June 1996 Cable DATA 25-Pair TRU/DPA Shelf 1 NTFA1004 FRU Cable DATA 25-Pair TRU/DPA Shelf 2 NTFA1008 FRU Cable DATA 25-Pair TRU/DPA Shelf 3 NTFA10.
Cell Site Components 4-3 DMS-MTX DualMode Metrocell Cell Site Description Customer Service Operations Most of these components can be ordered from Nortel. Contact the following Nortel Customer Service Operations (CSO) when replacement is required: For United States customers: Northern Telecom Inc.
4-4 Cell Site Components 411-2021-111 Standard 01.01 June 1996.
5-1 DMS-MTX DualMode Metrocell Cell Site Description 5 Power and Grounding Requirements Cell sites are built to house communication equipment of the cellular telephone network. Cellular equipment can be located in stand-alone sites or in larger buildings in urban areas.
5-2 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 Power and grounding requirements Typical cell site radio equipment is powered by a +24 Vdc power system. However, the primary power for a DualMode Metrocell is +27 Vdc nominal.
Power and Grounding Requirements 5-3 DMS-MTX DualMode Metrocell Cell Site Description Table 5-1 Metrocell DC Power performance requirements Description Requirements Maximum Nominal Minimum Module or unit level operating voltage range 29.00 Vdc 27.00 Vdc 21.
5-4 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 The input voltage for other communication equipment is typically -48 Vdc nominal. The voltage range at the Power Distribution Centre (or other type of a branch panel) shall not exceed the range between -43.
Power and Grounding Requirements 5-5 DMS-MTX DualMode Metrocell Cell Site Description Frame power distribution Figure 5-1 shows the distribution network for supplying power to the cell site components in the CE and RF Frames.
5-6 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 System power protection There are three levels of protection at a Metrocell cell site. The first level is at the power plant which may consist of a hydraulic-magnetic breaker or slow- blow fuse.
Power and Grounding Requirements 5-7 DMS-MTX DualMode Metrocell Cell Site Description scheme if the system input power is less than 50V thus not requiring any ground (see CEC par 10-102).
5-8 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 DC coupled signals DC coupled signals are considered undesirable from a grounding point of view for the following reasons: • If a signal is routed to another system on a separate ground, then isolation is lost due to a connection via the signal return.
Power and Grounding Requirements 5-9 DMS-MTX DualMode Metrocell Cell Site Description Cable Identification It is a current practice to label or color-code insulated conductors. The following table shows the labeling and colors of insulated wires used in North America.
5-10 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996.
6-1 DMS-MTX DualMode Metrocell Cell Site Description 6 Datafilling a Metro Cell Site Datafill Overview This section outlines the differences which you should consider when datafilling a Metro site. It makes no attempt at dealing with the entire datafill procedure and assumes that you are familiar with the MTX Cell Site Datafill Procedures.
6-2 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 Table CLLI Table CLLI defines both a name and a quantity to a certain MTX trunk assignment. For the Metro application the number of trunks assigned in TRKGRSIZ should be capable of supporting the additional VCHs supported.
Datafilling a Metro Cell Site 6-3 DMS-MTX DualMode Metrocell Cell Site Description Table 6-3 MTX Datafill Alarm Points for Metro RF Frame Metro RF Shelves Fan Alarm Points Metro RF Frame ATC Alarm Poi.
6-4 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 The MTX Datafill alarm points for the CE frame are shown in Table 6-5. Table 6-4 MTX Alarm Points Datafill Numbers for Metro RF .
Datafilling a Metro Cell Site 6-5 DMS-MTX DualMode Metrocell Cell Site Description Table VCHINV, CCHINV, LCRINV The frequency assignment tables should be datafilled so that the TRU location in the Metro RF Frame with respect to the port card of the ICRM are correctly identified in the datafill tuple.
6-6 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 Frequency Assignment Example An example configuration is shown in Figure 6-1. In this example The ICRM virtual port card 0 is hardwired to the RIP Connector J205 and virtual port card 1 is hardwired to RIP Connector J206 (see Figure 6-2).
Datafilling a Metro Cell Site 6-7 DMS-MTX DualMode Metrocell Cell Site Description Figure 6-2 Example of Metro ICRM/TRU hardwire configuration J201 J209 J205 J202 J203 J204 J206 J207 J208 Connector As.
6-8 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996.
7-1 DMS-MTX DualMode Metrocell Cell Site Description Appendix A: DualMode Metrocell Cell Site Specifications System Configuration Channel capacity Up to 120 RF Channels for Omni cell sites Up to 8, 16.
7-2 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Transmit path insertion loss (including A TC, duplexer and cable losses): 8 channels -4.4 dB maximum 16 channels -4.7 dB maximum 24 channels -5.0 dB maximum Minimum antenna input RF power (at the ANT port of the duplexer): 8 channels 38.
DualMode Metrocell Cell Site Specifications 7-3 DMS-MTX DualMode Metrocell Cell Site Description DC Power Requirements Grounding As specified in Northern Telecom’s NTP-297-1001-156 V oltage Nominal +27.0 Vdc ± 0.5 Vdc Range +21.0 Vdc to 29.0 Vdc Ripple 400 millivolts Spurious 0.
7-4 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Paint Maple Brown # SCP-717-R1 Marking Nortel Logo Packaging Frames ShockAir bubble sheet and Styrofoam packaging .
DualMode Metrocell Cell Site Specifications 7-5 DMS-MTX DualMode Metrocell Cell Site Description Earthquake Meet earthquake requirements of Zone 1 and Zone 2 as defined by Bellcore TR-NWT-000063 Fixed equipment anchorage.
7-6 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Product Safety Cell site equipment complies with the following Safety Specification: • CSA C22.2 No. 225-M90, Telecommunication Equipment • CSA C22.2 No. 1, Radio, Television and Electronic Apparatus • UL-1459, Issue 2.
Frequency Plans 7-7 DMS-MTX DualMode Metrocell Cell Site Description Appendix B: Frequency Plans N=7 Frequency plan (Band A) Note: The control channels are indicated in bold in these frequency plans (they may be re-assigned as required).
7-8 Frequency Plans 411-2021-111 Standard 01.01 June 1996 N=7 Frequency plan (Band B) Group A1 B1 C1 D1 E1 F1 G1 A2 B2 C2 D2 E2 F2 G2 A3 B3 C3 D3 E3 F3 G3 Channel 334 335 336 337 338 339 340 341 342 3.
Frequency Plans 7-9 DMS-MTX DualMode Metrocell Cell Site Description N=4 Frequency plan (Band A) N=4 Frequency plan (Band B) Group A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 D3 A4 B4 C4 D4 A5 B5 C5 D5 A6 B6 C6 .
7-10 Frequency Plans 411-2021-111 Standard 01.01 June 1996.
Family Product Manual Contacts Copyright Confidentiality Legal statements DocInfo.
DualMode Metrocell Cell Site Description Manual Wireless Customer Documentation, Manager Nortel P .O. Box 833858 Richardson, Texas 75083-3858 Phone: (214) 684-1770 / Fax: (214) 684-3977 Copyright 1996 Northern Telecom NORTHERN TELECOM CONFIDENTIAL: The information contained in this document is the property of Northern Telecom.
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