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Trango Broadband Wireless M915S User Manual

900 mhz wireless broadband system
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M915S™
900 MHz Wireless Broadband System
USER MANUAL
December 15, 2005
Revision A
for Firmware Version 2.0

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  • Page 1 M915S™ 900 MHz Wireless Broadband System USER MANUAL December 15, 2005 Revision A for Firmware Version 2.0...

  • Page 2: Table Of Contents

    Loading Multiple SUs into the SUDB using DLOAD Command ................39 SNMP ..................................39 Objects for Monitoring and Control ......................... 40 SNMP Setup ................................41 Appendix A Command Set Reference .......................... 42 Appendix B Specifications ............................46 Trango Broadband Wireless — M900S User Manual Rev. C page ii...
  • Page 3 Figure 9: M915S Mounting Hardware Assembly ......................27 Figure 10: Alternative Mounting ..........................28 Figure 11: Articulation for M915S with Mono Pod Mount (not supplied) ..............29 Figure 12: Grounding of the Radio ..........................29 Trango Broadband Wireless — M900S User Manual Rev. C...

  • Page 4: Preface

    Preface Preface This manual covers basic configuration and installation of the M915S Wireless Broadband System and applies to the following radio part numbers: M915S-AP 900 MHz Access Point M915S-SU 900 MHz Subscriber Unit with integrated antenna and connector for external antenna FCC Information This device complies with Part 15 of FCC Rules and Regulations.

  • Page 5: Section 1 Introduction

    Technical Support for access to the Professional Installation Guide. The M915S system consists of two types of radios: Access Points (APs) and Subscriber Units (SUs). Up to 126 subscriber units can be supported by a single AP, which acts as a hub in a star configuration. The AP delivers wireless broadband service (Ethernet connectivity) to one or more SUs according to a proprietary adaptive dynamic polling algorithm called SMARTPolling™.

  • Page 6: Smartpolling™ & Bandwidth Throttling

    SmartPolling™ & Bandwidth Throttling One of the major advantages of the M915S system is the ability of the AP to handle multiple SU connections and share the 3 Mbps data throughput efficiently. Bandwidth allocation is managed by the AP’s SMARTPolling algorithm according to provisioning rules set up by the system administrator.

  • Page 7: Section 2 Hardware Overview

    Figure 3: Bottom of Radio At the bottom of the M915S are two access ports: a twist-on weatherproof cable port for RJ-45 Ethernet (and PoE), and a translucent access cover plug over the unit’s diagnostic LEDs and reset button. The LEDs will be discussed later in this text.

  • Page 8: Section 3 Getting Started

    Connect a Cat-5 (straight through) Ethernet cable (we recommend shielded twisted pair) between the ODU (out door unit) port of the J-box and the RJ-45 connector on the radio. Note that this cable will carry power-over-Ethernet (PoE). Trango Broadband Wireless — User Manual M915S Rev. 1 Page 4...

  • Page 9: Radio Management Concepts

    SU) is enabled on the AP. Switches will be covered later in this text. Opmode To fully understand radio management of the M915S system, it is important to be familiar with the concept of operation mode or “Opmode.” APs and SUs can be in one of two Opmodes (“ON” or “OFF”). When in Opmode “OFF,” the AP is not transmitting and it is not attempting to associate with SUs.

  • Page 10: Browser Interface

    Passwords In order to login to an M915S radio (either through telnet or through the web browser interface), the user must know the IP address and password. Both APs and SUs feature two levels of passwords, Read Write (RW) and Read Only (RO).
  • Page 11 Type the password (default trango) and continue. This will bring up the radio’s System Information page. Web Browser System Information Page Note: System Information page for the SU is similar and is covered in detail later in this text. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 7...

  • Page 12: Command Line Interface

    To terminate a CLI session (Telnet or Serial) type the command logout. Note: Type help or ? for a listing of all the CLI commands. Type help <command>, for the syntax of a particular command. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 8...

  • Page 13: Troubleshooting

    PC’s subnet is routable to radio’s IP address. If you still cannot access the radio’s management interfaces, consult the troubleshooting guide that is available at www.trangobroadband.com in the Technical Support area of the website. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 9...

  • Page 14: Section 4 Basic Configuration Via Browser Interface

    Evaluate Link Quality The M915S uses the concept of “association” to indicate that the APs and SUs are communicating. If all parameters are properly set, the AP will begin actively searching for the SUs in its SUDB. Once an active SU is detected, the authentication and association process will begin.
  • Page 15 4. If SU will be part of an SU to SU group, enter the SU to SU group number. 5. CIR up: (SU to AP Committed Information Rate) – minimum upstream bandwidth for the SU in Kbps. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 11...

  • Page 16: Configure Other Basic Ap Parameters

    The current channel and antenna polarization of the unit when in Opmode "ON." To configure the AP’s other basic settings, complete the following steps: 1. Connect to the AP (see Getting Started) and open the Configuration page. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 12...
  • Page 17 HTTP session when you Save and Activate Settings. 5. Choose Active Channel (1-4). 6. Choose Antenna Polarization (H or V), or choose E for an external antenna. Only use E for M915S-SU- EXT model.

  • Page 18: Configure Basic Su Parameters

    Allow approximately 60 seconds for the radios to complete the boot-up cycle and to associate. If the AP is busy servicing many SUs, the association process may take slightly longer. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 14...

  • Page 19: Led Summary

    100 BaseT. It is off when link speed is 10 BaseT or not connected. Figure 7: LED Summary LED / RESET BUTTON WINDOW Figure 8: LED and Reset Button Window Trango Broadband Wireless — User Manual M915S Rev. 1 Page 15...

  • Page 20: Rf Link Loopback Test

    1600 byte packets are sent and received between the SU and AP at 50 millisecond intervals over the time specified. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 16...

  • Page 21: Su Ranging Test

    Channel Table: Assigns channel numbers to actual frequencies of operation. Default settings allow the largest number of channels (4) within the band, while still maintaining 6 MHz channel spacing. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 17...

  • Page 22: Other Key Parameters

    FPGA Version: Low-level field programmable gate array firmware currently loaded on the radio. Normally the FPGA firmware will not require upgrading. IMPORTANT: The M915S FPGA load is not the same as the M900S FPGA. Do not attempt to load the M900S FPGA into the M915S or vice versa.

  • Page 23: Site Survey Page

    Click "Start Survey." A survey of the default 4 channels will be performed. Results are reported in dBm per channel as average and peak. A channel is reported to be "Clear" if the peak and average are below the RF RX Threshold by more than 8 dB. Trango Broadband Wireless — User Manual M915S Rev. 1 Page 19...

  • Page 24: Section 5 Basic Configuration Via Cli

    Specifies the cell or cluster to set baseid <baseid> which the AP belongs. Base ID must match in AP and SU in Example: order to establish a wireless #>set baseid aa12 link. Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 25 [<on|off>] TFTPD should be turned on to Example: import a file into the radio #>tftpd on (such as new firmware). Default is off. TFTPD will revert to Off after rebooting. Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 26 SU to SU This software switch (3) sw 3 [<on|off>] (default is off) enables/disables the SU to SU Example: feature. When SU to SU is #>sw 3 on Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 27: Subscriber Unit Database (Sudb) Settings

    The default CIR/MIR setting is 3000 kbps for upstream and downstream. To change the SU’s CIR/MIR settings, use the following command: sudb cirmir <suid|all> <cir dn> <cir up> <mir dn> <mir up> Example: Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 28: Subscriber Unit Basic Settings

    Important! When changing settings, it is usually necessary to type the save ss command in order to update the radio’s flash memory. If you do not type the save ss command, the settings will be lost the next time the radio is rebooted or power cycled. Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 29 [<ch#> <v|h>] Example: #>freq 3 This command will change the channel of the AP to 3. Use the antenna command to select an antenna Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 30 28 characters can be stored. Counters: This is an average of wired Informational Parameter RF TX RF RX and wireless, transmit and Eth TX Eth RX received traffic in kilobits per second. Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 31: Section 6 Mounting Hardware

    Mounting Hardware Not Supplied ITEM PART NUMBER QTY. Radio #10 x 3" Threaded Rod #10 Keps Nut "V" Bracket Mono Pod Mount (Not Supplied) Figure 9: M915S Mounting Hardware Assembly Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 32: Figure 10: Alternative Mounting

    Alternate Mounting Configuaration 5 Not Supplied ITEM PART NUMBER QTY. Radio #10 x 3" Threaded Rod #10 Keps Nut "V" Bracket Mono Pod Mount (Not Supplied) Figure 10: Alternative Mounting Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 33: Cabling And Grounding Considerations

    4 X M u s t B e l o o s e n e d f o r U p / D o w n T i l t Figure 11: Articulation for M915S with Mono Pod Mount (not supplied) Cabling and Grounding Considerations...
  • Page 34 Leave approximately 1 mm around the cat-5. It is important to provide strain relief and a drip loop for STP Cat-5 cables. Do not mount the radio upside down. Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 35: Section 7 Deployment

    If it is not possible to use a clean channel/polarization combination, there are various methods available to mitigate the affects of interference. These methods include the use of the RFRX Threshold settings, or the use of external shields and external narrower beam antennas. Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 36: Ap Search And Su Antenna Alignment

    AP, and to precisely align the SU antenna for maximum signal strength. Although it is possible to rely upon the SU’s LEDs for alignment, more precise RSSI readings are available from the command ssrssi. Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 37 –60 dBm or stronger. If no LEDs are lit, there is not sufficient signal strength to establish a wireless link. Lit LEDs Signal Strength 0 LED -80 dBm 1 LED -75 dBm 2 LED -70 dBm Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 38: Link Management Commands

    Collocation and Channel Planning With proper channel planning and adherence to installation guidelines, multiple M915S APs may co-exist and operate interference-free on the same tower or building. The main consideration when collocating APs is to ensure at least 10 ft.
  • Page 39 AP will poll the SU for SU’s current status and will provide information such as SU range from AP, signal strength received at SU from AP, SU temperature, etc. . Example: > su 88 88] pr [as] y [d] 0.0 [rssi at ap] -60 dBm [rssi at su] -33 dBm Trango Broadband Wireless — User Manual M915S Rev C Page...
  • Page 40 For thorough results, it is recommended that you run the command repeatedly for at least 1 minute or more to determine if packets are passing without error consistently over time. Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 41: Arq With Selected Repeat And Multirate Feature

    ARQ with Selected Repeat and Multirate Feature The M915S features ARQ or “Automatic Request for Re-transmission,” which provides the ability to correct for missing or corrupted packets of data by asking the sender to re-transmit the data. Both the AP and SU units implement a form of ARQ known as “ARQ with Selected Repeat.”...

  • Page 42: Section 8 Management

    Radio Management Access Via TCP/IP The IP Address of an M915S radio is for management purposes only. The IP address is not used for purposes of routing or passing traffic. Users should take care to set appropriate IP schemes for all management activities including upgrading the radio’s firmware.

  • Page 43: Loading Multiple Sus Into The Sudb Using Dload Command

    Run command save sudb to write the SUDB to non-volatile memory. SNMP The M915S supports Simple Network Management Protocol (SNMP) for network management. Network management consists of the following 4 categories: configuration, accounting, alarm, and monitoring and control. These capabilities allow the network operator to provide superior services through higher network availability and integrated accounting systems.

  • Page 44: Objects For Monitoring And Control

    Users interested in using the SNMP functionality should review the entire M915S MIB for a complete understanding of its features. The M915S MIB is available for download at: http://www.trangobroadband.com/support/downloads.htm The following is an overview of a few of the more commonly used SNMP objects in the M915S system. Objects for Monitoring and Control SU Bandwidth Monitoring •...

  • Page 45: Snmp Setup

    (Trango MIB object trapconfig–aptrpTable-AptrpEntry) • enable each trap (Trango MIB object traponfig–aptrpTable-AptrpEntry) For all the set operations, set object SaveAndActivate at apsystem-apsystemInfo to write the information to FLASH. Trango Broadband Wireless — User Manual M915S Rev C Page...

  • Page 46: Appendix A Command Set Reference

    = max. power value power set <min|max|<dBm> AP/SU Specify TX power for both band Note: SU’s power will be adjusted by AP during association process (power leveling) Trango Broadband Wireless — User Manual M915S Rev. A Page 42...
  • Page 47 15. Auto scan AP on/off 16. TCP/IP for AP on/off 17. HTTPD on/off 18. TCP/IP service for Ethernet port on/off 19. Default channel and antenna 20. Active channel and antenna 21. TX power Trango Broadband Wireless — User Manual M915S Rev. A Page 43...
  • Page 48 Display SU Target RSSI in dBm. This setting is used in the SU ro/rw power leveling process. targetrssi <dBm, -90..-50> Change target RSSI. Note: Target RSSI must be +5 dB more than rfrxth (RFRX Threshold). Trango Broadband Wireless — User Manual M915S Rev. A Page 44...
  • Page 49 Save SUDB into flash memory AP/SU Display firmware and date codes ro/rw Version number and date code Firmware and FPGA version code Firmware and FPGA image checksum Trango Broadband Wireless — User Manual M915S Rev. A Page 45...

  • Page 50: Appendix B Specifications

    Appendix B Specifications All specifications apply to the M915S-AP and M915S-SU, unless otherwise noted. Radio Transmit Specifications Storable Channels: 4 memory locations Agility: 906 to 924 MHz in 1 MHz increments Default channels: Channel 1: 906 MHz Channel 2: 912 MHz...
  • Page 51 24 VDC +/- 1 V Max current: 1000 mA Connector: 5mm DC Barrel-type Plug Standard External Power-over-Ethernet Junction Box Type: In-line female-to-female RJ-45 adapter for CAT-5 Ethernet cable Connectors: Trango Broadband Wireless — User Manual M915S Rev. A Page 47...
  • Page 52 +9 dBiL +/- 1 dB Az Beamwidth: 60º (3 dB pts) El Beamwidth: 60º (3 dB pts) Cross Pol: >15 dB Front/Back Ratio: 15 dB VSWR: < 2.0:1 over Bandwidth Trango Broadband Wireless — User Manual M915S Rev. A Page 48...

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