Trango Broadband Wireless M915S Bedienungsanleitung

M915S™

900 MHz Wireless Broadband System

USER MANUAL

December 15, 2005

Revision A

for Firmware Version 2.0

Table of Contents Trango

Trango Broadband Wireless — M900S User Manual Rev. C page ii

Table of Contents

Preface ........................................................................................................................................................................... iv

FCC Information ....................................................................................................................................................... iv

Warranty Information ................................................................................................................................................ iv

Firmware Notifications.............................................................................................................................................. iv

Section 1 Introduction..................................................................................................................................................... 1

Overview .................................................................................................................................................................... 1

SmartPolling™ & Bandwidth Throttling.................................................................................................................... 2

Auto-retransmit Feature (ARQ).................................................................................................................................. 2

Section 2 Hardware Overview ........................................................................................................................................ 3

M915S AP and SU Hardware Components................................................................................................................ 3

Section 3 Getting Started ................................................................................................................................................ 4

Connections and Power .............................................................................................................................................. 4

Radio Management Concepts ..................................................................................................................................... 5

Browser Interface ....................................................................................................................................................... 6

Command Line Interface ............................................................................................................................................ 8

Telnet...................................................................................................................................................................... 8

Troubleshooting...................................................................................................................................................... 9

Section 4 Basic Configuration via Browser Interface................................................................................................... 10

Configuring the AP’s Subscriber Unit Database (SUDB) ........................................................................................ 10

Configure Other Basic AP Parameters ..................................................................................................................... 12

Configure Basic SU Parameters ............................................................................................................................... 14

LED Summary.......................................................................................................................................................... 15

RF Link Loopback Test............................................................................................................................................ 16

SU Ranging Test....................................................................................................................................................... 17

Advanced Setup Page ............................................................................................................................................... 17

Other Key Parameters............................................................................................................................................... 18

Site Survey Page....................................................................................................................................................... 19

Section 5 Basic Configuration via CLI ......................................................................................................................... 20

Access Point Basic Settings...................................................................................................................................... 20

Subscriber Unit Database (SUDB) Settings ............................................................................................................. 23

Subscriber Unit Basic Settings ................................................................................................................................. 24

Section 6 Mounting Hardware...................................................................................................................................... 27

Cabling and Grounding Considerations.................................................................................................................... 29

Section 7 Deployment................................................................................................................................................... 31

Site Selection ............................................................................................................................................................ 31

Site Survey ............................................................................................................................................................... 31

AP Search and SU Antenna Alignment .................................................................................................................... 32

Link Management Commands.................................................................................................................................. 34

ARQ with Selected Repeat and Multirate Feature.................................................................................................... 37

Section 8 Management.................................................................................................................................................. 38

Radio Management Access Via TCP/IP................................................................................................................... 38

SU Management from AP ........................................................................................................................................ 38

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

Table of Figures Trango

Trango Broadband Wireless — M900S User Manual Rev. C page iii

Table of Figures

Figure 1: Typical Deployment ....................................................................................................................................... 1

Figure 2: Basic Components of an M915S Radio.......................................................................................................... 3

Figure 3: Bottom of Radio ............................................................................................................................................. 3

Figure 4: Back of Radio................................................................................................................................................. 4

Figure 5: Side of Radio & Location of Reverse Polarity SMA Connector .................................................................... 4

Figure 6: Wiring Diagram.............................................................................................................................................. 5

Figure 7: LED Summary.............................................................................................................................................. 15

Figure 8: LED and Reset Button Window ................................................................................................................... 15

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

Preface

Trango Broadband Wireless — M900S User Manual Rev. C page iv

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. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15

of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and radiates radio-frequency energy; if not installed and

used in accordance with these instructions, the unit may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in any particular installation. If this equipment does

cause harmful interference to radio or television reception, which can be determined by turning the equipment off

and on, the user is encouraged to correct the interference by one of more of the following measures:

1) Reorient the antenna.

2) Increase the separation between the affected equipment and the unit.

3) Connect the affected equipment to a power outlet on a different circuit from that which the receiver is

connected to.

4) Consult the dealer and/or experienced radio/TV technician for help.

FCC ID: NCYM915S

Canada: 2945A-M915S

IMPORTANT NOTE: Intentional or unintentional changes or modifications must not be made unless under the

express consent of the party responsible for compliance. Any such modifications could void the user’s authority to

operate the equipment and will void the manufacturer’s warranty. To comply with FCC RF exposure requirements,

the following antenna installation and device operating configurations must be satisfied. The antenna for this unit

must be fixed and mounted on an outdoor permanent structure with a separation distance of at least two meters

from all persons. Furthermore, it must not be co-located or operated in conjunction with any other antenna or

transmitter.

Warranty Information

Radios from Trango Broadband Wireless are warranted from one year from date of purchase. Please see

www.trangobroadband.com for a complete description of warranty coverage and limitations.

Firmware Notifications

To receive email notifications regarding firmware upgrades and product announcements, register at

http://www.trangobroadband.com/mailinglist/mailingListAdd.aspx

Introduction

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 1

Section 1 Introduction

Your Trango Broadband M915S radio system provides a reliable and robust means to deliver broadband access to a

wide geographic region through wireless Ethernet connectivity. This section will familiarize you with basic

operational concepts, as well as an overview of the various components and hardware of the M915S system.

Overview

The M915S is a highly versatile and cost effective outdoor point-to-multipoint solution for wireless broadband

service providers’ enterprise connectivity applications. The M915S delivers 3 Mbps over the air, and operates in the

900 MHz license free ISM band. Each radio includes an integrated dual polarized (horizontal and vertical) antenna,

as well as a connector for the attachment of an external antenna, such as a Yagi or an omni style antenna. Note: If

you are going to install an external antenna, refer to the M915S Professional Installation Guide. Contact

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™. The M915S radio units are backward compatible with M900S radios

such that an M915S-AP may be used with M900S-SUs and M915S-SUs may be used with M900S-APs. The main

difference in the design is a better front/back ratio on the internal patch antenna to improve co-location at tower

sites, a redesigned digital section on the printed circuit board, and a new package for the M915S-SU. Network

operators can co-locate multiple APs at a single cell site, thus increasing the aggregate throughput available at each

wireless point of presence (POP).

Figure 1: Typical Deployment

The AP typically resides at the center of the point-to-multipoint (PMP) network. It performs all management

functions, including the allocation of bandwidth for all associated SUs. The M915S AP provides a host of

comprehensive tools and functions.

The M915S system is classified as a Layer 2 multi-point bridge, thus all forms of Ethernet traffic will pass

seamlessly over the system. There is no limitation on the number of IP addresses or hardware devices to which an

individual subscriber unit may be connected.

Authentication of Subscriber Units is performed using a secure proprietary method, which is based on the MAC

address of the subscriber units. In order to establish a wireless link, the MAC address of the SU must be present in

the Access Point’s SUDB.

Both APs and SUs are IP addressable and can be managed remotely across the network. Users can manage the

radios using the telnet command line interface or the graphical HTTP browser interface. The M915S also provides

remote firmware upgrade capability utilizing TFTP. APs include a full-featured SNMP agent for the monitoring

and controlling of both APs and SUs via SNMP.

Introduction

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 2

The M915S radios are powered using "power-over-Ethernet" for ease and low-cost installation. A single Cat-5

cable caries both Ethernet and DC power to the radio.

Both APs and SUs feature a handy "site survey" tool to check for interference, as well as RSSI tools for optimizing

antenna positioning. The M915S also features variable receiver threshold, full power control, dual polarized

antennas, and various link diagnostic tools.

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. The

AP polls each SU in a round robin format to determine if the SU has data to transfer. The SU only

transmits the data “upstream” to the AP when the AP gives authorization via a “transmit grant.” The SU

passes every “downstream” data packet from the AP and identifies packets intended for it. In order for an

SU to communicate with an AP, the system administrator must first add the MAC address and ID number

of the SU to the SUDB in the AP. The SmartPolling algorithm will poll active SUs more often, thus

making the most efficient use of the 3 Mbps bandwidth. Several other parameters are considered in the

SmartPolling algorithm including upstream/downstream committed information rate (CIR),

upstream/downstream maximum information rate (MIR), and Priority Setting.

Each of the above parameters is set in the AP by the system administrator and cannot be controlled at the

SU. These parameters will be covered in greater detail later in this text.

When power is first applied to a properly installed SU, it will scan all available channels listening for a

grant from an AP that has a matching Base ID and the SU’s MAC in the its SUDB. The SU will then stop

on that channel and respond to the AP using maximum RF power. Before the AP can add the SU to the

polling list, it must authenticate the SU by verifying the MAC address and performing a ranging operation

to the SU. Upon successfully locating and ranging the SU, the AP will then add the SU to the normal

polling list. Once the AP is regularly polling the SU, the SU is said to be “associated” to the AP.

Once associated, the AP will send a command to the SU to adjust the SU’s RF transmit power based on the Target

RSSI parameter set in the AP. This process is referred to as “power leveling”.

System operators may limit allowable bandwidth to specific customers utilizing the built-in CIR and MIR settings

(measured in kbps) for each SU.

Auto-retransmit Feature (ARQ)

The M915S features ARQ or “Automatic Request for Re-transmission,” which is the ability to correct for missing

or corrupted packets of data by requesting the sending radio to re-transmit the data. Both the AP and SU units

implement a form of ARQ known as “ARQ with Selected Repeat.” The use of ARQ is especially important in

areas of high interference. The ARQ feature can be turned on or off.

Hardware Overview

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 3

Section 2 Hardware Overview

This section provides details about each radio in the M915S family. The M915S-SU and M915S-AP include built-

in, electronically switchable, dual-polarized antennas, as well as a reverse polarity SMA connector for the

attachment of an external antenna. Both units are designed for outdoor installation, and are powered by power-

over-Ethernet (POE) for ease of installation. The M915S Access Point, as well as the M915S subscriber units,

provide channels of operation within the 900 MHz ISM band that spans from 902 MHz to 928 MHz. The channel

width is 6 MHz, and the default channel assignments allow for 4 non-overlapping channels.

M915S AP and SU Hardware Components

Each radio comes equipped with a power-over-Ethernet (PoE) J-Box, an AC adapter, and mounting hardware.

Radio (MU or RU) antenna

Power Supply (120 VAC-24 VDC)

J-Box (Power-over-Ethernet Injector)

Mounting Hardware

Figure 2: Basic Components of an M915S Radio

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.

Getting Started

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 4

Figure 4: Back of Radio

The radio’s model number, FCC ID, MAC ID, and Serial number, are located on the backside of the radio.

6.300

.600

Figure 5: Side of Radio & Location of Reverse Polarity SMA Connector

Section 3 Getting Started

This section explains how to power your radios, establish TCP/IP connectivity to the radios, as well as how to

access the HTTP browser and the command line interfaces.

Connections and Power

Connections and powering of the radios is the same for APs and SUs.

• 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

MODEL: M915S-AP Rev. A

ACCESS900 (TM)

S/N: 00000XXXX

MAC: 00 01 DE 00 02 F3

FCC ID: NCYM915S

CANADA: 2945A-M915S

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES: OPERATION IS

SUBJECT TO THE FOLLOWING CONDITIONS: 1) THIS DEVICE MAY NOT CAUSE

HARMFUL INTERFERENCE, AND 2) THIS DEVICE MUST ACCEPT ANY

INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION

Getting Started

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 5

• If connecting to a COMPUTER, use a Cross-Over Ethernet cable from the NET port of the J-box to the

computer’s Ethernet port.

If connecting to a HUB, SWITCH, or ROUTER, use a Straight-Thru cable.

• Plug the AC adapter into an AC outlet.

CAT-5

STRAIGHT-THRU CABLE

24 VOLT POWER

SUPPLY

AC POWER

M900S (AP o

SU)

POWER-OVER-ETHERNET

J-BOX

INDICATES POWER TO RADIO

INDICATES POWER TO J-BOX

NETWORK

COMPUTER

USE STRAIGHT-THRU CABLE

USE CROSS-OVER CABLE IF TO COMPUTER

IF TO HUB, SWITCH, OR ROUTER

CAT-5

Figure 6: Wiring Diagram

Both green LEDs on the J-box should be lit, indicating power is present at the J-box as well as the radio.

You are now ready to configure the radio via the Ethernet port.

Radio Management Concepts

Proper connections to the radios and careful IP/routing & planning will enable the network administrator to access

and manage the radios via TCP/IP remotely over the network. Radio management over TCP/IP can be performed

from computers connected to the Ethernet side of each radio. Computers connected to the AP can manage the SU

over the wireless connection. Computers connected to the SU can manage the AP, provided that switch 7 (TCP/IP

for 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. Alternatively, when in Opmode “ON,” the radio is

transmitting and is attempting to associate.

Getting Started

Trango Broadband Wireless — User Manual M915S Rev. 1 Page 6

Several functions, such as the site survey function and the SU RSSI function, can only be performed while the radio

is in a particular Opmode. See Appendix A – Command Set Reference for a complete listing of commands, and the

appropriate Opmode(s) for each command.

Switch Settings

M915S firmware includes several “switches” that are used to set certain operational parameters of the radios.

Switch settings can be changed via the HTTP browser interface or the command line interface. For purposes of

radio TCP/IP management, the following four switches are important:

Switch 2 (SU) - TCP/IP access to SU from the AP’s side of the network requires that the SU’s switch 2 (SW 2 –

TCP/IP for AP) be ON. Default setting for SW 2 (from factory) is ON.

Switch 5 (AP and SU) – In order to utilize the radio’s HTTP Browser interface, switch 5 (SW 5 – Enable HTTP)

must be ON. Default setting for SW 5 (from factory) is ON.

Switch 6 (SU) - TCP/IP access from Ethernet port of SU requires that switch 6 (SW 6 – TCP/IP Service for

Ethernet Port ) be ON. Default setting for SW 6 (from factory) is ON. If SW 6 is OFF, TCP/IP access to SU

from it’s Ethernet port is possible only if the SU’s Opmode is “OFF.”

Switch 7 (AP) – TCP/IP access to AP from SU’s side of network requires that the AP’s switch 7 (SW 7 –

TCP/IP for SU) be ON. Default setting for SW 7 (from factory) is ON.

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). Be sure to change both passwords (RW and RO) prior to deployment on a live network.

Passwords can be changed using the “password ro and password rw command in either the CLI interface or in the

command console of the browser interface.

Reset Button

Pressing the reset button will reset the radio’s IP address and password back to the factory defaults.

Default IP (192.168.100.100) Default Password (trango)

Browser Interface

The M915S (both AP and SU) features a convenient and easy-to-use web based configuration and management

tool. No additional software is needed on your computer other than a web browser. Most functions can be

performed using the browser interface, although several functions can only be performed via command line

interface (CLI). The browser interface also includes a Command Console page that allows the user to enter most

CLI commands without leaving the browser interface.

To use the browser interface, the following must be present:

• An Ethernet connection between a PC and the radio

• Ethernet PC connection with IP/subnet that is routable to the radio

• SW 5 ON (default)

• A web browser on the PC (i.e. Microsoft Internet Explorer)

In order to use the browser interface – simply connect the radio to a PC and type the radio’s IP address (default IP

address=192.168.100.100) into the web browser (i.e. Microsoft Internet Explorer). This will bring up the Login

page.

NOTE: Login pages for the AP and SU are similar.

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