All rights reserved July 13, 2007. The information in this document is proprietary
to Redline Communications Inc. This document may not in whole or in part be
copied, reproduced, or reduced to any medium without prior consent, in writing,
from Redline Communications Incorporated.
Contact Information:
Redline Communications Inc.
302 Town Centre Blvd. Suite 100
Markham, ON
Canada L3R 0E8
Web Site: http://www.redlinecommunications.com
Sales Inquiries:
North American: nainfo@redlinecommunications.com
Toll-free sales: 1-866-633-6669
International: intlinfo@redlinecommunications.com
The statements, configurations, technical data, and recommendations in this document
are believed to be accurate and reliable, but are presented without express or implied
warranty. Additionally, Redline makes no representations or warranties, either expressed
or implied, regarding the contents of this product. Redline Communications shall not be
liable for any misuse regarding this product. The information in this document is subject
to change without notice.
1. Read this User Manual and follow all operating and safety instructions.
2. Installation of the antenna and modem must be contracted to a professional installer.
3. This product is supplied with a grounding power plug. Do not defeat this important
safety feature.
4. The power requirements are indicated on the product-marking label. Do not exceed
the described limits and do not overload wall outlets.
5. Position the power cord to avoid possible damage.
6. DC power supply connection warning:
DC Power Supply Connections: Warning to Service Personnel
Caution for all
AC and DC models:
Caution for all
DC models:
7. IF cable connection caution:
IF Cable Connection: Caution to Service Personnel
Connecting or disconnecting the IF cable connector when the base station is
powered-on may damage the base station equipment.
The base station provides DC power to the outdoor modem unit through the IF
cable. Installers must ensure that the base station indoor unit is completely
powered off before connecting or disconnecting the IF cable at the modem or
indoor unit. Technical service personnel must employ the same cautions when
bench-testing equipment prior to field deployment.
8. Do not place this product on or near a direct heat source, and avoid placing objects
on the terminal.
9. Do not operate this device near water or in a wet location.
10. Use only a damp cloth for cleaning. Do not use liquid or aerosol cleaners.
Disconnect the power before cleaning.
11. Protect the unit by disconnecting the power if it is not used for long periods.
12. Locate terminal on a stable horizontal surface or securely mounted in a 19-inch rack.
13. The radio modem units must not be located near power lines or other electrical
power circuits.
14. The system must be properly grounded to protect against power surges and
accumulated static electricity. It is the user’s responsibility to install this device in
accordance with the local electrical codes: correct installation procedures for
grounding of the modem unit, mast, lead-in wire and discharge unit, location of
discharge unit, size of grounding conductors and connection requirements for
grounding electrodes.
15. The DC input source must be an isolated secondary DC SELV supply (60V DC
max).
16. This equipments must be installed in compliance with relevant articles in National
Electric Code-NEC (and equivalent Canadian Electrical Code CEC) including
chapter 8.
17. Keep all product information for future reference.
1.2 Important Warning Symbols
The following symbols may be encountered during installation or troubleshooting. These
warning symbols mean danger. Bodily injury may result if you are not aware of the safety
hazards involved in working with electrical equipment and radio transmitters. Familiarize
yourself with standard safety practices before continuing.
Electro-Magnetic Radiation High Voltage
1.3 Frequency Selection
1.3.1 General
Operation in the FWA band is subject to license. The radio power and channel frequency
selections must be set correctly before the installed system is allowed to transmit. The
installed system must comply with all governing local, regional, and national regulations.
Contact authorities in the country of installation for complete information regarding the
licensing regime and operating restrictions for that regulatory domain.
1. The Model AN-100U and its antenna must be professionally installed.
2. WARNING -- FCC RF Exposure Warnings
To satisfy FCC RF exposure requirements for RF transmitting devices, a minimum
distance of 20 cm should be maintained between the antenna of this device and
persons during device operation. To ensure compliance, operation at closer than this
distance is not recommended. The antenna used for this transmitter must not be
collocated in conjunction with any other antenna or transmitter.
3. Operation is restricted to the 25 MHz band 3.650-3.675 GHz (restricted contention
based protocol for WiMAX devices).
4. FCC Information to Users @ FCC 15.21 & 15.105:
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
5. Warning: Changes or modifications not expressly approved by Redline
Communications could void the user’s authority to operate the equipment.
6. Refer to section 8.5: FCC Certified Antennas on page 108 for a list of certified
antennas.
1.4.1 R&TTE Directive 1999/5/EC Statements
Installation
The modem and antenna equipment must be installed by a qualified professional installer
and must be installed in compliance with regional, national, and local regulations. It is the
responsibility of the system installer and/or system operator to ensure the installed system
does not exceed any operational constraints identified by local regulations. Refer to the
product User Guide and Installation Guidelines document for detailed information covering
the correct steps to ensure power and frequency settings are set correctly before connecting the
antenna. Operation in the 3.4-3.6 GHz band is subject to license. Authorities within the
country of installation can provide information regarding the licensing regime and restrictions.
Community Language Declarations
The following table contains community language versions of informal statement in
accordance with Article 6.3 of Directive 1999/5/EC.
Table 1: Notices - R&TTE Community Language CE Declarations
Danish Undertegnede Redline Communications erklærer herved, at følgende udstyr
RedMAX Base Station (model base station) overholder de væsentlige krav og
øvrige relevante krav i direktiv 1999/5/EF.
Dutch
English Hereby, Redline Communications, declares that this RedMAX Base Station
Finnish Redline Communications vakuuttaa täten että RedMAX Base Station (model
French
German
Greek
Italian Con la presente Redline Communications dichiara che questo RedMAX Base
Portuguese Redline Communications declara que este RedMAX Base Station (model base
Spanish Por medio de la presente Redline Communications declara que el RedMAX
Swedish Härmed intygar Redline Communications att denna RedMAX Base Station
Hierbij verklaart Redline Communications dat het toestel RedMAX Base Station
(model base station) in overeenstemming is met de essentiële eisen en de
andere relevante bepalingen van richtlijn 1999/5/EG.
Bij deze verklaart Redline Communications dat deze RedMAX Base Station
(model base station) voldoet aan de essentiële eisen en aan de overige
relevante bepalingen van Richtlijn 1999/5/EC.
(model base station) is in compliance with the essential requirements and other
relevant provisions of Directive 1999/5/EC.
base station) tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja
sitä koskevien direktiivin muiden ehtojen mukainen.
Par la présente Redline Communications déclare que l'appareil RedMAX Base
Station (model base station) est conforme aux exigences essentielles et aux
autres dispositions pertinentes de la directive 1999/5/CE.
Par la présente, Redline Communications déclare que ce RedMAX Base Station
(model base station) est conforme aux exigences essentielles et aux autres
dispositions de la directive 1999/5/CE qui lui sont applicables.
Hiermit erklärt Redline Communications, dass sich dieser/diese/dieses RedMAX
Base Station (model base station) in Übereinstimmung mit den grundlegenden
Anforderungen und den anderen relevanten Vorschriften der Richtlinie
1999/5/EG befindet". (BMWi)
Hiermit erklärt Redline Communications die Übereinstimmung des Gerätes
RedMAX Base Station (model base station) mit den grundlegenden
Anforderungen und den anderen relevanten Festlegungen der Richtlinie
1999/5/EG. (Wien)
ΜΕΤΗΝΠΑΡΟΥΣΑ Redline Communications ∆ΗΛΩΝΕΙΟΤΙ RedMAX Base
Station (model base station) ΣΥΜΜΟΡΦΩΝΕΤΑΙΠΡΟΣΤΙΣΟΥΣΙΩ∆ΕΙΣΑΠΑΙΤΗΣΕΙΣΚΑΙΤΙΣΛΟΙΠΕΣΣΧΕΤΙΚΕΣ∆ΙΑΤΑΞΕΙΣΤΗΣΟ∆ΗΓΙΑΣ
1999/5/ΕΚ.
Station (model base station) è conforme ai requisiti essenziali ed alle altre
disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
station) está conforme com os requisitos essenciais e outras provisões da
Directiva 1999/5/CE.
Base Station (model base station) cumple con los requisitos esenciales y
cualesquiera otras disposiciones aplicables o exigibles de la Directiva
1999/5/CE.
(model base station) står I överensstämmelse med de väsentliga egenskapskrav
och övriga relevanta bestämmelser som framgår av direktiv 1999/5/EG.
Table 2: Notices - R&TTE: Countries of Use (3.4 GHz & 3.6 GHz)
Country 3400-3600 MHz Country 3400-3600 MHz Country 3400-3600 MHz
Austria
Belgium
Bulgaria
Cyprus Italy Slovakia
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
9
9
9
9
9
9
9
9
9
9
Hungary
Iceland
Ireland
Latvia
Liechtenstein
Lithuania
Luxembourg
Malta
Netherlands
Norway
R&TTE Directive 1999/5/EC - Declarations of conformity are available at the following
web site address:
9
9
9
9
9
9
9
9
9
9
Poland
Portugal
Romania
Slovenia
Spain
Sweden
Switzerland
United Kingdom
9
9
9
9
9
9
9
9
9
http://www.redlinecommunications.com/conformance/
1.5 Important Service Information
1. Refer all repairs to qualified service personnel. Removing the covers or modifying
any part of this device, as this voids the warranty.
2. Disconnect the power to this product and return it for service if the following
conditions apply:
- The unit does not function after following the operating instructions outlined in
this manual.
- Liquid has been spilled, a foreign object is inside, or the indoor terminal has been
exposed to rain.
- The product has been dropped or the housing is damaged.
3. Locate and record the serial number of the terminal, antenna, and modem for future
reference. Record the MAC address of the indoor terminal.
4. Redline does not endorse or support the use of outdoor cable assemblies: i) not
supplied by Redline, ii) third-party products that do not meet Redline's cable and
connector assembly specifications, or iii) cables not installed and weatherproofed as
specified in this manual. Refer to the Redline Limited Standard Warranty and
RedCare service agreements.
WARNING: To satisfy IC RF exposure requirements for RF transmitting devices,
where an externally mounted antenna is employed in point-to-multipoint applications,
each antenna must be separated from all persons by a distance of at least 65 centimeters.
To ensure compliance, operations at closer than this distance is not recommended. The
antenna used for this transmitter must not be collocated in conjunction with any other
antenna or transmitter.
Usage of this base station is subject to license within Canada. Operation is restricted to
the 200 MHz band from 3.450-3.650 GHz. More information regarding licensing
requirements is available from Industry Canada
This device has been designed to operate with the antennas listed below, and having a
maximum gain of 17.5 dBi. Antennas having a gain greater than 17.5 dBi are strictly
prohibited for use with this device. The required antenna impedance is 50 ohms.
In accordance with the WEEE (Waste from Electrical and Electronic Equipment)
directive, 2002/96/EC, Redline Communications equipment is marked with the logo
shown above. The WEEE directive seeks to increase recycling and re-use of electrical
and electronic equipment. This symbol indicates that this product should not
of as part of the local municipal waste program. Contact your local sales representative
for additional information.
Congratulations on your purchase of the Redline Communications model Access Node100U wireless broadband base station single sector base station. Redline
Communications is a world leader in design and production of Broadband Fixed Wireless
(BFW) systems.
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Baassee SSttaattiioonn
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2.1 Introduction
The RedMAX base station is a carrier class IEEE 802.16-2004 compliant wireless device
for deployment of point-to-multipoint (PMP) and point-to-point (PTP) systems.
Figure 2: Intro - Base Station Terminal, Transceiver, and Antenna
The base station consists of an indoor terminal (IDU) and outdoor modem and antenna
(ODU). Each operational RedMAX wireless broadband network segment is comprised of
a RedMAX base station and one or more WiMAX Forum Certified subscribers. Each
subscriber registers and establishes a bi-directional data link with the base station sector
controller.
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The RedMAX base station is (part of) the 802.16 definition of a base station. A RedMAX
base station functions as a central hub or concentrator, connected to a WAN network
access point, and managing wireless links for remote subscribers. The RedMAX base
station enforces the Quality of Service (QoS) settings by controlling all uplink and
downlink traffic scheduling -- providing non-contention based traffic with predictable
transmission characteristics.
2.2 IEEE 802.16 / WiMAX Compliance
The IEEE 802.16-2004 specifications describe a PMP broadband wireless access
standard for systems operating in the frequency range of 2-11 GHz, and 10-66 GHz. This
standard includes descriptions for both the Media Access Control (MAC) and the
physical (PHY) layers.
The RedMAX base station is compliant to the following IEEE 802.16-2004
WirelessMAN-OFDM and WirelessHUMAN-OFDM Physical Layer Profiles:
Note that the 802.16 standards are subject to amendment, and RedMAX product design
compliance applies to a specific revision of the standard. The RedMAX product does not
support mesh communication (direct subscriber-to-subscriber).
Redline is an active member of the IEEE 802.16 standards committee and has been
instrumental in creating the original 802.16 standards. Redline is also active in
recommending, writing and following-up on new amendments to the 802.16
specifications.
Redline is an active member of the WiMAX Forum™ and is participating in
interoperability testing in the WiMAX Forum.
2.3 PHY Specification
The base station is designed for 2-11 GHz operation based on the WirelessMAN-OFDM
PHY definition in the IEEE 802.16 specification. Refer to the system specifications for
supported frequency ranges.
2.4 OFDM (256 FFT)
The base station uses Orthogonal Frequency Division Multiplexing (OFDM). OFDM is a
multi-carrier transmission technique where the data stream is split and transmitted (at a
reduced rate) in parallel streams on separate sub-carriers. OFDM uses the Fast Fourier
Transform (FFT) algorithm to implement modulation and demodulation functions. Using
adequate channel coding and bit-interleaving, OFDM can perform very well in severe
multipath environments, mitigate frequency selective fading and provide high spectral
efficiency.
2.5 Features
2.5.1 Privacy
The base station is hardware ready to provide encryption for user traffic. The MAC
header of 802.16 contains the information Encryption Control (EC), Encryption Key
sequence (EKS) , and Connection Identifier (CID) necessary to decrypt a payload by the
receiver. Protection of the payload is indicated by the EC bit field. A value of '1' indicates
the payload is cryptographically protected and the EKS field contains meaningful data. A
value of '0' indicates the payload is not cryptographically protected. The EKS field
contains a sequence number used to identify the current generation of keying material.
2.5.2 Time Division Duplexing (TDD)
The base station system uses time division duplexing (TDD) to transmit and receive on
the same RF channel, or using separate RF channels using half-duplex FDD (HD-FDD).
These are both non-contention based methods for providing an efficient and predictable
two-way PTP or PMP cell deployment. All uplink and downlink transmission scheduling
is managed by the base station. The base station sends data traffic to subscribers, polls for
grant requests, and sends grant acknowledgements based on the total of all traffic to all
subscribers.
Each burst of data transmitted over the wireless interface is padded with redundant
information, making it more resistant to potential over-the-air errors. The coding rate is
the ratio of user data to the total data transmitted including the redundant error correction
data. The base station supports coding rates of 1/2, 2/3, and 3/4.
2.5.4 Modulation
The modulation technique specifies how the data is coded within the OFDM carriers. The
base station supports BPSK, QPSK, 16 Quadarature Amplitude Modulation (QAM), and
64 QAM modulation.
2.5.5 Reed Solomon Error Correction
Outer Reed-Solomon and inward Convolution Coding (RS-CC) error correction is
enabled for all traffic rates, with the exception of BPSK 1/2 where only inward
Convolution Coding is used. These low-level processes can correct bursts of errors in
received messages and reduce the number of retransmissions.
2.5.6 Time Synchronization
When operating two or more collocated base stations, transmitter operations MUST be
synchronization to minimize inter-sector interference. Each base station has a
synchronization port located on the front panel to receive synchronization pulses.
2.6 Deployment Models
The base station supports point to point (PTP) and point to multipoint (PMP) deployment
scenarios.
When deployed in a PTP configuration the base station establishes a dedicated bidirectional link to a single subscriber. The PTP deployments typically use a directional
narrow beam antenna for both ends of the link.
2.6.2 PMP Deployment
When deployed in a PMP configuration the base station establishes bi-directional links to
more than one subscriber. PMP deployments typically use a wide beam (sector) antenna
at the base station and a narrow beam antenna at the subscriber. Service flows are used to
police service level agreements for each subscriber.
2.6.3 Non Line-of-Sight
The RedMAX system supports line-of-sight (LOS), optical line-of-sight (OLOS), and
non line-of-sight (NLOS) operation. A clear LOS link has no obstacles within 60% of the
first Fresnel zone of the direct path. An OLOS link has obstructions within 60% of the
first Fresnel zone, but a visible path exists between the base station and subscriber. Refer
to the following illustration.
Figure 4: System - Fresnel Zone
A wireless link is considered non LOS if natural or man-made structures block the visible
path between the base station and the subscriber. In this case, a wireless link can be
established only if a reflective path can be established between the base station and
subscriber.
The base station is a frequency-specific system, with the frequency band defined by the
modem unit. The use of the operating band must be in accordance with European
Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
The base station divides the available frequency band into channels. Allocation of
channels during deployment is dependent on spectrum availability in the licensed FWA
band and local licensing requirements and conditions. Channel selection allows planners
to obtain the maximum geographic coverage, while avoiding frequency contention in
adjacent sectors.
2.7 Service Flows
Service flows are a key feature of the 802.16 standard.
A service flow represents a unidirectional data flow. Transmitting bidirectional traffic
requires that two service flows be defined: one for the uplink, and another for the
downlink. These service flows can have different QoS settings.
The base station allows multiple service flows to be configured for each subscriber in a
sector. This allows service providers to offer different services, and segregate traffic
flows having different QoS requirements.
A service flow is partially characterized by the following attributes:
1. A 32-bit Service Flow ID (SFID) is assigned to all existing service flows. The SFID
serves as the principal identifier for the Service Flow and has an associated direction.
2. A 16-bit Connection ID (CID) is associated with each active SFID (connection
3. A set of QoS parameters specifying the required resources. The principal resource is
bandwidth, but the specification may also include latency requirements.
4. A set of QoS parameters defining the level of service being provided.
2.7.1 Service Flow Classification
Data packets are forwarded based on classification rules. Classification rules require
examining each packet for pattern matches such as destination address, source address, or
VLAN tag. All classification is defined at the base station and the classification
parameters are downloaded to the subscriber.
2.7.2 Dynamic Service Addition
Service flows are defined and stored in the base station. For each service flow to be
established, the base station sends a setup message to the subscriber specifying the
required set of QoS parameters. The subscriber responds to each request by accepting or
rejecting the setup message.
A service flow may be pre-provisioned or can be dynamically created and deleted
without service outage. This is useful for supporting multiple subscribers in a single
sector. New subscribers can be added and existing subscribers can be removed or have
service levels modified.
Setup messages are sent by the base station following any subscriber power-cycle, loss
and recovery of the wireless link to a subscriber, or any service flow add/delete operation
at the base station.
2.7.3 Default Service Flows
Default UL/DL service flows are created automatically for each registered subscriber.
These service flows are used to pass all traffic not matching any user-defined service
flow (such as broadcast ARP) between the base station and subscribers. The default
service flow capacity is limited for each subscriber.
2.7.4 Scheduling
The base station enforces QoS settings for each service flow by controlling all uplink and
downlink traffic scheduling. This provides non-contention based traffic model with
predictable transmission characteristics. By analyzing the total of requests of all
subscribers, the base station ensures that uplink and downlink traffic conforms with the
current service level agreements (SLAs). Centralized scheduling increases predictability
of traffic, eliminates contention, and provides the maximum opportunity for reducing
overhead.
A regular period is scheduled for subscribers to register with the base station. These
subscribers may be newly commissioned or have been deregistered due to service outage
or interference on the wireless interface. This is the only opportunity for multiple
subscribers to transmit simultaneously.
Real-Time Polling Service (rt-PS)
The base station schedules a continuous regular series of transmit opportunities for the
subscriber to send variable size data packets. The grant size is based on the current data
transfer requirement. Typical applications include streaming MPEG video or VOIP with
silence suppression. This is efficient for applications that have a real-time component and
continuously changing bandwidth requirements.
Non-Real-Time Polling Service (nrt-PS)
The base station schedules regular transmit opportunities for the subscriber to send
variable size data packets. Typical applications may include high bandwidth FTP. The
polling period may typically be one second or less, even during periods of network
congestion.
Best Effort (BE)
The base station schedules transmit opportunities for the subscriber to send traffic based
on unused bandwidth after all higher level traffic scheduling requirements are serviced.
Typical applications may include Internet access and email. Best effort service flows can
be assigned a priority of 0 to 7.
Unsolicited Grant Service (UGS)
The base station schedules a continuous series of transmit opportunities for the subscriber
to send fixed size data packets. This schedule supports real-time applications including
VoIP or TDM transport. The UGS pre-scheduled grants guarantee reserved bandwidth
and reduce latency introduced by repetitive grant requests. The service flow will not
transmit packets larger than nominal grant interval.
Traffic Scheduling Algorithm
The base station scheduling algorithm uses two scheduling passes. On the first pass, the
scheduler attempts to allocate bandwidth to meet the minimum rates for all active service
flows. If there is available bandwidth remaining at the end of the first pass, the scheduler
executes a second pass and attempts meet all specified maximum rates. During both
passes, bandwidth allocations are assigned based on the following order of assessment:
1. Priority of the scheduling service type, from highest to lowest (rtPS first, and then
BE).
2. Traffic Priority setting when multiple service flows have the same service type.
Wireless transmission bandwidth is optimized by granting allocations based only on
traffic available for immediate transmission: only the required bandwidth is allocated,
and idle service flow channels do not receive any bandwidth allocation.
This section describes the characteristics of the base station terminal.
Figure 6: System - Front Panel
All indicator LEDs, power receptacles, data ports, and the reset switch are located on the
front panel of the terminal. There is a ground terminal provided at the rear of the
terminal.
3.1.1 Mounting
The terminal can be freestanding on a flat surface, or mounted into a standard 19-inch
equipment rack.
3.1.2 Power Supply
Power supply options include single or dual AC or DC supplies, or a combination of AC
and DC power supplies. Cables are included with both AC and DC power supplies. Refer
to section 8.6: DC Power Connections on page 109 for additional information about DC
power wiring.
Warning to service personnel:
Caution for all AC and DC models – Double Pole/Neutral fusing.
3.1.3 Wireless Section
This section describes the wireless port, base station time synchronization ports, and
wireless LEDs.
The terminal has a female N-type port for connection to the modem using a coaxial cable.
This port provides the following functions:
- Local oscillator signal for synchronization between the terminal and radio
- Telemetry signals for control and monitoring the modem
- IF modulated data to/from the radio (wireless interface)
- 24 VDC power to power the radio
Time Synchronization Port
The synchronization interface has two SMA female connectors located on the front panel.
Refer to section 8.6: DC Power Connections on page 109 for additional information.
Wireless LEDs
Link LED
The wireless Link LED flashes once every 8 frames to provide a 'heartbeat' indicator.
This indicates proper communication with the outdoor unit (ODU), and that the framer is
operating correctly. If this LED is not flashing, there is no possibility of establishing a
wireless link.
Table 4: System - Wireless Link LED Indications
LED State Description
FLASH Wireless interface enabled and functioning correctly.
OFF Wireless interface unavailable.
Signal LED
The Signal LED flashes each time a message is received from any subscriber. Message
types include: periodic ranging messages, bandwidth requests, and user data traffic.
Table 5: System - Wireless Signal LED Indications
LED State Description
ON Messages being received from subscribers.
OFF No wireless link activity.
3.1.4 Ethernet Section
This section describes the Ethernet LEDs and port connections.
Figure 8: System - Front Panel Ethernet LEDs and RJ-45 Ports
Data Port
The Data port is always enabled. The port can be programmed to operate in full duplex or
half duplex mode and at 10 Mbps or 100 Mbps.
The Reset button is recessed in the front panel of the terminal. To operate the switch,
use a small narrow object (i.e., paper clip) to depress the switch.
Table 13: System - Front Panel Reset Switch
Operation Result
Depress switch
less than 5
seconds
Depress switch
longer than 5
seconds
3.1.6 Grounding Connection
A ground terminal is located on the rear of the terminal. Correct grounding is very
important for safe operation of wireless equipment.
3.1.7 Console Port
The console port requires a crossover (null modem) cable to connect directly to a PC
serial port emulating a VT-52 or VT-100 terminal. The following table lists the default
settings for the Console port:
Short-reset. A short-reset is equivalent to cycling the
terminal power off/on. Statistics counters are reset.
Long-reset. A long-reset sets the IP address and
password to the factory defaults. Refer to Troubleshooting
section.
Table 14: System - Console Port Default Settings
Baud 57,600
Data Bits 8
Flow Control None
Parity None
Stop Bits 1
The following table lists the Console port pinout and associated signals.
Table 15: System - Console Port (RS-232) Pinout
Pin Name RS232 V.24 Description
2 RXD BB 104 Receive Data
3 TXD BA 103 Transmit Data
5 GND AB 102 System Ground
The radio modem is housed in a weatherproof aluminum alloy case. The modem features
are listed in the following sections.
Figure 10: System - Transceiver and Antenna
IF Port
The modem has a female N-type port for connection to the terminal using a coaxial cable.
Through this port and cable, the modem:
- Sends/receives IF modulated data to/from the terminal.
- Transmits status information to the terminal.
- Receives control information from the terminal.
- Receives DC power from the terminal.
RF Port
The modem RF port (female N-type connector) is used for sending/receiving the RF
signal to/from the antenna. A short coaxial cable is provided to connect the modem to the
antenna.
3.2.2 Antenna
The antenna RF port (female N-type connector) is for sending/receiving the RF signal
to/from the modem. A short coaxial cable is provided to connect the antenna to the
modem.
3.2.3 Antenna Mounting Bracket
A vertical-mount bracket is provided with the system. The vertical mount bracket can
accommodate 4.45 - 11.45 cm (1 ¾ - 4 ½") OD masts found on many commercial tower
installations.
All configuration and monitoring functions can be performed using the web-based
interface described in detail in this chapter.
4.1 System Menu
When you login to the base station the General Information page is displayed. A menu
of all available monitoring and configuration screens is located at the left side of the
screen. Point and click any of the menu items in the menu to display the selected screen.
Click Status in the system menu (left side of screen) to view status information about the
wireless interface and Ethernet management interface. Values are updated according to
the screen refresh rate.
Figure 15: Web: Monitoring - Status - Wireless Status Screen
Wireless Status
CINR [dB]: Mean Carrier/(Interference + Noise) ratio. The CINR value is calculated and
displayed for each automatic screen refresh. The CINR measured by the base station is
based on the signal from the subscriber. Based on this value, the base station may request
that the subscriber change modulation rate.
Traffic Downlink [kbps]: Rate of traffic transmitted to subscribers.
BW Margin Downlink [kbps]: Downlink bandwidth available that can be scheduled by
the base station (based on the minimum traffic rate settings for all active service flows).
CRC Errors: Number of CRC errors detected on packets received from subscribers. This
counter is reset when an base station is rebooted.
Note: The CRC Errors counter in the SS Info screen is reset when a subscriber is
registered.
Air Interface Status: Status of the base station modem:
Enabled - Transceiver is operating normally.
Disabled - Transceiver is disconnected, disabled, or defective.
IDU Temperature [Celsius]: Internal temperature of the indoor terminal.
Power Supply Status: Display the status of the power circuits.
A-On - Terminal is equipped with AC circuits only.
D-On - Terminal is equipped with DC circuits only.
A-D - Terminal is equipped with AC and DC circuits.
Active DL Service Flows: Number of currently active downlink service flows.
DL SMC Rate [kbps]: Data rate for downlink channel.
DL Bandwidth Usage [%]: Current usage of downlink channel.
Reference RSS [dBm]: The Reference RSS setting is the target value for average
Received Signal Strength (RSS) for subscribers RF signals received by the base station.
This target value allows automatic adjustment of the subscriber Tx power for optimum
performance with the minimum of RF interference. The suggested default setting for the
Reference RSS value is:
Channel Size Initial Setting
3.5 MHz -75 dBm
These are the suggested initial settings; adjustments to this target value must be made
based on the individual RF characteristics of each deployed sector. The RSSI value
(dBm) for each subscriber can be monitored using the base station SS Info screen (Web
interface). Tx power adjustments are based on a number of factors, and differences of up
to 7 dB may be observed between the Reference RSS setting and measured RSSI.
RF Tx Power [dBm]: Radio transmission output power level.
7.0 MHz -72 dBm
Traffic Uplink [kbps]: Rate of traffic received from subscribers.
BW Margin Uplink [kbps]: Uplink bandwidth available that can be scheduled by the
base station (based on the minimum traffic rate settings for all active service flows).
Registered SS's: Number of subscribers currently registered with the base station.
SC Synchro Status: Status of the base station time synchronization. Refer to the
RedMAX Base Station Installation Guidelines for complete details of the synchronization
feature.
No Synch - base station is not using synchronization.
Master with GPS Synchro - base station is Master and is synchronized to an
external GPS clock.
Master - base station is Master and is using internal clock.
Slave - base station is Slave.
Backup Slave - base station is Backup Slave and will assume Master operations if
Master is unavailable.
ODU Temperature [Celsius]: Internal temperature of the modem.
Fans Status: Display the status of the system cooling fans.
oneFanOn - A single cooling fan is operating.
twoFansOn - Both cooling fans are operating.
Active UL Service Flows: Number of currently active uplink service flows.
UL SMC Rate [kbps]: Data rate for uplink channel.
UL Bandwidth Usage [%]: Current usage of uplink channel.
Noise Level [dBm]: Indicates the noise level. This value is measured by sampling the
radio receiver input during idle periods (base station and subscribers are not transmitting)
and provides an indication of the average level of interference in the sector.
The interface panel provides statistics for the wireless interface (802.16), the data
Ethernet port Data), and the management (Mgmt) Ethernet port. Select the desired
interface and Click Refresh to update the screen.
Figure 16: Web: Monitoring - Status - Wireless Statistics Screen
Interface: Click the arrow in the menu box to select the desired interface:
802.16 - Wireless interface.
802.3 Data - Data Ethernet port.
802.3 Mgmt - Management Ethernet port.
Clear: Click Clear to reset the statistics on the selected interface.
Refresh: Click Refresh button after changing the selected interface type, or anytime to
display the latest statistics for the selected .
Status
Speed: Current speed of the interface.
Operational Status: Display the current status of the wireless interface.
Up - Operational link to at least one subscriber.
Down - No operational links to subscribers.
Last Change: Time of the last change in the operational status or the wireless link.
Ingress
In Octets: Total number of good octets received.
In Unicast Pkts: Total number of received valid Ethernet frames with a unicast
destination address.
In Not Unicast Pkts: Total number of received valid Ethernet frames with a multicast or
broadcast destination address.
In Discards: Total number of valid Ethernet frames that are discarded due to lack of
buffer space. This includes both frames discarded at ingress and frames discarded at
egress due to priority and congestion at the output queues.
In Errors: Total number of Ethernet frames that are discarded because of invalid Frame
Check Sequence (FSC).
Egress
Out Octets: Total number of good octets transmitted.
Out Unicast Pkts: Total number of frames transmitted with a unicast Destination
address.
Out Not Unicast Pkts: Total number of frames transmitted with a Multicast or Broadcast
Destination address.
Out Discards: Total number of valid Ethernet frames that are discarded due to lack of
buffer space. This counter is always 0 (all such discards are already counted in
InDiscards).
Out Errors: Total number of packets that were transmitted with an invalid FCS.
Click SS Information in the menu (left side of screen) to view system information,
Ethernet address settings, and wireless statistics for active subscribers.
Figure 17: Web: Monitoring - SS Info Screen
SS Information
Name: User-assigned name for subscriber. Click on the subscriber name (blue text) to
view the service flows settings and statistics.
IP: Secondary management channel (SMC) IP address for this subscriber.
Mgm: Indicates if the subscriber can be managed over the wireless interface. Refer to the subscriber user manual for additional information about enabling remote management.
yes: The subscriber supports remote management.
no: The subscriber can not be managed remotely.
DL Mod: Modulation/coding setting for downlink channel.
UL Mod: Modulation/coding setting for uplink channel.
Min CINR: Minimum average CINR since system reboot.
Max CINR: Maximum average CINR since system reboot.
Curr CINR: Current CINR value.
UL CRC: Total number of CRC errors detected in transmissions from this subscriber.
DL CRC: Total number of CRC errors reported in transmissions to this subscriber.
RSSI: Received signal strength indicator value measured based on the signal received
from this subscriber.
Tx Pow: Transmit power of this subscriber.
Dist: Calculated distance from base station to subscriber (kilometers).
Refresh: Click
Refresh to update the screen with the latest values.
There are four steps associated with creating service flows:
Note: A service class can not be deleted until all provisioned/active service flows
referencing this service class have been deleted.
1. Create service class.
Each service class defines a set of QoS parameters that can be associated with a
service flow. Multiple service class definitions can be added to create a library of
service classes. By creating a set of standardized service classes, new service flows
can be added that conform to pre-defined service level agreements (SLAs). Each
service class definition includes traffic rates, latency settings, priority, and
transmission policy settings.
2. Create service flow.
All service flows are based on existing service class definitions. Separate service
flows are required for downlink and uplink traffic. Each definition requires
identifying the subscriber, flow direction, class of service, and the classifier type.
3. Define classifier.
A unique set of classifier rules can be defined for each service flow, depending on the
classification type (i.e., Packet, 802.3/Ethernet) selected when the service flow is
created. All associated classifiers are deleted when the service flow is deleted.
4. Activate
A new service flow is not activated until a classifier is assigned (click Add in the
Classifier screen).
If the target subscriber is registered a Dynamic Addition Session (DSA) session is
initiated. During a DSA session, the service flow is in Requesting state. If the DSA
session is successful, the state is set to Active. If the DSA session is not successful, the
state is set to Rejected.
If the target subscriber is not
associated subscriber is registered. The subscriber registration triggers the activation
of all associated service flows.
registered, the service flow request is stored until the
Click Subscribers in the menu (left side of screen) to view a summary of the subscribers
currently configured on the base station.
Figure 21: Configuration - Service Class Screen
Subscriber Index: Unique index number to identify this subscriber. This number is
generated automatically by the base station. The user can also specify an index number
(must be unique) when creating a new subscriber entry.
Subscriber MAC: MAC address of the subscriber. You must enter this information
when creating a new subscriber entry.
Subscriber Name: Enter the name for this subscriber. This reference is displayed when
managing service flows and classifiers.
Note: When upgrading from RedMAX v1.0 this field will automatically be populated with
the subscriber MAC address. The name is not imported from the subscriber (set using
SNMP or CLI).
Max Hosts Number: Enter the maximum number of MAC addresses to discover on the
Ethernet interface to this subscriber. Valid only if
Learning Enabled=Yes.
Learning Enabled: The MAC learning feature allows the base station to automatically
learn the MAC addresses of up to sixteen hosts (devices) on the Ethernet segment
connected to a subscriber. The learning feature can be enabled individually for any
subscriber.
Yes: Auto-learning is enabled for this subscriber.
No: Auto-learning is disabled for this subscriber.
Only (up to) the first sixteen learned hosts are recorded. The subscriber and base station
do not use 'MAC aging' and each learned host address will remain in the learning table
until the subscriber is rebooted. Reboot the subscriber to clear the MAC address table and
discover the current active hosts.
Add: Click
Add to create a new subscriber listing. This button is active only when a new
MAC address has been specified in the Subscriber MAC field. When adding new
subscribers, the MAC learning feature is enabled by default and the host number is set to
one (1).
Delete SS
Subscriber: Select the name of the subscriber to be deleted.
Delete: Click Delete to deactivate and remove all classifiers and service flows for this
subscriber. The subscriber will be removed from the subscribers list.
Subscribers
Select: Use this field to select the name of the subscriber to be viewed, edited, or used as
a template for creating a new subscriber entry.
Template: Select a subscriber and click Template to display the current settings in the
upper portion of the screen. These settings can be modified and used to create a new
subscriber entry. Click
Edit: Select a subscriber and click Edit to display the current settings the upper portion
of the screen. These settings for this subscriber can now be modified. Click Modify.to
save changes to this subscriber entry. You can not modify the index number for a
subscriber.
Add to create the new subscriber entry.
Important: Modifying an existing subscriber will cause the base station to delete and
recreate all service flows and classifiers for this subscriber.
Click Service Classes in the menu (left side of screen) to view, add, or delete service
class definitions. The base station will guarantee the QoS parameters for service flows
created referencing this service class.
Multiple service class definitions can be created to build a library of service classes. A
service class can not be deleted until all provisioned/active service flows referencing this
service class are deleted.
Figure 22: Configuration - Service Class Screen
Service Class Configuration Screen
Add a Service Class
Service Class Name: Enter a name for this service class. The name can be any
combination of up to 30 letters and numbers.
Traffic Priority: Enter the priority to be used for service flows created using this service
class. The priority is relative only to other service flows on the same subscriber. The
value '7' represents the highest priority.
Note: This is not the Ethernet (802.1p) priority setting.
Max. Sustained Rate (bps): Enter the maximum sustained wireless reserved rate. A
service flow created using this service class is limited to sustained transmission at this
rate (peak may be higher).
Min. Reserved Rate (bps): Enter the minimum wireless reserved traffic rate. T A service
flow created using this service class is guaranteed sufficient bandwidth for this rate.
Max Latency (ms): Enter the maximum latency allowed when forwarding packets from
the Ethernet port to the wireless interface. A service flow created using this service class
is guaranteed to have latency of less than or equal to this setting.
Fixed Vs. Variable Sdu Ind: Specify if all Ethernet packets are padded to the same
length.
fixedLength: All Ethernet packets is the same length.
variableLength: Ethernet packets is variable lengths.
Sdu Size: Enter the size for Ethernet packets. Enabled only if fixedLength is selected in
Fixed vs. Variable Sdu Ind field.
Scheduling Type: Select the type of scheduling service.
bestEffort: (BE) For applications that do not require a minimum bandwidth
allocation. Required settings are:
Max. Sustained Rate
Traffic Priority.
nonRealTimePollingServices: (nrtPS) For applications requiring variable-sized
SDUs transmitted at a minimum sustained data rate. Required settings are:
Traffic Priority.
Max. Sustained Rate
Min. Reserved Rate
realTimePollingServices: (rtPS) For applications requiring variable-size SDUs
transmitted at regular intervals. Required settings are:
Max. Sustained Rate
Min. Reserved Rate
Max. Latency.
unsolicitedGrantService: (UGS) For applications requiring fixed-length data packets
issued at periodic intervals. Required settings are:
Min. Reserved Rate
Max. Latency
Req Tx Policy: Check items to configure transmission policy features. Selecting a
control inhibits the specified operation:
noBroadcastBwReq(0): Do not
noPiggybackRequest(2): Do not
broadcast bandwidth requests.
piggyback bandwidth requests.
noFragmentData(3): Do not fragment Ethernet packets.
noPHS(4): Do not
support payload header suppression.
noSduPacking(5): Do not pack multiple Ethernet packets in a wireless MAC packet.
noCRC(6): Do not
Add: Click
Add to create a new service flow definition.
Modify: Click Modify to change the service class definition.
attach the CRC field to the end of a Wireless MAC packet.
Page 47 of 117
Page 48
RedMAX™ Base Station
User Manual
Note: Changing a service class definition will interrupt traffic on referencing service
flows until they have become active again.
Delete a Service Class
Service Class Index: Select an existing service class.
Delete: Click Delete to delete the selected service class definition.
View Service Class
Service Class Index: Select an existing service class.
Select: Click Select to display the selected service class definition.
ShowAll: Click ShowAll to display all service class definitions.
HideAll: Click HideAll to not display any definitions.
CLsIdx: Unique index number assigned to a service class.
SC Name: Name of service class.
Traffic Prio.: Priority setting (relative to other service flows on the same subscriber).
MaxSTR: Maximum sustained traffic rate setting.
MinRR: Minimum reserved rate setting.
MaxLat: Maximum latency setting.
Fixed Vs Var.Sdu: Format for SDU.
Fixed: Variable length SDU's are allowed.
Variable: Only fixed length SDU's are allowed.
SduSize: Size of SDU (if fixed)
SchedType: Scheduling type for this service class.
ReqTxPol: List of enabled transmit policies. Number 4 (representing enabled noPHS)
will always be in the list. If a user, for example, checks noSduPacking checkbox then the
number 5 will also be in the list. Note that number 6 will never be in the list as the
noCRC checkbox cannot be selected.
Click Service Flows in the menu (left side of screen) to view, add, and delete service
flows. Service flows provide the ability to set up multiple uplink and downlink
connections to each subscriber in a sector, and each service flow may be assigned a
unique service level category and separate QoS settings. A service flow is not fully
activated until at least one classifier is assigned.
Default UL/DL Service Flows
The default service flows are used to pass traffic not matching any user-defined service
flow (such as broadcast ARP) between the base station and subscribers. The default
downlink service flows can not be disabled. A single setting enables or disables (default)
the default uplink service flows for all subscribers in a sector.
Important: When dynamic MAC Learning is enabled (see 4.3.1: Subscribers on page 44)
the default uplink service flows must be enabled (see Error! Reference source not found.: Error! Reference source not found.Error! Bookmark not defined.).
Table 17: System - Default Service Flow Throughput
Channel Max Throughput*
Downlink 64 Kbps (shared by all subscribers)
Uplink 8 Kbps (per subscriber)
*FIFO operation - all packets exceeding these rates are discarded.
Figure 23: Configuration - Service Flow Screen
Add Service Flow
Next Sfld: This identifier value is assigned to the next new service flow.
SS Name: Name of subscriber associated with this service flow.
Direction: Direction of service flow. Separate service flows are required for upstream
and downstream traffic.
Downstream: Downlink traffic from a base station to a subscriber.
Upstream: Uplink traffic from a subscriber to the base station.
SC Name: Select the service class definition for this service flow.
Cs Specification: Classification type associated with this service flow.
802.3 Eth: The classifiers for this service flow are based on the combination of fields
in the Ethernet header.
802.1Q VLAN: The classifiers for this service flow are based on the combination of
the fields in the Ethernet header and 802.1Q VLAN tag.
IPv4: The classifiers for this service flow are based on the IPv4 IP header.
IPv4 Over 802.3: The classifiers for this service flow are based on the combination
of fields in the IPv4 header and the Ethernet header.
IPv4 Over 802.1Q: The classifiers for this service flow are based on the combination
of fields in the IPv4 header and the 802.1Q VLAN tag.
Important: Before using IP classification, the base station must be configured to
use the default uplink service flows. Refer to the CLI 'wireless' command settings
in section 0:
The debug command is used to view diagnostic information for the AN-100u base
station.
Table 23: CLI - Interface Command
Command Parameter/Description
debug
dump- Save the information to the specified FTP server.
<Server> - IP Address of the Server to dump data to
<File> - File Name of the dump data
mode- Show/change the current debug mode setting.
level - <normal(0) | monitoring(1) | debug(2)>
server - IP address of the default FTP server for automatically
debug info dump upon system errors.
reset - Reset the DEBUG data structure content.
CrcErrors - absolute
SymErrors - absolute
DlSdus - absolute
phy - Display MAC subgroup statistics.
monitor - Enter into monitor mode, press any key to exit.
txmode - Set to continuous transmit
interfaces starting on page 78.
Add (Modify): Click Add to create a new service flow definition using the current
settings. This button is also displayed as Modify after clicking the Template or Edit .
Note: Service flows can be activated only after the requested configuration is validated
and saved. See 4.3.5: Manage -- Save Provisioning Information on page 58.
Delete SF (all associated Classifiers will be deleted)
Service Flow Identifier: Unique index number of the service flow to be deleted.
Delete: Click Delete to delete the selected service flow definition (and all associated
classifiers).
Note: If the subscriber using this service flow is not currently registered, the service flow
is deleted immediately. If the subscriber is registered, a Dynamic Service Deletion (DSD)
session is initiated to delete the service flow. During the DSD session, the service flow is
in Requesting state. The service flow is deleted when the subscriber sends
acknowledgement or becomes deregistered.
mode.
Service Flows
Select: Select the unique index number for the service flow to display.
Template: Click Template to modify any field for the selected service flow. Clicking
the Edit button changes in the fields adjacent to the Modify button (top of screen).
Edit: Click Edit to change only the service class associated with this service flow.
ShowAll: Click ShowAll to display settings for all service flows.
HideAll: Click HideAll to hide the settings for all service flows.
Enable: Click Enable to enable this service flow (will be provisioned to active).
Disable: Click Disable to disable this service flow (will not be provisioned).
Service Flow Status Display
Left-click the mouse on the heading for any column to sort the table using that selection.
SFID: Unique index number assigned when this service flow was created. This number is
required when creating a classifier for the service flow (classifier configuration screen).
SS MAC: MAC address of the subscriber associated with this service flow.
SS Name: User-assigned name for the subscriber associated with this service flow.
Direction: Indicates the direction assigned to the service flow.
Downlink: The direction of data traffic is towards the subscriber.
Uplink: The direction of data traffic is from the subscriber.
SC Name: Name of the service class definition associated with this service flow (hover mouse pointer over name to display service class index number).
Authorized: Service flow configuration has been saved but is not active.
Edited: Service flow configuration is being edited and is not saved.
Provisioned: Deregistering a subscriber triggers the automatic transition of all
associated service flows to Provisioned.
Rejected: Base Station was not able to setup the service flow.
Requesting: Base Station is attempting to setup the service flow.
Provisioned Time: Time stamp of when an action was last performed on the service
flow. This time stamp is displayed in hours, minutes, and seconds (hh:mm:ss) relative to
when the base station was rebooted. If required, the absolute time and day of an event can
be determined using the Time Since System Restart on the General Information page:
Current Time - (Time Since System Restart - Provisioned Time)
Note: A value of '00:00:00' indicates that the service flow was created before the base
station was rebooted, and the service flow has not been activated.
Cs Specification: Classifier type associated with this service flow. Refer to section 4.3.4:
Classifiers on page 54 for supported classification types.
Enable/Disable: Displays the current state of the service flow:
Enabled: Service flow is provisioned by the base station.
Disabled: Service flow will not be provisioned by the base station.
Click Classifiers in the menu (left side of screen) to view, add and delete service flow
classifiers. Any active service flow must have at least one active classifier. The 802.16
Service Flow can have multiple classifiers (classification rules). New classifiers become
active after clicking the Add button on this screen.
When multiple classifiers are defined for one service flow, the index number is listed in
the form X.Y where:
X == Service Flow index (SfId)
Y == Classifier index number
When a service flow is activated, the classifiers become active by default. A service flow
can have both active and inactive classifiers only when the service flow is already active
and new classifiers are added. New classifiers become active only after they are
successfully implemented on both the base station and the subscriber.
Figure 24: Configuration - Classifier Screen
Classifier Configuration Screen
Add a Classifier
To SFID: Select the index number of the service flow. Refer to the Service Flows
Configuration screen for a list of all service flows.
Priority: Check this box to set a priority for this classifier. When a packet can be
classified by more than one classifier definition, it is classified according to the classifier
with the highest priority setting. Enter a priority value from 0 to 255 (highest priority).
Packets are tested beginning with classifier definition having the highest priority value.
The packet is processed based on the first discovered match. If classifiers have equal
priority, the order of evaluation can not
DestMacAddr: Check this box to enable classification based on a destination MAC
address (downstream traffic from the base station). Enter the MAC address in the
adjacent field. When matched, downlink traffic is sent from the base station using the
associated service flow.
DestMacMask: Enter the mask value (hexadecimal) to be used with the destination
MAC address (DestMacAddr). Valid only if the DestMacAddr is enabled ( ). For
example:
1. A mask value of all ones (ff:ff:ff:ff:ff:ff) will match only
the MAC address entered in
the DestMacAddr field.
2. A partially specified mask value will match a range of MAC addresses. For example, a
mask value of 01:02:03:ff:ff:ff will match all MAC addresses where the first 48 bits are
01:02:03. The DestMacAddr should be set to all zeros.
3. A mask of all zeros (00:00:00:00:00:00) will match all destination MAC addresses.
The DestMacAddr field value is not used.
Note: Only one classifier can have a DestMacMask value set to all zeros.
SourceMacAddr: Check
this box to enable classification based on a source MAC
address (upstream traffic to the base station). Enter the MAC address in the adjacent
field. When matched, uplink traffic is sent from the subscriber using the associated
service flow.
SourceMacMask: Enter the mask value (hexadecimal) to be used with the source MAC
address (SourceMacAddr). Valid only if SourceMacAddr is enabled ( ).
Examples:
1. A mask value of all ones (ff:ff:ff:ff:ff:ff) will match only the MAC address entered in
the SourceMacAddr field.
2. A partially specified mask value will match a range of MAC addresses. For example, a
mask value of 01:02:03:ff:ff:ff will match all MAC addresses where the first 48 bits are
01:02:03. The SourceMacAddr should be set to all zeros.
3. A mask of all zeros (00:00:00:00:00:00) will match all source MAC addresses. The
SourceMacAddr field value is not used.
Note: Only one classifier can have a DestMacMask value set to all zeros.
EnetProtocolType: Check this box to enable classification based on the protocol
transported by Ethernet. Select Ethernet type from the list: Ethertype for Ethernet version
2 and 802.3 SNAP, and DSAP for 802.3 LLC.
EnetProtocol: Enter the identifier of the protocol transported by Ethernet. Valid only if
an EnetProtocolType is selected. Valid Ethertype values are from 1,501-65,536. Valid
DSAP values are from 0-169 and 171-255. For example, in order to allow IP traffic, set
EnetProtocolType to Ethertype and EnetProtocol to 2048 (0800 hex).
Note: Classifier settings are effective immediately when created.
Remove Classifier
Service Flow Identifier: Select an existing classifier to be deleted. The format is:
Service Flow ID. Classifier ID
Delete: Click Delete to permanently delete the selected classifier.
View Classifiers
SFID.ClsID: Identifiers for the selected classifier. The format is:
Service Flow ID. Classifier ID
Show: Click Show to display the setting for the service flow selected in the Service
Flow Identifier field.
ShowAll: Click ShowAll to display settings for all service flows.
HideAll: Click HideAll to hide settings for all service flows.
Classifier Table
SFID.ClsID: Identifiers for the selected classifier. The format is:
State: Current state of the service flow:
Active: Classifier is currently active.
Inactive: Classifier is not currently active.
Prio: Priority setting for this classifier.
DestMac: When displayed, classification is based on this destination MAC address.
Addr: Destination MAC address.
Mask: Destination MAC mask.
DestMac: When displayed, classification is based on this source MAC address.
Addr: Source MAC address.
Mask: Source MAC mask.
Enet Type/Prot: When displayed, classification is based on Ethernet protocol type and
protocol.
UserPri: Matching parameters for the Ethernet IEEE 802.1D user priority value
(Ethernet packets with 802.1Q encapsulation). A packet will match if the priority setting
is equal to, or falls between, the high and low range setting. Valid settings are zero to
seven (0 to 7).
Low: Lowest priority setting of range.
High: Highest priority setting of range.
VlanID: Ethernet packet 802.1Q VLAN tag. Valid only if Cs Specification is 802.1Q.
Ip Prot.: IPv4 specification. Valid only if the service class Cs Specification is IPv4.
EnetProtocol: When displayed, classification is based on this Ethernet protocol.
Tos: Matching parameters for the IP type of service/DSCP (IETF RFC 2474). An IP type
of service (ToS) packet will match if the "ip-tos" value, after the mask is applied, is equal
to, or falls between, the high and low range setting. Valid settings are 0 to 7.
Click Manage in the menu (left side of screen) to determine if there are unsaved changes
to the service classes, service flows, or classifiers.
Figure 25: Configuration - Save SF Configuration Screen
Save Provisioning Configuration
Save Provisioning Configuration: This screen indicates if there are unsaved changes to
service classes, service flows, or classifiers.
No Modifications Detected: There are no unsaved changes.
Modifications Detected: There are unsaved changes.
Save: Click Save to save all changes. Saving changes will copy all service class, service
flow, and classifier configuration data to non-volatile memory. When the base station is
rebooted, all unsaved changes to the service classes, service flows and classifiers are
discarded.
The Save button control is active only if there are unsaved changes to service classes,
service flows, or classifiers.
Clear Provisioning Configuration
Clear Provisioning Configuration: Clear all service flow configuration data.
Clear: Click Clear to remove all changes made since the last save.
RF DL Channel KHz: (*) Enter the channel frequency to use for all subscribers in the
sector. The setting is validated against the type of radio installed. The center frequency
setting can be made in steps of 250 KHz, and the center frequency setting must allow for
the channel size and not exceed the granted frequency range. For example, when using a
7 MHz channel, the center frequency must be at lease 3.5 MHz inside the band limits.
Important: RF Channel Settings
Operation in the FWA band is subject to license. The radio frequency selections must
be set correctly before the installed system is allowed to transmit. The installed system
must
comply with all governing local, regional, and national regulations. Contact
authorities in the country of installation for complete information regarding the licensing
regime and operating restrictions for that regulatory domain.
RF Channel Separation KHz: (*) Select the separation between channels (HD-FDD
radio only) where: UL Channel = DL Channel + Separation.
Tx Output Power dBm: Select the output power level (dBm) of the radio.
Important: RF Power Settings
Operation in the FWA band is subject to license. The radio power selections must
set correctly before the installed system is allowed to transmit. National Interface
documents may identify a maximum output power for the wireless system, expressed in
terms of an EIRP level that must not
all governing local, regional, and national regulations. Contact authorities in the country
of installation for complete information regarding the licensing regime and operating
restrictions for that regulatory domain.
be exceeded. The installed system must comply with
SS Tx Power Control Enable: Check this box to allow the base station to
automatically adjust the transmit power level of subscribers. When enabled, the base
station continually monitors the subscribers and adjusts the transmission power to
maintain a requested RSSI value.
be
Reference RSS: Select the target value for average Received Signal Strength (RSS) for
subscribers. The Reference RSS setting is the target value for average Received Signal
Strength (RSS) for subscribers RF signals received by the base station. This target value
allows automatic adjustment of the subscriber Tx power for optimum performance with
the minimum of RF interference. The suggested default setting values are indicated in the
following table:
Table 18: System - Wireless Channel Reference RSSI
Channel Size Initial Setting
3.5 MHz -75 dBm
7.0 MHz -72 dBm
These are the suggested initial settings; adjustments to this target value must be made
based on the individual RF characteristics of each deployed sector. The RSSI value
(dBm) for each subscriber can be monitored using the base station SS Info screen (Web
interface). Tx power adjustments are based on a number of factors, and differences of up
to 7 dB may be observed between the Reference RSS setting and measured RSSI.
Auto Rx Gain Enable: Check this box to enable automatic adjustment of the receiver
sensitivity.
PHY Parameters
Band Select MHz: (*) Select channelization type in accordance to 802.16 OFDM PHY
system profiles.
Channel Size MHz: (*) Select the channel size. Menu selection is based on the type of
radio installed. Refer to the appendices for a list of supported radios.
Guard Interval: (*) Select the cyclic prefix.
MAC Parameters
Frame Profile: Configure the frame size and usage profile.
Frame Duration ms: (*) Select the wireless frame duration (ms). Selections are
based on the channel size. This setting affects the system latency.
DL Ratio %: Enter the downlink usage as a percentage of frame size. This setting
provides traffic shaping on the uplink and downlink traffic profiles.
The DL ratio is dynamic and can be changed at any time without reboot. The DL
Ratio setting in the Wireless Configuration page allows the selection between the
minimum and maximum values specified in the following table (based on Frame
Duration, Channel Bandwidth and Guard Interval settings):
Table 19: System - Wireless Channel Selection (3.4 - 3.6)
Frame Duration
(ms)
5 3.5 1/4 58 75
1/16 50
7 1/4 30 80
1/16 25
10 3.5 1/4 26
1/16 25
7 1/4 85
1/16
Channel Size
(MHz)
Guard Interval Lowest DL
Ratio (%)
Highest DL
Ratio (%)
Synchronization Mode: (*) Select the synchronization mode. Refer to the RedMAX
base station Installation Guidelines for details of the synchronization feature.
No Synch: Synchronization feature is disabled.
Master: This base station provides the master synchronization pulse for each
connected slave base station (without external GPS clock source).
Master with GPS Synchro: This base station is connected to a GPS clock and
provides the master synchronization pulse for each connected slave base station.
Backup - Slave: This slave base station acts as a backup if the master base station
fails to provide synchronization pulses. This feature operates with or without an
external GPS clock connection.
Slave: This base station synchronizes its operations to the synchronization pulse
received from the Master or Backup Master base station.
Cell Range km: (*) Enter the distance to the subscriber located the farthest distance from
the base station.
Disable RF: Click
DisableRF to disable the modem output. This is for test purposes
only. The base station terminal must be reset to restore operation of the radio transmitter.
Save: Click Save to save and apply the current settings. Settings not marked with a red
asterisk are effective immediately. Settings marked with a red asterisk (*) only become
only effective after resetting the terminal.
Cancel: Click Cancel to restore all fields to the last saved values.
Default: Click Default to change all fields to the factory values.
Click Ethernet Interface in the system menu (left side of screen) to view and configure
the front panel Data and Management (Mgmt) Ethernet ports, and the Intra-Sector Layer2 Forwarding (iSL2F) feature.
Management: Use this selection to choose which front panel Ethernet port accepts
management traffic.
Via Data port: The Data Ethernet port is used for data and local management traffic.
The Mgt port is disabled.
Via Management port: Only the Mgt Ethernet port is monitored for local
management traffic. Select this mode only when data and management networks are
physically isolated.
Data Port Settings: This setting controls the speed of the Ethernet Data port.
Disabled Mode: When the Intra-Sector L2 Forwarding feature is disabled, the base
station will not forward traffic between subscribers (hair pinning) or accept traffic
resubmitted to the Ethernet port by an external switch.
External Mode: When external mode selected, the base station will accept traffic
resubmitted to the Ethernet port. This permits an external switch to forward traffic
between hosts located behind subscribers in the same sector.
Internal Mode: When internal mode is enabled, the base station classifies and
forwards traffic between hosts located behind subscribers in the same sector (hair
pinning) without requiring an external switch. Affected traffic is resubmitted directly
to the wireless interface MAC.
this box to enable automatic time change for daylight
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Refresh: Click Refresh Time to poll the time server for the current time.
DHCP Relay Agent Parameters
The subscriber can obtain an IP address from the DHCP server only through an base
station acting as a DHCP Relay Agent. A subscriber can not
any DHCP server on the network segment connected to its local Ethernet port. The base
station (acting as a DHCP Relay Agent) can be configured for two different modes:
SS-s should use the same DHCP Server as SC: Select this option to have the base
station forward all subscriber DHCP requests to the DHCP server that the base station
used to obtain its IP address (valid only if field Obtain IP Parameters from DHCP Server
is enabled above).
SS-s should use the following DHCP Server: Select this option to specify the DHCP
server to be used by subscribers.
DHCP Server: Specify the IP address of a DHCP server. The base station forwards
all subscriber DHCP requests to this address.
It important to configure the correct lease options on your DHCP Server:
a) The base station requires option 4, the address of a ToD Server (RFC-868).
obtain an IP address from
b) If you do not wish your devices to display GMT, you must add option 2 (Time Offset).
This is a value denoting the number of seconds to offset your time from GMT. For
example, for the offset of +2 hours you should enter 7200 (some DHCP servers may
require entering hexadecimal value). In North America, EST is -5 hours (-18000 seconds)
from GMT and the negative value must be entered.
Important: The base station must be rebooted to activate changes to the DHCP Relay
Agent settings.
VLAN Management
Enable Management with VLAN Tagged Traffic: Check this box to enable
management using VLAN tagged traffic for the SM CID. This setting is used to
configure tagged management for operation in systems where a single VLAN is used to
control the base station wireless equipment and the user equipment. After enabling this
setting, only traffic with the specified VID is recognized for any management commands.
This setting does not effect operation of the RS-232 Console port.
VLAN ID: Enter the VLAN ID. Only traffic tagged with this VLAN ID is recognized by
the sector controller management process.
Important: The VLAN network support should be verified before enabling this feature.
If the base station is not reachable using the VLAN tagged traffic, the Console port
(RS-232) CLI command must be used to disable this setting.
Save: Click
Save to save and apply the current settings.
Cancel: Click Cancel to discard all changes and return to the main screen.
Default: Click Default to set all settings to the factory default settings.
The following screens are used to configure the network settings, passwords, and to
download software updates to the base station.
4.5.1 Advanced Config
Click Advanced Config in the menu (left side of screen) to view and modify MAC
settings for modulation thresholds, and backoff settings. Changes to settings marked with
a red asterisk (*) are only effective after clicking the Save button and rebooting the
terminal. This screen has a separate user name and password.
Note: You must login as 'debug' user to access the Advanced Configuration screen.
Adaptive Modulation Enable: Check this box to enable adaptive modulation.
Enabling this control disables the default modulation settings.
Default DL Modulation: Select the default modulation and coding rate for the downlink
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will transmit data only using the selected
modulation/coding.
Default UL Modulation: Select the default modulation and coding rate for the uplink
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will receive data from subscribers only using the
selected modulation/coding.
Thresholds: Enter the adaptive modulation threshold values (dB) for each modulation
(based on measured CINR). The values are used only when Adaptive modulation is
enabled. There are two entry fields for each threshold setting (row):
- Minimum Entry Threshold (right column)
- Mandatory Exit Threshold (left column)
The modulation/coding is decreased by one step under the following conditions:
1. CINR drops below the exit threshold of the current CINR
2. CINR is between the entry threshold and exit threshold of the current UIUC and CRC
errors are detected in the uplink channel
Settings must be adjusted to match the characteristics of each deployment. Refer to the
following table for recommended threshold settings. These are applicable for independent
sector operation. Co-channel sector deployment in a cell may require further optimization
of the Adaptive Modulation settings.
Backoff settings are used when a subscribers experience collisions during link
establishment or while competing for additional bandwidth. The entered value represents
the binary exponent of the number of 'opportunities' to wait before responding to a base
station registration poll or a bandwidth request opportunity.
It is recommended to not change the Backoff values. Changes to these settings can
severely impact performance of the wireless link. Click the Default button in the
Advanced Config menu to restore the factory backoff settings.
Ranging Backoff Start: Enter the starting backoff window size for initial ranging
contention.
Ranging Backoff End: Enter the final backoff window size for initial ranging
contention.
Request Backoff Start: Enter the starting backoff window size for contention during
bandwidth requests.
Request Backoff End: Enter the final backoff window size for contention during
bandwidth requests.
Save: Click Save to apply and save the displayed settings. Changes to settings marked
with a red asterisk (*) are effective only after the base station is rebooted.
Cancel: Click Cancel to discard all changes and return to the main screen.
Default: Click Default to set all settings to the factory default settings.
Example: How Subscribers Use Backoff Settings
When a subscriber detects a collision during a registration attempt, the subscriber will use
a retry strategy to avoid repeating the collision. Consider the effects of the following
settings:
Ranging Backoff Start = 2
Ranging Backoff end = 4
Following a collision, the subscriber will skip between zero and four registration
opportunities (2
will skip a random number, between zero and eight registration opportunities (2
Backoff Start+1
sixteen registration opportunities (2
Ranging Backoff Start
). If the subscriber detects a collision during the retry, it
Ranging
). If a third collision is experienced, the subscriber will skip between zero and
Ranging Backoff End
). If a fourth collision is detected, the
process repeats as for the first detected collision.
Click Software Upgrade in the menu (left side of screen) to upload a new system
software image from a remote server. The terminal contains two non-volatile RAM banks
for storing the software. Each upload overwrites the standby (unselected) bank.
Use the following procedures to upgrade the base station.
The following items must be addressed before
beginning the upgrade:
1. You must obtain the latest base station binary files. You must copy the binary files
into the default file location for the FTP server. You can not
specify a 'path' in the
upgrade dialog.
2. The base station performs all software upgrades using an FTP server:
a) The FTP server must be located on the network connected to an active
Ethernet port (Data or Mgmt) on the base station.
b) The FTP server must have a user defined as follows:
username: target
password: secret
Upgrade Base Station
1. Start a Web browser session to the base station and login. The factory default
settings are as follows:
Login: admin
Password: admin
2. Click Software Upgrade in the left-hand menu and make the following settings:
Protocol: FTP
Server IP address: [enter address of FTP server]
User: target
Password: secret
File Path: [Enter binary file name -- including .bin extension]
3. Click Upgrade button and wait for the base station to download and save the binary
file. This process may take a few minutes. Progress is indicated in the Status field.
The Status Screen displays 'Update OK' when the upgrade is complete.
4. In the Software Upgrade screen, Click radio to select the new version of software.
Click Apply&Reset to activate the new software. Click Yes in the confirmation
dialog.
Note: When the base station is reset, all traffic stops for about 30 seconds and then
resumes as the subscribers are registered.
Click Backup and Restore in the menu (left side of screen) to manage the base station
saved settings. The configuration settings for the active and alternate software loads can
be saved to a network server reachable by the base station. Configuration files saved on a
remote server can be used to restore settings on a base station.
FTP Server IP Address: Enter the FTP server network address.
User Name: Enter the username of an account on the FTP server. This user must have
access rights to read and write files on the server.
Password: Enter the password for the user account.
File Name: Enter the path and file name of the configuration file to save or read.
When performing a backup, it is strongly recommended to use the default file
directory for the FTP server and enter only the file name in this field. It is also
recommended to specify a file name that includes the date and software revision.
Select Configuration:
Active: Save/restore the saved configuration for the active software load.
Alternate: Save/restore the saved configuration for the inactive software load.
Status: Displays status messages for the current operation.
Start Backup: Click
Start Backup to save the selected settings (Active/Alternate).
Start Restore: Click Start Restore to restore the selected settings (Active/Alternate).
Before Beginning a Backup
The following items must be addressed before beginning the backup:
1. The settings to be saved on a remote server must be saved in the memory bank
associated with the software binary file. To be sure that all current settings are saved:
a) Click Manage in the menu (left side of screen) and click Save to save all
changes (if button is active).
b) Click Manage in the menu (left side of screen) and click
changes (if button is active).
2. The base station performs all software upgrades using an FTP server:
a) The FTP server must be located on the network connected to an active Ethernet
port (Data or Mgmt) on the base station.
b) The FTP server must have a user account with read/write privileges.
Backup Base Station Settings
Use the following steps to backup the base station settings:
1. Start a Web browser session to the base station and login. The factory default
settings are as follows:
Login: admin
Password: admin
2. Click Backup and Restore in the menu and make the following settings:
User Name: Enter the username of a user that is defined on the FTP server and has
sufficient access rights to the read and write files.
Password: Enter the password for the user account.
File Name: Enter the path and name of the file to save.
When performing a backup, it is strongly recommended to use the default file
directory for the FTP server and enter only the file name in this field. It is also
recommended to specify a file name that includes the date and software revision.
Select Configuration: Select Active or Alternate.
3. Click Start Backup and wait for the base station to transfer the configuration file.
This process may take a few minutes and progress is indicated in the Status field.
Restore Base Station Settings
Use the following steps to restore the base station settings:
1. Start a Web browser session to the base station and login. The factory default
settings are as follows:
Login: admin
Password: admin
2. Click Backup and Restore in the menu and make the following settings:
User Name: Enter the username of a user that is defined on the FTP server and has
sufficient access rights to the read and write files.
Password: Enter the password for the user account.
File Name: Enter the path and name of the file to be restored.
Select Configuration: Select Active or Alternate.
3. Click
This process may take a few minutes and progress is indicated in the Status field.
4. If the restore operation was successful, and the destination was the Active memory
bank, the base station is automatically rebooted. When the base station is rebooted,
all traffic stops for about 30 seconds and then resumes as the subscribers are
registered.
Start Restore and wait for the base station to transfer the configuration file.
Change: Click Change to create a new account using these settings.
Delete User
Name: Select the name of an existing account to be deleted.
Your Password: Enter your login password.
Delete: Click Delete to create a new account using these settings.
User Accounts
Old Password: Enter the current password.
New Password: Enter a new password.
Confirm Password: Re-enter the new password.
Your Password: Enter your login password.
Change: Click Change to save and apply changes.
Note: To delete an administrator account, you must login using another administrator
account. To delete an administrator account: 1) change the account to be deleted to type
'guest', 2) delete the account.
The base station can be configured and monitored using the command line interface
(CLI) commands. This section describes the procedures for configuring and operating the
base station using the CLI over a Telnet connection.
5.1 Connecting via Telnet
To connect to the base station, open a Telnet session to the IP address of the base station
(default address is 192.168.101.3).
Figure 35: CLI - Connecting via Telnet
When the command prompt screen appears, login using the following (factory default) :
Username: admin
Password: admin
The base station may now be controlled using a set of CLI commands.
Telnet Logout
Exit from a CLI session by typing:
logout ENTER
The system will logout users automatically if no commands are received (idle) for five
minutes.
5.2 CLI Commands
The system defaults to root mode when you login to the base station. The following table
lists all base station specific commands available in root mode. All commands are casesensitive.
The following table lists commands available in the root directory. These commands are
described in detail in the following sections.
Command Description
debug* Intermediate node for debugging commands
defaultSF* Temporarily enable or disable default uplink service flows
diagStatistics* Access the Diagnostic Status data structure
interfaces View and configure the data and management Ethernet ports
ipAddress View and configure the IP address data structure
logout Exit from Command Line Interface
monitor Enter monitor mode (press any key to exit monitor mode)
reboot Reboot the device box.
remoteFSInit* Initialize remote File System
resetSS* Reboot the base station
set Command mode to view and configure system settings
show Command mode to view system settings
softwareConf Backup/restore base station settings to/from FTP server
softwareUpgrade Download software and select the active version
user View and configure user accounts
vxShell* Switch to VxWorks target shell
wmanIfBs View and configure wireless MAN interface objects
wmget* Set WindMark, with instance/argument support
wmlist* Set WindMark, with instance/argument support
wmnext* Set WindMark, with instance/argument support
wmset* Set WindMark, with instance/argument support
x509 WMAN-IF-MIB X509 certificate data
*Debug user only.
5.2.1 Common Controls
Use the following CLI control commands in all configuration modes.
Table 22: CLI - Root Mode Commands
Command Description
?
CTRL-Z Return to root mode.
logout Terminate this telnet session. May be entered from any mode.
dump- Save the information to the specified FTP server.
<Server> - IP Address of the Server to dump data to
<File> - File Name of the dump data
mode- Show/change the current debug mode setting.
level - <normal(0) | monitoring(1) | debug(2)>
server - IP address of the default FTP server for automatically
debug info dump upon system errors.
reset- Reset the DEBUG data structure content.
rxmode - Set to continuous receive mode.
show - Display DEBUG data structure content.
FrameNumber - RO -- MAC statistics;
Stations - RO -- MAC statistics;
UlServiceFlows - RO -- MAC statistics;
DlServiceFlows - RO -- MAC statistics;
DlUsage - RO -- MAC statistics;
UlUsage - RO -- MAC statistics;
CrcErrors - Resetable -- MAC statistics;
SymErrors - Resetable -- MAC statistics;
DlSdus - Resetable -- MAC statistics;
UlSdus - Resetable -- MAC statistics;
DlMpdus - Resetable -- MAC statistics;
UlMpdus - Resetable -- MAC statistics;
DlSecMgm - Resetable -- MAC statistics;
UlSecMgm - Resetable -- MAC statistics;
DlDefaultSdus - Resetable -- MAC statistics;
UlDefaultSdus - Resetable -- MAC statistics;
Fpc - Resetable -- MAC statistics;
Bwr - Resetable -- MAC statistics;
Pgb - Resetable -- MAC statistics;
Cinr - RO -- PHY statistics;
Rssi - RO -- PHY statistics;
Fofs - RO -- PHY statistics;
Corb - RO -- PHY statistics;
mac - Display MAC subgroup statistics.
phy - Display MAC subgroup statistics.
monitor - Enter into monitor mode, press any key to exit.
txmode - Set to continuous transmit mode.
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5.2.3 interfaces
The interfaces command is used to view and configure the front panel Data and
Management (Mgmt) Ethernet ports.
Table 24: CLI - Interfaces Command
Interface
ethernet
IntSep
DataDuplex
MgmDuplex
Intra-
default
management
LocalIp
LocalMask
DefGateway
DhcpEnable
ToDIP
Command
SectorL2Forwar
Parameter/Description
Ethernet port settings.
Select integrated or separated management mode.
0: The Data Ethernet port is used for data and local
management traffic. The Mgt Ethernet port is
disabled.
1: Only the Mgt Ethernet port is monitored for local
management traffic. Select this mode only when data
and management networks are physically isolated.
Data Ethernet port settings.
0: Auto-detect speed and duplex.
1: Operate at 10Base-T half duplex mode only.
2: Operate at 10Base-T full duplex mode only.
3: Operate at 100Base-T half duplex mode only.
4: Operate at 100Base-T full duplex mode only.
Management Ethernet port settings.
0: Auto-detect speed and duplex.
1: Operate at 10Base-T half duplex mode only.
2: Operate at 10Base-T full duplex mode only.
3: Operate at 100Base-T half duplex mode only.
4: Operate at 100Base-T full duplex mode only.
Establish a virtual private network at layer 2 between any
number of subscriber CPEs in single sector.
0: Disabled - base station will not accept traffic
resubmitted to the Ethernet port
1: Internal - base station creates a service flow to
provide transparent tunneling for higher-layer
protocols
2: External - base station allows an external switch to
forward VLAN traffic back through the (originating)
base station Ethernet port and over the wireless.
Restore all settings to factory default values.
Management configuration settings.
Enter the static base station network IP address.
Enter the base station subnet address mask.
Enter the IP address of the default gateway on the local
Ethernet segment.
:
0: Manually enter the following IP parameters
1: Have the base station obtain its IP address from a
DHCP server.
Enter the IP address of an the SNTP server.
The ipAddress command is used to view and configure the base station IP address
parameters.
Command Parameter/Description
set
show
Modify the base station network IP settings.
Address: <IP Address> Enter new IP address.
XXX.XXX.XXX.XXX
Mask: <IP Mask> Enter new Netmask value.
XXX.XXX.XXX.XXX
Dhcp: Enable or disable DHCP support.
0: - Static address
1: - DHCP allocated address.
Gateway < Default gateway> Enter new gateway address. Requires
The softwareConf command is used to load new software binary files on the base station.
See section 4.5.2: Software Upgrade on page 70.
Table 30: CLI - Software Upgrade Command
Command Parameter/Description
backup
restore
Save a backup copy of the base station settings on a remote FTP server.
Server: IP Address of the FTP server.
File: Use this name when saving the configuration backup file.
Which: Specify the settings to be saved:
0 - Alternate configuration.
1 - Active configuration.
For example:
backup 192.168.20.100 BS_024-061108.cfg 1 <ENTER>
You will be prompted by the FTP server to enter a valid username and
password.
Restore the base station settings using a backup copy previously saved on a
remote FTP server.
Server: IP Address of the FTP server.
File: Use this name when saving the configuration backup file.
Which: Specify the settings to be saved:
0 - Alternate configuration.
1 - Active configuration.
For example:
restore 192.168.20.100 BS_024-061108.cfg 1 <ENTER>
You will be prompted by the FTP server to enter a valid username and
password.
5.2.10 softwareUpgrade
The softwareUpgrade command is used to load new software binary files on the base
station. See section 4.5.2: Software Upgrade on page 70.
add add an instance to the wmanIfBsClassifierRuleTable
delete remove an instance from the wmanIfBsClassifierRuleTable
show display one or all instances in the wmanIfBsClassifierRuleTable
View or modify the wmanIfBsSsProvisionedForSfTable.
add add an instance to the wmanIfBsSsProvisionedForSfTable
delete remove an instance from the wmanIfBsSsProvisionedForSfTable
show display one/all entries in the wmanIfBsSsProvisionedForSfTable
Save into non-volatile memory any changes to the SF configuration setting.
View or modify the wmanIfBsServiceClassTable.
add add an instance to the wmanIfBsServiceClassTable
delete remove an instance from the wmanIfBsServiceClassTable
show display one or all instances in the wmanIfBsServiceClassTable
View or modify the wmanIfBsProvisionedSfTable.
add add an instance to the wmanIfBsProvisionedSfTable
delete remove an instance from the wmanIfBsProvisionedSfTable
show display one or all instances in the wmanIfBsProvisionedSfTable
View or modify the subscriber information.
addAdd an entry of Subscriber Station info.
delete Remove Subscriber Station info entries.
edit Modify an existing entry of Subscriber Station info.
show Display Subscriber Station info entries.
5.2.13 x509
The x509 command is used to manage the privacy sublayer certificates.
Table 34: CLI - x509 Command
Command Parameter/Description
x509
add Download new certificates into the device. (FTP setup required)
<Server> IP Address of the Server to download certificates from
<File> Certificate file name. (i.e. *.cer or *.pem)
delete Delete one of or all the certificates from the device non-volatile memory.
<Index> To remove the certificate item specified by Index, -1 for
removing all.
All To remove all the certificates (Index must be specified as -1).
Yes Confirmation to proceed
show Display a list of certificates stored in non-volatile memory.
The base station automatically creates one default uplink and downlink service flow for
each registered subscriber. The default service flows pass initial traffic (i.e., DHCP
Discovery or PPPoE Initiation) from hosts connected to subscriber. The default service
flows have the lowest QoS settings and the associated classifiers have the lowest priority.
The sector-wide bandwidth is limited to 64 Kbps downlink and 8 Kbps uplink. Traffic
statistics are reported aggregate with all other service flows. The default service flows
and classifiers must be included when calculating the total service flows and classifiers
for a sector.
6.1.2 Pass-All Classifier
The 802.3 classifier can be configured to allow unfiltered Ethernet traffic in the direction
of the associated service flow.. Configure a classifier to 'pass-all' by setting the MAC
address to zero. For example,
SrcMacAddr: 00:00:00:00:00:00.
DestMacAddr: 00:00:00:00:00:00.
Note: Only one subscriber in a sector may have a downlink service flow classifier
configured as 'pass-all'. All uplink traffic is subject to filtering by Automatic UL filtering
and the host Learning feature (if enabled).
6.1.3 Automatic UL Filtering
The Automatic Uplink filter implemented at the subscriber emulates bridge functionality
to prevent local traffic from being transmitted upstream over the wireless interface.
6.1.4 Host Learning
The MAC learning feature allows the base station to automatically learn the MAC
addresses of up to sixteen hosts (devices) on the Ethernet segment connected to a
subscriber. The learning feature can be enabled individually for any subscriber and the
number of learned hosts can be adjusted dynamically.
The subscriber learns MAC addresses on a first-come basis. The subscriber does not age
the learned MAC addresses -- table is re-learned only when the subscriber is rebooted.
Note: Enabling host learning affects the function of downlink 802.3 classifiers (see
Generic 802.3 DL Classifiers following). No other classifiers are affected.
When host learning is enabled, 802.3 classifiers created for downlink service flows will
be 'generic' type. The generic type 802.3 classifier allows all downlink Ethernet traffic
addressed to any of the learned hosts on the associated subscriber. Only the priority may
be adjusted on generic 802.3 classifiers.
6.1.6 DHCP Option 82
The DHCP option 82 support can be used by equipment upstream of the RedMAX base
station to uniquely identify when customer equipment located behind a subscriber issues
a request for network access (DHCP request for an IP address). This information, used in
combination with other network notification messages, allows network operators to be
informed when customers activate self-install CPEs. Operations can then take manual or
automated actions to authorize and activate the services for this subscriber.
The format of Relay Agent Option 82 option is as follows:
Circuit ID: MAC address of base station.
Remote ID: MAC address of subscriber.
GiAddr: Management IP address of base station (if added by upstream
equipment).
Note: The subscriber CLI control 'dhcpRelayAgent' must be enabled prior to using the
Option 82 feature.
6.2 Privacy Layer -- Encryption
6.2.1 Overview
All RedMAX equipment is hardware enabled to support the privacy sub-layer as defined
in 802.16-2004. The process of modem authentication and message exchange for user
traffic encryption is described fully in the 802.16-2004. The Privacy Sub-layer can be
enabled on a individual subscribers. This release supports user traffic encryption through
the DES cryptographic suite only, with the Traffic Encryption Key secured to a 3DES
level. Encryption must be enabled separately for the AN-100U and each participating
subscriber.
Authentication and registration are part of the 802.16 MAC common part sublayer.
Authentication is based on the use of PKI technology-based X.509 digital certificates.
Each wireless subscriber access modem will contain one built-in certificate for itself and
another for its manufacturer. These certificates allow the customer modem to uniquely
authenticate itself with the base station. The base station can then verify that the customer
modem is authorized to receive service. If the database lookup succeeds, the base station
sends the customer modem an encrypted authorization key, using the customer modem’s
public key. This authorization key is used to encrypt and protect any transmissions that
follow.
The authentication process ensures the subscriber modem is an authentic device and not a
rogue that was brought into the wireless sector area. For authentication the devices use
X.509 digital certificates [IETF RFC 3280] together with RSA public-key encryption
algorithm. At the end of the authentication, process the device has a shared key with its
peer known as AK (Authentication Key). This Key is used to derive the TEK.
Management messages between AN-100U and subscriber modem are protected with a
HMAC digest that ensures the data was not altered over the air in any way. The
authenticity of the CA's signature, and whether the CA can be trusted, can be determined
by examining its certificate in turn. This chain must however end somewhere, and it does
so at the root certificate, so called as it is at the root of a tree structure. Root certificates
are implicitly trusted. Redline Root CA certificate is issued by Verisign. It can be uses to
validate the certificates of the subscriber modem and cannot be used to validate the
certificates supplied by another vendor.
Authentication Using Digital Certificates
The entire authentication process is performed inside the AN-100U and it does not
require external AAA servers (e.g. RADIUS, TACCACS, LDAP, etc). On AN-100U
there is a space of 64 Kbyte of memory reserved for X509 Root CA certificates. A root
certificate allows the validation of subscriber modem certificates.
Validation process implies a check of the certificates against the information stored on
the AN-100U. The result of this check is a truth value based on which the AN-100U will
allow the subscriber to join the network. There are two scenarios:
1. Base station can skip the validation of the certificates sent from subscriber and
performs only a basic test to ensure is properly encoded.
2. Base station checks the digital signature with the information stored on the board.
To switch between the two scenarios the operator modifies the field TrustAll under
"privacy" group.
6.2.2 Configuring Privacy
This section describes the CLI commands for Privacy sublayer functions. Settings for
privacy modules are defined under "privacy" group. The values set by the user are taken
into account only after a system reset, even though the values are stored into NVRAM
memory immediately. The privacy module on the AN-100U always running, while the
subscriber modem can be enabled or disabled.
X509 Root CA Certificates
Each subscriber modem shipped from the factory comes with two X509 certificates subscriber modem certificate and CA certificate. The subscriber modem certificate is
unique per subscriber modem sends the certificates to the AN-100U during network entry
procedure in order to authenticate itself. The AN-100U verifies the certificates are valid
and allows or denies the subscriber request to join the network.
Privacy Sublayer Settings
This section is AN-100U specific and describes CLI support to manipulate X509
certificates. The commands are available under "x509" group.
add Download new certificates into the device. (FTP setup required)
delete Delete one of or all the certificates from the device non volatile memory.
show Display a list of certificates stored in non-volatile memory.
An FTP server is required to upload Redline Root CA certificates to an AN-100U.
If required, use the 'delete' command to initialize the certificate storage before loading a
new certificate. For example:
AN-100U(x509 ->)#> delete -1 All
Are you sure to remove ALL the X509 certificates stored in non-volatile memory?
(press 'Y' to confirm)
After the certificate is loaded on the board, verify the display the issuer, subject and
validity info. For example:
AN-100U(x509 ->)#> show
Index #0:
Subject: C = CA, O = Redline Communications Inc, CN = Redline Communications Inc
Root CA
Issuer : C = CA, O = Redline Communications Inc, CN = Redline Communications Inc
Root CA
Validity
Not Before: Dec 2 00:00:00 2005 GMT
Not After : Dec 1 23:59:59 2035 GMT
AN-100U Privacy Settings
The AK lifetime specifies the period the subscriber is authenticated with the AN-100U,
and TEK specifies the period the traffic key is valid. Changes to these parameters require
a reboot. The two keys are replaced at regular time intervals as specified by their
corresponding lifetimes. The operator can also specify to trust all subscriber certificates
or to validate each subscriber based on stored root certificates. There are two modes:
Operational Mode: The unit uses the default values defined in the standard while in test
mode the unit uses the values used to perform protocol testing.
Test Mode: Used only for testing the standard certification process.
Subscriber Modem Privacy Settings
The privacy settings (enable/disable) must match on the AN-100U and the subscriber
modem, otherwise the subscriber modem will never register.
To enable privacy module in SS follow these steps
SUO#> privacySS
SUO(privacySS ->)#> set Enabled 1
To disable privacy module in SS follow these steps
SUO#> privacySS
SUO(privacySS ->)#> set Enabled 0
6.3 Co-Channel Operation
Greater complexity in the modulation technique requires a greater (C/N) ratio to
maintain adequate throughput. In the presence of an interferer, the useful signal is
degraded. The ratio of 'useful signal' to 'interfering signal' is called the carrier-tointerference ratio. If the interferer signal power is additional noise power, and the overall
C/I+N ratio can be estimated as:
/NCIC
NCICCINR+−+=, where all variables are in decibels.
This formula corresponds with an expectation that a very strong signal (high C/N) is able
to withstand higher levels of interference (low C/I). If the signal is weak, even low
interference levels will significantly degrade the useful signal. Consider the following
examples:
Case 1: The threshold CINR for 64 QAM 3/4 is around 23.25 dB. If the C/N ratio is 24
dB, the system will operate at 64 QAM 3/4 (signal is close to the 64 QAM 3/4 threshold,
but still above it). If we introduce an interferer with a signal 30 dB weaker than the
system signal (i.e., C/I = 30 dB), the overall CINR will drop to around 23 dB, forcing the
system to change the modulation rate to 64 QAM 2/3.
Case 2: If the signal is very strong and the C/N ratio is around 28 dB, it will require a
much stronger interferer to force a drop in modulation. According to the formula above,
for a C/N of 28 dB, the C/I should be 25 dB in order to force a drop in modulation. In this
case the interferer was 5 dB stronger than the first case.
The following table lists experimentally obtained minimal C/I ratios required for the
system to not change modulation:
Table 35: Op. Notes - Co-channel C/I dB Measured Results
Modulation/Coding CINR threshold dB C/I: Case 1 dB C/I: Case 2 dB
In case 1 the signal is already very close the threshold rate (C/N is less than 1 dB above
the CINR threshold) and even weak interference can force the system to change to a
lower modulation. A moderately high C/I ratio is required for the modulation to remain
unchanged.
QPSK 1/2 6.75 19 9.4
In case 2 the signal is very strong (C/N is more than 10 dB above the CINR threshold)
and can experience more severe interference without being forced to change modulation.
The amount of interference required to force the system to go to the lower modulation
rate in these two extreme cases is very different, and in an actual deployment scenario a
full range of results are possible. Careful planning is necessary when frequency reuse is
required, and sufficient fade margin must be included to anticipate fluctuations of both
C/I and C/N.
6.4 Interference Issues
6.4.1 Multipath Interference
The base station is designed with high immunity to interference and multipath signals. Its
core technology is Orthogonal Frequency Division Multiplexing (OFDM), capable of
reliable performance under multi-path and frequency selective fading known to have
severe signal fading and distortion effects in the sub-11 GHz frequencies.
Multipath interference is a significant problem in long-range links, and in near line-ofsight, and non line-of-sight links. Multipath is a form of self-interference occurring when
signal reflections arrive slightly later than the primary signal. The result can be
destructive interference that can essentially null out the primary signal or overlap the
original signal such that it cannot be decoded. Multi-path interference is a problem with
long-range links where reflections off the ground, snow, and water frequently interfere
with the primary signal. It is also a problem in urban environments where the signal
reflects off buildings, trees, and roads.
OFDM breaks up the transmit signal into many smaller signals. For example, instead of
one single carrier carrying 70 Mbps of data (wireless interface rate), there are 192
separate carriers, each carrying about 364 Kbps of data (in the case of the Redline
product) in a 14 MHz bandwidth. If selective fading degrades one or two carriers, the
impact is minimal since the information is spread across the remaining carriers.
Figure 36: Op Notes: OFDM Multiple Carriers
One key aspect of OFDM implementation is that the individual carriers overlap
significantly to preserve overall bandwidth. Normally, overlapping signals would
interfere with each other, however, through special signal processing, the carriers in an
OFDM waveform are orthogonal to each other.
Multipath interference may cause individual narrowband channels to be altogether lost.
This problem is addressed in the Redline implementation in three ways:
1. Equalizing the received signal based on an estimate of the channel fading conditions
(restoring the faded sub-channels).
2. Interleaving the data before modulation onto the individual sub-channels (so that
adjacent data symbols do not necessarily end up on adjacent sub-channels, and thus
deep fades do not impair large chunks of the signal).
3. Convolutional encoding of the input data introduces correlations between signal
samples that are echoed on sub-channels occurring in separate parts of the spectrum.
This allows the receiver to infer the values of the signal that were transmitted on
fatally faded sub-carriers. The key advantage of multiple carriers is that the signal is
more robust to multipath disturbance, as described below.
OFDM equalization and coding techniques cannot overcome all forms of sharp,
multipath-related fading. For additional robustness, the OFDM implementation uses a
guard interval between each of the sub-channels. This guard interval is filled with
redundant data taken from the end of the same channel symbol and repeated at the
beginning of each channel symbol. Multipath echoes from each individual sub-channel
overlap the guard interval, rather than overlapping data in other symbols. Used in
conjunction with adaptive equalization, coding, and modulation, use of the guard interval
provides reliable operation in a wide class of non line-of-sight environments.
The WiMAX test for receive sensitivity modifies the methodology from 802.16 to allow
results to be obtained easier and faster. The standard Bit Error Rate (BER) of 1x10-6
remains the benchmark for these calculations. The BER is obtained by measuring Packet
Error Rate (PER), but PER cannot truly be measured (it is a limit) and requires that a test
be performed to estimate the PER value. Larger sample sizes will produce more accurate
values for PER. There is a practical limit to the size of the test sample, and WiMAX has
chosen the number of packets in the sample to enable result that will approximate a BER
lower than 1x10-6.
Sample Test for Subscriber Receive Sensitivity
1. Connect packet generator to the base station-to-subscriber link and then configure
packet generator to send 50,000 Ethernet packets with payload of 288 Bytes (i.e.,
total Ethernet packet size is 288 + 18 = 306 Bytes). Payload should not be chosen by
the packet generator, but must be filled with the pattern defined in the WiMAX
standard. The packets should be sent at a rate to fill at least 80% of the downlink
(DL) frame.
2. Count the number of packets received. If less than 97 packets are lost, it can be
stated with 95% confidence that the BER is 1x10-6 or lower.
3. Repeat the test by sending 20,000 Ethernet packets with payload of 864 Bytes. If less
than 118 packets are lost, it can be stated with 95% confidence that the BER is 1x106 or lower.
4. You repeat the test by sending 10,000 Ethernet packets with payload of 1488 Bytes.
If less than 100 packets are lost, it can be stated with 95% confidence that the BER is
1x10-6 or lower.
5. Receiver sensitivity is defined as the lowest RSSI value tested where samples for all
three packet sizes did not exceed the maximum number of lost packets. The 95%
confidence level indicates that if the test is repeated multiple times, you will obtain
passing results 95 times out of 100.
Refer to the following table for a summary of the test parameters.
Redline has introduced several techniques into its products to mitigate interference
issues:
1. OFDM: multiple carriers using both time and frequency diversity to provide high
tolerance to co-channel and adjacent channel interference, remove ISI due to
multipath and recover data from carriers falling in regions of deep channel fades.
2. Multiple channels (twenty-eight non-overlapping at 3.5 MHz) for diversity and
interference mitigation.
3. Adaptive modulation using six transmission rates to suit varying link conditions.
4. Adaptive encoding is heavily coded to substantially increase robustness. State of the
art FEC using Convolutional-coding gives the base station superior frequency
selective fading mitigation capability.
5. Narrow beam antennas with high side lobe and backlobe isolation and very low
VSWR.
6. Antenna cross-polarization enabling equipment co-location as well as effective
frequency planning.
7. High receiver dynamic range to address dynamic interference.
8. State of the art filtering at the RF, IF and baseband levels to reduce interference.
9. Choice of non-adaptive modulation to provide stable burst rate during periods of
rapid interference variations on the link.
The SMC has a higher priority than data in downlink, but the maximum rate is limited to
512 Kb/s in normal operation. During SMC maintenance intervals, the rate is unlimited to
allow faster FTP transfers over SMC. The SMC maintenance interval can be enabled by
the Redline Management Suite (RMS). In uplink the first 32 Kbps of the SMC traffic has
a higher priority than data, and the remaining SMC traffic has lower priority.
7.2 Time Synchronization
When operating two or more collocated base stations (BSs), transmitter operations
MUST use synchronization to minimize inter-sector interference. Refer to the RedMAX
Base Station Installation Guidelines for complete details.
7.3 Factory Default Settings
The table lists some important factory default settings for the base station terminal.
Figure 37: Diagnostics: Base Station Front Panel View
7.4.1 System LEDs
The front panel of the terminal includes a number of LEDs to monitor operation of the
system and assist troubleshooting. Refer to section 3: Physical Description on page 25.
7.4.2 Console Port
The front panel includes the Console port. Use the CLI commands to interrogate the base
station status and program most system settings.
7.4.3 System Reset Switch
Throughout this section, reference is made to the reset switch, which is a micro-switch
recessed in the front panel in the system block. Use a small narrow object, such as a
paper clip, to access the switch.
Depressing the reset switch for less than five seconds activates a short-reset. This is
equivalent to turning the terminal off and on. Statistical values are reset. The selected
system software image is loaded.
Depressing the front panel reset switch for more than five seconds activates a long-reset.
A long-reset reloads the factory defaults for the IP Address, IP subnet mask, and
password and then resets the system. Statistical values are reset. The selected system
software image is loaded.
7.5 Recovering a Lost IP address
Use a DB-9 serial cable to access the base station serial console. The configuration of the
serial port should be 57,600 bps, no parity, 8 data bits, 1 stop bit. Once connected, type in
the command ifShow and read the value of inet under the idt interface.
7.6 Detecting Channel Interference at Startup
Following a power-cycle or reboot, the base station monitors the RF Channel to detect
interference on the uplink channel. The transceiver is set to receive mode and the PHY is
programmed to receive a long preamble from a WiMAX base station. If no preamble is
detected during the one-second interval, the channel is considered free of interference
from other WiMAX equipment.
If a long preamble is received, the base station continues to monitors the channel for an
additional three seconds. If an 802.16d DL-Map is received, the following message will
be entered into the event log:
WARNING: RF Channel Conflict with [BS Id]
This message in the event log indicates that another base station has been detected using
the following RF-PHY characteristics:
- Same DL channel frequency as the UL channel frequency of this SC
- Same Cyclic Prefix
- Same channel size (i.e., 7 MHz)
If a long preamble was received, but no DL-Map was detected, the following message
will be entered into the event log:
WARNING: Unknown Interference was detected on the UL channel
This second message does not necessarily indicate interference from another base station,
and may be the result of cross-interference from subscribe stations.
7.7 Re-Ranging Log Message
The log message 're-ranging' is recorded by the base station when a registered subscriber
initiates a network entry sequence.
There are two common reasons for this event:
1. When network entry is complete, the subscriber retains its 'registered' state by
sending data traffic to the base station. When there is no data traffic, the SU-O sends
only periodic ranging requests each 25 seconds. Under no-traffic conditions, it may
take the base station more than 25 seconds to declare a subscriber unavailable and
mark it as de-registered. During the same 25 second period, the subscriber may
declare the base station to be unavailable (i.e., due to poor link conditions) and begin
attempts to re-register. In this scenario, the subscriber is attempting to re-register
before the base station has declared the subscriber to be failed.
2. This condition may also result from a loss of connectivity between a subscriber and
the DHCP server or TOD server. When remote management is enabled on the
subscriber (managedSS=1), the subscriber must communicate with the DHCP server
and the ToD server specified in the obtained lease. If communication cannot be
established within two minutes, the subscriber will reset and repeat the attempt.
7.8 Troubleshooting the Web Interface
These troubleshooting steps assume that the status LEDs on the front panel of the
terminal indicates normal function.
1. Open a Web browser and attempt to login to the base station terminal. If the terminal
does not respond by displaying the login dialog box, check that the correct IP address
is being used. The factory default address is listed in the Troubleshooting section.
The IP address may have been changed during installation. For correct operation the
host computer and the terminal must appear to be on the same subnet. Ensure that the
IP address for the PC is set to the same subnet as the terminal. For example, the IP
address should only differ in the last octet (i.e., 192.168.101.X).
2. The next test is to verify the IP address is reachable from the computer. Use the ping
command to test the connection between the terminal and host computer. The system
always responds to ping frames less that 577 bytes in length.
If the ping test is successful the host computer was able to send and receive packets.
The problem may be with the Internet browser or related settings on the host
computer. Re-boot the host computer to try to resolve the problem.
If the ping is not successful, the IP address may be incorrect, or a duplicate address
may exist.
3. If the current address of the terminal cannot be determined, it is recommended to
perform a long-reset. Performing a long-reset restores the terminal IP address and IP
Subnet Mask to the factory default values. Note that this operation may discard some
custom settings.
Table 38: Troubleshooting - Web Interface Diagnostics
Symptom Possible Problem Solution
Login
screen
cannot be
accessed.
Incorrect IP address
and/or Subnet Mask.
Problems with host
computer, or terminal.
Host PC ARP table is
incorrectly configured.
Perform a ping test from the host computer
command line. If the ping test is unsuccessful,
then the problem is with the IP address. Perform
a long-reset to restore the default address.
If the ping is successful, reboot of the base
station and/or host computer.
Run 'arp -d' whenever connecting to a different
base station terminal. Check that the subnet
mask for the host PC matches the subnet mask
of the terminal. Check that the host PC address
is in the same subnet.
7.9 Replacing the System Fuse
Important: Always completely remove power from the base station before performing
any maintenance on the terminal or modem.
Warning to service personnel:
Caution for all AC and DC models – Double Pole/Neutral fusing.
To replace fuse:
1. Disconnect power from the terminal.
2. Pry off the black plastic cover located on the back panel beside the power switch and
extract the red fuse holder.
3. Use an approved tool to remove the glass-cased fuses from the holder.
Be certain to replace the fuse(s) into the lower half of the holder, as shown in the
diagram below. The fuse holder holds two fuses, both of which are active. Be certain
to use fuses of the same type and rating.
4. Replace the fuse holder in the system terminal and secure.
Figure 38: Diagnostics: Base Station Power Supply Fuse Holder
Page 99 of 119
Page 100
RedMAX™ Base Station
User Manual
7.10 RF Troubleshooting
The terminal monitors the status of the outdoor modem unit and reports any fault
conditions in the system event log. The following table lists the general fault conditions
reported by the terminal.
Table 39: Troubleshooting - RF Error Diagnostics
Error Type Description
IF PLL Unlocked The PLL (Phase Locked Loop) section within the terminal
experienced an error. The System Fault LED may light. Try
resetting the unit.
Communication Error
Over IF Cable
Outdoor Unit
Temperature is too
High. Air Interface
Disabled for 15 Minutes
Outdoor Unit Power
Supply Error
Outdoor Unit 24V Error The DC voltage at the modem (carried by the IF cable from
Air Interface Disabled The radio is disabled.
Cable Compensation
Failed
Invalid Radio The attached radio is not compatible with this
Outdoor Unit 3.3V Error The modem internal power supply is lower than the required
Communication between the terminal and the modem failed.
Check the IF cable and connectors.
The internal temperature of the modem is above 82C
(180°F). The modem shuts down to allow cooling.
Displays a fault in the modem power supply. This error could
be due to a problem with the internal power supply or with
the power source from the terminal. If the 'Low DC Voltage
At Radio' error is also indicated, (see below) check the IF
cable and connectors. If the 'Low DC Voltage At Radio' error
is not indicated, the modem requires servicing.
the terminal) is lower than the required 24 VDC. Check the
IF cable and connectors. The minimum required voltage for
operation is 12 VDC.
The measured IF cable compensation is out of specification.
terminal/configuration.
3.3 VDC.
7.11 System Log Messages
Table 40: Troubleshooting - Event Log Messages
Log Message Description
Access Address : 0x%08x This message is displayed only after a watchdog reset
occurs. It provides information about the software
exception that caused the watchdog.
Air Interface is Disabled The RF interface has been disabled by the user.
Air Interface is Enabled The RF interface has been enabled by the user.
Another Upgrade operation