ADC TELECOMMUNICATIONS TECHNICAL MANUAL EXHIBIT III (PRELIMINARY) BTS-7010 WIRELESS MODEM TERMINATION SYSTEM (WMTS) REV: 0 102 Rahway Road McMurray, PA 15317 USA Phone 412-941-1500 FAX 412-941-9421
SYSTEM DESCRIPTION The Wireless Modem Termination System is a hub modem system that accepts full duplex 100BaseT Ethernet, arranges the incoming Ethernet data frames, multiplexes in TDM and modulates a downstream 64 QAM carrier. The 64 QAM IF output (44 MHz) signal/s is fed to the RF input/s of the Base Transceiver Station (BTS). This manual covers both Upstream and Downstream information, however only the downstream components apply to this Type Acceptance submittal.
V3000 Wireless Hub WIRELESS HUB RF CHARACTERISTICS IF Frequency Range 41 to 47 MHz 5 to 65 MHz RF Frequency Range Depends on ancillary equipment - MMDS, LMDS, 3.5 GHZ, 10.5 GHz, WCS, UHF and unlicensed RF Channel Bandwidth 3 MHz, 3.
V3000 Wireless Hub WIRELESS HUB RF CHARACTERISTICS IF Frequency Range 41 to 47 MHz 5 to 65 MHz RF Frequency Range Depends on ancillary equipment - MMDS, LMDS, 3.5 GHZ, 10.5 GHz, WCS, UHF and unlicensed RF Channel Bandwidth 3 MHz, 3.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction SECTION 1: INTRODUCTION Content Page 1 MANUAL CONTENTS ........................................................................................................................................1 2 SYSTEM OVERVIEW.........................................................................................................................................2 3 BASE STATION EQUIPMENT (NON-RF) .........................................................
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction 2 SYSTEM OVERVIEW The high-speed Axity Broadband Wireless Access System is designed to allow business, school, government and residential users to access private and public data networks over wireless channels. The system provides high-speed connectivity over wireless RF networks to and from a computer or LAN using packet-based, point-to-multipoint (PTMP) architecture.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction Optional automated backup is provided with the automatic backup system (ABS) selecting either the primary or backup transmitter if one should fail. In the case of multiple primary transmitters, priority backup may be enabled. Receiver backup is currently under development.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction Base Station Radio Tower Subscriber Site Antenna/ Transverter (Roof Mount) WMU RF Receiver RF Transmitter SCADA (optional) WMTS Computer Bandwidth Manager (optional) Router (optional) IP Network DHCP ToD TFTP Axity EMS Router Router Net Browser to EMS Figure 1-1. Axity System Architecture 3 BASE STATION EQUIPMENT (NON-RF) 3.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction The WMTS provides a full duplex 100BaseT Ethernet interface to the network IF. The WMTS arranges the incoming Ethernet data frames, multiplexes (in TDM) and modulate the downstream carrier. The WMTS also receives upstream information from the WMUs. It demodulates the upstream signal, multiplexes TDMA-based data and provides it to the network interface.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction Through the EMS, the network administrator can manage and monitor both the base station/hub devices and the WMUs located at the subscriber premise. The client/server architecture of the EMS provides the facilities to manage the system from various locations over the Internet.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction Ethernet Router or Hub RF Ethernet IF DC + IF WMU Power Inserter AC Transformer AC/DC Converter Transverter NIC Card Figure 1-3. CPE Configuration – Multiple User Page 1-7 2000, ADC Telecommunications, Inc.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction 5.1 WMU (Wireless Modem Unit) The WMU is a DOCSIS-based wireless modem with specific wireless enhancements for robustness. The system is connected to the subscriber equipment through a standard 10BaseT Ethernet network interface card (NIC) or a hub or other Ethernet device for multiple users. The WMU, which is installed adjacent to the computer, performs the data to IF signal modulation and demodulation.
ADCP-62-504 • Issue 1 • November 2000 • Section 1: Introduction To begin the ranging process, the WMU transmits a ranging request to the WMTS. Upon receipt, the WMTS sends a ranging response back to the WMU. Once initial ranging is completed, a similar ranging process occurs periodically to continuously adjust frequency, timing and power level. 5.3.4 IP Layer Establishment Once timing, frequency, and power are set, the WMU must establish IP connectivity.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description SECTION 2: WIRELESS MODEM TERMINATION SYSTEM DESCRIPTION Content Page 1 INTRODUCTION ................................................................................................................................................1 2 ARCHITECTURE................................................................................................................................................2 2.1 Wireless Hub (Base Station) Overview................
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 2 ARCHITECTURE The WMTS base station is typically located between the subscriber unit and the service provider (SP) or a WAN to provide high-speed connectivity over wireless networks. Per the DOCSIS specification, the WMTS supports up to 8129 subscriber units over the wireless network. The WMTS accepts IP data from the WAN via an Ethernet bus, which outputs data over the wireless network and vice versa.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Base Station Radio Tower Subscriber Site Antenna/ Transverter (Roof Mount) WMU RF Receiver RF Transmitter SCADA (optional) WMTS Computer Bandwidth Manager (optional) Axity EMS Router (optional) IP Network DHCP ToD TFTP Router Net Browser to EMS Router Figure 2-1. Axity System Overview Page 2-3 2000, ADC Telecommunications, Inc.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description The Wireless Modem Termination System uses a modular design that includes: • WMTS chassis with integrated backplane • Host cards (primary and backup) • Up to eight universal cards, which are configured for upstream, downstream or control/forwarding functions • One downstream card • Up to five upstream cards • Redundant AC power supplies • Two fan tray assemblies The WMTS is responsible for setting the upstream bandwidth to its subtending WMU modems.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description • Upstream card to demodulate the incoming IF from the RF upstream downconverter • Two power supplies (two active and one backup) To extend the system, more upstream and downstream modules can be inserted into the system. Each module consists of a universal card and an appropriate wireless application. The system can be extended by any combination of six RF modules in the eight slots.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description system, and supports several independent functions, such as the control and forward application, or downstream and upstream modem applications. The card is configured according to its location in the enclosure. When the downstream card is installed in the associated rear slot, it implements the downstream modem application. When the upstream card is installed in the associated rear slot, it implements the upstream modem application.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 2.3.6 Upstream Application The upstream application is loaded in the universal card, which is part of the upstream module. The application provides the proper RF input signal. 2.3.7 Controller and Forwarder Application The control application performs all monitor, control, system configuration, provisioning, and connection management tasks.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 1U WMTS Universal Universal Universal Universal Universal Universal Universal Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description WMTS Universal Universal Universal Universal Universal Universal Universal Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 4 ENCLOSURE, PANELS AND INDICATORS 4.1 Enclosure The WMTS is installed in a standard rack-mounted enclosure. The standard configuration consists of a single enclosure supporting eight slots at the front and seven slots at the rear. Two slots are reserved for the host card and the C&F card. The other six slots may be used for upstream and downstream universal cards.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Table 2-1. Universal Card Indicators LED COLOR Dot Matrix Red INDICATION Channel number corresponding to slot location “?” indicates a problem with the downstream or upstream card Power Green On when card is inserted and power is applied Off when card is not seated properly or problem exists with the power supply Cont.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Upstr Green Flashing when the upstream application is active 100M Lan OK Green Indicating network integrity of the Ethernet connection on the C&F universal card only Active Yellow Flashing when traffic is transferred over the Ethernet connection Hot Swap Red CONNECTOR/ SWITCH TYPE FUNCTION 100BaseT RJ45 Ethernet connection Com 1 D-type RS-232 link (future use) Com 2 D-type RS-232 link used for software download Hot Swap Push
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Universal Power Cnt. Fwd. Dwnstr Upstr 100M Lan OK Active 100-Base T Pow e Cnt r . Fw d. Dw n Ups str tr 100 M Lan Act OK ive 100 -Ba se T Com1-RS232 Com1-RS232 Com2-RS232 Com2-RS232 Hot Swap Un ive rsa l Hot Sw ap BWA01002-A Figure 2-6. Universal Card Panel Page 2-13 2000, ADC Telecommunications, Inc.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 4.2.2 Downstream Card Panel When the WMTS powers up, the channel numbers on the WMTS universal cards show as dot matrix question marks. As the unit performs a self-test, the system recognizes the cards and the correct channel number will appear in the dot matrix. LED lights on the downstream card will operate as noted below. If the system locks or malfunctions, the Tx Active LED may stay lit instead of flashing.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Downstream Analog Power TX Active Dow nst rea m An Poalog we r T Ac X tive IF Out IF Ou t Hot Swap Ho tS wa p BWA01000-A Figure 2-7. Downstream Card Panel 4.2.3 Upstream Card Panel When the WMTS powers up, the channel numbers on the WMTS universal cards show as dot matrix question marks. As the unit performs a self-test, the system recognizes the cards and the correct channel number will appear in the dot matrix.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Table 2-3.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Upstream Power RX Active Up str ea m Po we r R Ac X tive IF In IF Hot Swap In Ho tS wa p BWA01001-A Figure 2-8. Upstream Card Panel 4.3 Cards and Application Modules 4.3.1 Universal Card The universal card is the basic card in the WMTS. The universal card supports several independent functions, such as the control and forward (C&F) application, or downstream and upstream applications.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description connection. The C&F card is always located next to the host card. The card communicates with the other system assemblies via the internal CPCI bus. An internal system bus is used for on-card intra-board data transfer. This bus structure separates data flow and provides better bus performance and traffic throughput. 4.3.2 Downstream Card The downstream card, together with the universal card, is part of the downstream module.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 5 BASE STATION RF COMPONENTS Every headend or hub requires a transmitter or set of transmitters with the associated filters, power combiner, waveguide or cabling and antenna to send the WMTS modulated signals to the subscriber sites. Similarly, the headend requires an antenna, cabling, filtering, and a receiver/downconverter to process the RF upstream signal from the client sites for the WMTS demodulators. This is illustrated in Figure 2-9.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description 5.2 Upstream The upstream path starts with the signal being picked up by the antenna which is then passed to the low noise amplifier (LNA) via a coaxial cable or a waveguide and filtering system (which might include the power combiner). The signal is converted from the RF band to an IF signal in the upstream receiver/downconverter. The IF is then presented to the upstream card in the WMTS chassis.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description The modulation scheme and symbol rate, along with the bandwidth determine data throughput on a wireless channel as listed in Tables 2-4 (upstream) and 2-5 (downstream). Page 2-21 2000, ADC Telecommunications, Inc.
ADCP-XX-XXX • November 2000 • Section 2: WMTS Description Table 2-4. Data Throughput - Upstream UPSTREAM NOMINAL THROUGHPUT PER SUB-CHANNEL BITRATE (NOMINAL) CHANNEL WIDTH SYMBOL RATE 400 KHz 320 Ksym/sec 640 Kb/s 800 KHz 640 Ksym/sec 1280 Kb/s 1600 KHz 1280 Ksym/sec 2560 Kb/s QPSK (2 BITS PER SYMBOL) Table 2-5. Data Throughput - Downstream DOWNSTREAM 1 NOMINAL THROUGHPUT PER CHANNEL CHANNEL WIDTH MODULATION TYPE SYMBOL RATE BIT RATE 6 MHz QPSK 5.304 Msym/sec. 10.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description SECTION 3: WMTS FUNCTIONAL DESCRIPTION Content 1 2 3 4 5 6 Page INTRODUCTION ..................................................................... 2 1.1 Overview ................................................................... 2 1.2 Internet Access ............................................................ 2 1.3 DOCSIS Compliance .......................................................... 2 IMPLEMENTATION ................
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 1 INTRODUCTION 1.1 Overview The WMTS is an IP centric bridge for data over radio communication system. It is designed to allow IP access over wireless channels to business, government, schools, hospitals and residential users. The major applications are: Internet access, multi-media, video conferencing, distant learning and more.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 2 IMPLEMENTATION 2.1 Overview The downstream channel utilizes a 6MHz bandwidth, which is transmitted by an antenna through the power combiner and waveguide. The upstream channel can be split into several independent subchannels of different channel widths. The upstream channel may use directional antennas to reallocate sub-channels in different areas. 2.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 3 TRAFFIC STRUCTURE 3.1 Overview The traffic from the base station toward the WMU at the subscriber site is over a downstream channel and back over an upstream channel. This arrangement provides full duplex wireless communication. 3.2 Frame Conversion On the downstream, the WMTS encapsulates the IP frames into MPEG frames.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description fading, or multipath may be supported, albeit at a slower data rate. The MMDS/ITFS channels cover the RF range of 2500 to 2686 MHz. Each channel is 6 MHz wide (except G4). The downstream antenna is typically contoured toward customers physical residence location to support the customer base. If the customers surround the transmission site, the antenna would typically be an omni type.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description latency incurred by interleaving. Typical interleaving depth provides 95 microsecond burst protection at the cost of 4 milliseconds of latency. Four milliseconds of latency is insignificant when using standard Internet data services such as web browsing, e-mail and file transfer. However, in near realtime Constant Bit Rate (CBR) services, like IP telephony that have tight end-to-end latency, performance may be impacted.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description with a synchronization byte. Searching for this MPEG-2 sync byte, which repeats at both a fairly quick and regular interval, makes it easier to synchronize with the overall bit stream on the channel. Since the newly installed WMU searches several forward path channels for data, this feature helps the WMU to find the proper channel sooner. 4.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 5 UPSTREAM 5.1 Overview The return path information is transmitted from the WMU, in the network over the upstream channel toward the base station. An allocated time slot is assigned to each WMU to send the information. The WMTS converts the received information to digital data. 5.2 Return Channel The WMU modulator provides QPSK modulation at symbol rates and channel widths, as described in table 5.1. Table 5-1.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 5.3 Upstream Transmission The upstream return is directed to the receive antenna on the base station tower. This signal is picked up by the antenna and transferred down the tower via a low loss cable or waveguide. The lower the loss, the better the sensitivity and the further the client sites may be from the base station.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description 5.4 Return Path Modulation Format The upstream channels utilizes a combination of Frequency Domain Multiple Access (FDMA) and Time Division Multiple Access (TDMA). FDMA is provided by the ability to have multiple upstream channels simultaneously supporting multiple modems. TDMA is provided by using "slotting" on the upstream channels. Each upstream channel is divided into equal-time segments called "mini-slots".
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description a certain amount of data. As the WMTS receives requests from all the modems with data to transmit, it reserves mini-slots (essentially transmit opportunities) on the return path accordingly. Periodically (every few milliseconds), the WMTS sends a message to the WMUs (over the downstream path) indicating the specific mini-slots granted to each modem.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description reserved for modems just connected to the network, At the conclusion of obtaining upstream parameters, the modem has: * A rough time reference * The details of an upstream transmit channel * The details of the initial maintenance transmit opportunities for newly connected wireless modems on that upstream channel These three points are all used for the "'Ranging" process. 6.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description Ethernet protocol data units. This is then transmitted or received in each interaction prior to requiring its IP address in the network. During the first connection of the WMU to the network and the CPE, an entry is made in the address resolution table at the base station. This provides the relationship to the MAC address and the IP address.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description shifting the upstream frequency by 5kHz. In preparing the ranging response message, the WMTS notes: The time offset of when it receives the ranging request from the actual beginning of the initial maintenance transmit opportunity. The exact frequency of the transmission. The incoming transmission power level. Based on this data, the WMTS determines the corrections and send them back to the WMU in the ranging response message.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description use. After a period of inactivity this IP address is reclaimed and given to another active modem, thereby conserving IP address space. 6.7 Registration The registration process begins with the WMU downloading a configuration file. The IP address of the configuration file server and the name of the configuration file that the modem is required to download, is included in the DHCP response to the modem.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description WMTS registration is immediately followed by initialization of the Privacy security functions. Baseline Privacy initialization begins with the WMU sending the WMTS an authorization request, containing data identifying the WMU (e.g., MAC address), the unicast SIDs that have been configured to run Baseline Privacy. (The list would be empty if a cable modem was configured to only run Baseline Privacy on multicast SIDs.
ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description - State transitions (i. e. the lines between states) are labeled with < what causes the transition >/< messages and events triggered by the transition>. If there are multiple events or messages before the slash "/" separated by a comma, any of them can cause a transition. If there are multiple events or messages listed after the slash, all of the specified actions must accompany the transition. ADD DIAGRAM (5-4) 6.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation SECTION 4: WMTS INSTALLATION Content Page 1 INTRODUCTION ................................................................................................................................................2 2 INSTALLATION..................................................................................................................................................2 3 2.1 Installing the WMTS......................................................
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 1 INTRODUCTION The purpose of this document is to describe the specific procedures to install ADC’s Wireless Modem Termination System (WMTS). The WMTS utilizes the MDS/MMDS frequency spectrum to obtain two-way communication. The WMTS manages predefined frequencies through its upstream and downstream cards on the back of the unit.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 2U 1U WMTS Universal Universal Universal Universal Universal Universal Universal Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr. Power Cnt, Fwd. Dwnstr. Upstr.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 2.2 Connecting the Rear Panel 1. Connect the downstream RF cable to the F-type connector on the rear panel of the downstream card (modulator panel) as illustrated in Figure 4-2. 2. Connect the upstream RF cable to the F-type connector on the rear panel of the upstream card (demodulator panel) as illustrated in Figure 4-3. Downstream Analog Power Tx Active IF Out RF CONNECTOR Hot Swap 14195-B Figure 4- 2.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation Upstream Power Rx Active IF In RF CONNECTOR Hot Swap 14196-B Figure 4-3. Upstream Card Page 4-5 2000, ADC Telecommunications, Inc.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 2.3 Connecting the Front Panel Connect the switched hub Port 1 via 100BaseT cable to the RJ-45 connector on the front of the control and forwarder (C&F) card (see Figure 4-4). The card closest to the host card is the C&F card. Universal Power Cnt, Fwd. Dwnstr. Upstr. 100M Lan OK Active 100-BaseT 100-BaseT Com1-RS232 Com2-RS232 Hot Swap 14189-B Figure 4-4. WMTS Control and Forwarder Front Panel Connector 2.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 4. To insert a new card, push the card into the slot and verify that the card runs in the guides of the slides. Carefully push the card until it plugs into the mid-plane board connector. 5. Check that the newly inserted card aligns with the other cards already installed on the chassis. 6. To extract the fan tray, use the handles on the front of the tray. 7. Lock the card switch and fasten two screws (top and bottom). 2.
ADCP-XX-XXX • November 2000 • Section 4: WMTS Installation 3 INSTALLING AND CONNECTING THE OUTDOOR UNIT The wireless frequency band determines the type of the combiner and antenna. The WMTS operates in the 2750 band. 3.1 RF Connection 3.1.1 Downstream Connect the WMTS upstream card connector (F-type) to the upconverter IF In connector, through 10 dB attenuator. Note: The nominal output level of the downstream IF OUT signal is 43 dB, and the typical IF output level to the upconverter is 33 dMmV.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation SECTION 5: OPERATION Content Page 1 INTRODUCTION ................................................................................................................................................1 2 PRE-OPERATIONAL CHECKS..........................................................................................................................1 2.1 Procedures ...........................................................................................
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation • Extended level when the test also includes the wireless path of the system. The purpose of the first test is to check the integrity of the system, isolated from the wireless components. When the basic test is successful, the wireless components of the system are added to the test setup to test communication over the wireless channel. 2.1.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation VHF Upconverter Switched Hub Attenuator WMTS Diplexer Converter NMS Station and Servers Attenuator CPE WMU Figure 5-1. Basic Test Setup 2.2.2 Test Procedure Following the installation of the NMS and IP Servers, the test setup has to be completed and the WMTS and WMU configured. The switched hub has to be configured to 100BaseT. During configuration, all the system components have to be operational.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation Antenna Antenna Waveguide Waveguide Transverter Multiplexer Coaxial Cable Coaxial Cable Upconverter Receiver Coaxial Cable Coaxial Cable Coaxial Cable WMU WMTS 100BaseT 10Base T CPE Switched Hub NMS Station and IP Servers Figure 5-2. Extended Test Setup 2.3.2 Test Procedure Observe the LED indicators to verify that all system components are operating properly.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation 3 OPERATION 3.1 Operators Tasks The operator performs the following tasks: • Connecting WMTS to a power source • Handling and modifying the parameters of the WMTS and WMU devices • Managing subscribers (WMU users) • Monitoring system performance • Handling events and alarms • Downloading software updates • Troubleshooting the system at operators’ level The system administrator (supervisor) also manages the operators and modifies operators’ attributes.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation Table 5-1.The WMTS Parameters Selection Tree PARAMETER S MIB DOCSIS Proprietary 1ST SELECTION DESCRIPTION System Enter generic information of the WMTS Interface Table Table on supported interfaces. Each downstream channel, upstream channel, MAC layer interface and Ethernet layer have entries at this table.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation Table 5-2. The WMU Parameters Selection Tree PARAMETE RS 1ST LEVEL MIB-2 DOCSIS MIB TABLE HEADER DESCRIPTION System System Info Generic information about the WMU Interface IfEntry RF 2ND LEVEL Basic An entry of this table exists for an interface Upstream Upstream entry MAC Table MACEntry An entry containing objects describing attributes of each MAC entry, extending the information in ifEntry.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation 3.3 Managing Subscribers (Users) The operator has to: • Assign a WMU to a subscriber • Add subnet or device • Remove subnet or device • Download software to WMUs 3.3.1 Assign a WMU to a Subscriber Use User Profiles option in the Config menu to add, configure or delete a user. 3.3.2 Add Subnet or Device Use Map Object option in the Insert menu to insert subnet or device.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation 3.5.1 Events The events are displayed in the Event Log Tool. Each event is related to an object or a device. The event log is colored according to the severity of the event. Six event priorities are defined: 1. Critical - Red 2. Major - Yellow 3. Minor - Magenta 4. Warning - Blue 5. Normal - Green 6. Info - White Apply the Event Action Filter selection tab to determine what happens when an event is received.
ADCP-XX-XXX • November 2000 • Section 5: WMTS Operation 3.7.1 Access Limits Each operator can have different access permission, as listed in Table 5-3. Table 5-3. Access Limits ACCESS LEVEL CAPABILITIES Supervisor Full access to all SNMPc NT capabilities. The administrator always has this access level. You must have supervisor permission to modify any operators attributes. Operator Read-only access to database files. No access to privileged information (e.g., set community names, user information).
