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15

Chapter 3

AT-3624TS Connectivity

The CentreCOM AT-3624TS is a multiport repeater designed to offer
maximum flexibility for both workgroup and department needs.
Specifically, the AT-3624TS uses two 50-pin Telco connectors. In addition,
you can connect an AT-ADAPT-2, or an octopus cable, to the AT-3624TS,
enabling you to use RJ45 connectors.

Note

This manual refers to two or more chassis-mounted repeaters, at least one
of which is manageable, as a

department concentrator.

The term

hub

refers

to either a standalone repeater (i.e., a single manageable repeater) or a
department concentrator configuration.

The AT-3624TS repeater is based on an Application-Specific Integrated
Circuit (ASIC) developed by ATI for maximum functionality and
reliability. Figure 10 shows the front and back panels of the AT-3624TS
model repeater.

Figure 10: AT-3624TS Front

and Back Panels

13

15

17

19

21

23

Port activity LEDs

AUI port

Interrepeater bus port

Front

Back

Telco connectors

Hub status
LEDs

«
...
24
25
26
27
28
...
»

Содержание CentreCOM AT-3624TRS

Страница 1: ...CentreCOM 3600 Series Hub Repeaters AT 3624TS AT 3624TRS Installation Manual ...

Страница 2: ... including but not limited to lost profits arising out of or related to this manual or the information contained herein even if ATI has been advised of known or should have known the possibility of such damages Trademarks Ethernet is a registered trademark of Xerox Corporation UNIX is a registered trademark of UNIX System Laboratories Novell and NetWare are registered trademarks of Novell Inc Micr...

Страница 3: ...nd use MOUNTING INSTRUCTIONS CAUTION These models are designed for operation in the HORIZONTAL position VERTICAL MOUNTING must not be done without the use of an Allied Telesyn vertical mount chassis designed for this purpose CAUTION Air vents must not be blocked and must have free access to the room ambient air for cooling CAUTION DO NOT detach rubber feet from the product unless an Allied Telesyn...

Страница 4: ...mifüße NICHT ENTFERNEN außer bei Gebrauch des Allied Telesyn Vertikalmontagegestells BETRIEBSTEMPERATUR Dieses Produkt wurde für den Betrieb in einer Umgebungstemperatur von nicht mehr als 40 C entworfen ALLE LÄNDER Installation muß örtlichen und nationalen elektrischen Vorschriften entsprechen Radiofrekvens forstyrrelsesemission EN55022 Klasse A ADVARSEL I et hjemligt miljø kunne dette produkt fo...

Страница 5: ...mt onder gevaarlijke spanning stellen ELEKTRISCHE SNOEREN Gebruik een elektrisch snoer maximum 4 5 meter lang berekend voor ten minste 6 ampère 250 V uit HAR vervaardigd met aan het ene uiteinde een gevormde IEC 320 stekker en aan het andere uiteinde een stekker die goedgekeurd is door het land waar het toestel zal worden gebruikt MONTAGE INSTRUCTIES WAARSCHUWING Deze modellen zijn ontworpen om te...

Страница 6: ...ÄHKÖISKUN älä poista kantta Sisällä ei ole käyttäjän huollettavissa olevia osia Tämä laite sisältää VAARALLISIA JÄNNITTEITÄ ja sen voi avata vain koulutettu ja pätevä teknikko Välttääksesi SÄHKÖISKUN mahdollisuuden katkaise sähkövirta tuotteeseen ennen kuin liität tai irrotat paikallisverkon LAN kaapelit SALAMANISKUVAARA HENGENVAARA ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIK...

Страница 7: ...igradi TUTTI I PAESI installare il prodotto in conformità alle vigenti normative elettriche nazionali RFI stråling EN55022 Klasse A ADVARSEL Hvis dette produktet benyttes til privat bruk kan produktet forårsake radioforstyrrelse Hvis dette skjer må brukeren ta de nødvendige forholdsregler Immunitet EN50082 1 Elektrisk sikkerhet EN60950 UL1950 CSA 950 SIKKERHET ELEKTRISKE MEDDELELSE ADVARSEL FARE F...

Страница 8: ... funcionar na posição HORIZONTAL NÃO DEVE SER EFETUADA INSTALAÇÃO VERTICAL sem o uso de um chassis de montagem vertical Allied Telesyn projetado para este fim específico CUIDADO As entradas de ar não devem ser bloqueadas e devem ter acesso livre ao ar ambiente para arrefecimento adequado do aparelho CUIDADO NÃO RETIRE os calços de borracha do produto a menos que esteja sendo usado um chassis de mo...

Страница 9: ...utbildad kvalificerad tekniker För att undvika ELEKTRISK STÖT koppla ifrån produktens strömanslutning innan LAN kablarna ansluts eller kopplas ur FARA FÖR BLIXTNEDSLAG FARA ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER VARNING NÄTKABELN ANVÄNDS SOM STRÖMBRYTARE FÖR ATT KOPPLA FRÅN STRÖMMEN dra ur nätkabeln INSTALLATION ELEKTRISKT AUTOMATISK SPÄNNINGSJUSTERING Denna produkt justeras automat...

Страница 10: ...nfigurations 3 Controllers 4 Connectivity 4 Chassis Arrangements 5 Further Information 6 Chapter 2 Hardware Installation 7 Site Preparation 7 Location 7 Ventilation 7 Power 7 Installing Hubs 8 Port Configurations 11 Network Ports 11 AUI Port 11 Station Ports 12 Back Panel Features 12 LED Displays 12 Hub Status Indicators 13 Port Status Indicators 13 ...

Страница 11: ... Connectivity 29 Features 30 Configurations 30 Controllers 31 AT 3624TRS Port Configurations 31 Network Port 31 Station Ports 32 UTP Hub to MAU Wiring 32 LED Displays 32 32 Hub Indicators 32 Port Indicators 33 Back Panel Features 34 Sample Installations of the AT 3624TRS Module 34 Chapter 5 Troubleshooting 39 Appendix A Data Cabling Techniques 41 10BASE T 41 UTP Wiring Specifications 41 10BASE T P...

Страница 12: ...50 Pin Telco Receptacle RJ21 18 Figure 13 Harmonica Adapter for AT 3624TS 19 Figure 14 AT 3624TS Repeater Port LEDs 23 Figure 15 AT 3624TRS Front and Back Panels 29 Figure 16 AUI Network Port 31 Figure 17 AT 3624TRS Port LEDs 33 Figure 18 10BASE T UTP Cabling Hub to MAU Straight Through 42 Figure 19 Pin 1 Orientation on an RJ45 Connector 43 Figure 20 10BASE T UTP Cabling Hub to Hub or MAU to MAU C...

Страница 13: ...T 3624TS and AT 3624TRS are multiple port hubs designed to offer maximum flexibility for both workgroup and department needs These hubs can operate as non managed hubs or are manageable in an ATI department concentrator chassis Note This manual refers to two or more chassis mounted hubs at least one of which is manageable as a department concentrator The term hub refers to either a standalone hub ...

Страница 14: ...Protocol SNMP the second version of the Management Information Base MIB II and Hub MIB For the Slave hubs to be manageable another hub must perform as a Master in the chassis Hubs in the AT 3600 Series that can function as a Master are the AT 3606F the AT 3606F SMA the AT 3606F SM the AT 3606F SC the AT 3606F ST the AT 3608 the AT 3612T the AT 3612TR the AT 3624T and the AT 3624TR Figure 1 AT 3624...

Страница 15: ...AT 3624TRS 24 10BASE T ports using two 50 pin Telco connectors front panel on the AT 3624TS One Attachment Unit Interface AUI port back panel One backplane connector containing an interrepeater bus An internal universal power supply Advanced IEEE 802 3 Ethernet hub functionality Diagnostic light emitting diode LED support Capability to connect to a network backbone through a transceiver Configurat...

Страница 16: ...he AUI network ports on the seven Slaves in an eight slot department concentrator cannot be used because they reside on the back panel of the hub and are therefore blocked by the backplane You can expand the number of ports by stacking multiple AT 3624TS and AT 3624TRS hubs through the backplane connector making a single logical hub Controllers Both the AT 3624TS and AT 3624TRS hubs use an ATI pro...

Страница 17: ...R 10 12 9 11 Link Receiving Indicator ON Indicator FLASHING COLLISION ACTIVITY STATUS 6 8 5 7 2 4 1 3 APPLIQUÉ PORT 8 ON LINE RECEIVE OFF ON TERMINATOR 1 2 3 4 5 6 7 ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINATOR ON LINE RECEIVE OFF ON TERMINA...

Страница 18: ...emaining slots are occupied by AT 3624TRS modules acting as managed Slaves Note Not all slots have to be populated and populated slots do not have to be contiguous The Master is the top most module Any Slave above the Master will not be managed Further Information For further information on Omega and AT S4 capabilities and installation see CentreCOM 3600 Series and AT S4 Firmware Module Network Op...

Страница 19: ... in an ATI chassis Ventilation The site must have adequate ventilation to provide an operating environment consistent with the AT 3624TS and AT 3624TRS specifications The ventilation openings located on the sides of the chassis should never be blocked These hubs have internal fans to aid in cooling Attention Maximum ambient temperature is 40o C with a department concentrator chassis Power Power co...

Страница 20: ...nsferring data the Receive and Activity indicators will illuminate The AT 3624TS or AT 3624TRS is now ready to serve as a non managed hub Installing a slave module in a four or eight slot managed hub configuration Attention Improper installation of the chassis can expose personnel to high voltages risking the possibility of injury or death Attention Improper installation in a chassis may expose th...

Страница 21: ...y shipped AT 3600 Series module before installing it in a multi module chassis See Figure 6 4 Reinstall the screws after removing the rubber feet to prevent the module casing from expanding and warping Figure 5 Removing the Interrepeater Bus Dust Cover Figure 6 Removing Rubber Feet from Module INTERREPEATER BUS FIRMWARE CASSETTE STATUS POW ER MASTE R FAU LT INTERREPEATER BUS FIRMWARE CASSETTE STAT...

Страница 22: ... firmly in the chassis backplane Attention When using the hot swapping method to insert or remove hub modules you must be sure that the power cord on each unit is plugged in To enable hot swapping you must disconnect the module from the backplane before you unplug the power cord 13 Attach the module to the chassis using the screws provided with the chassis 14 Connect your data cables to the hub an...

Страница 23: ... or update the network management software in a hub module refer to the CentreCOM 3600 Series and AT S4 Firmware Module Network Operations Guide Port Configurations Network Ports AT 3600 Series slave models feature a variety of port counts and support a variety of media including Fiber optic FOIRL 10BASE FL using ST connectors Fiber optic FOIRL 10BASE FL using SMA connectors Thinnet 10BASE2 using ...

Страница 24: ...is manual provide more detailed information about each model s station ports Back Panel Features The AT 3624TS and AT 3624TRS have the same back panel layout and features including Interrepeater bus connector that attaches the AT 3600 module to the backplane bus in a concentrator chassis Status indicators providing information on the hub as a whole for convenience these LEDs appear on both the fro...

Страница 25: ...ed on a Master only if the Master fails if the Backup detects a failure of the Master the Backup takes over the Master function ACTIVITY The Activity indicator will flash when Ethernet packets are being transmitted to all repeater ports Port Status Indicators The AT 3624TS and AT 3624TRS hub and port indicators on the hubs front panels provide visual diagnostic and activity information for network...

Страница 26: ...s mounted repeaters at least one of which is manageable as a department concentrator The term hub refers to either a standalone repeater i e a single manageable repeater or a department concentrator configuration The AT 3624TS repeater is based on an Application Specific Integrated Circuit ASIC developed by ATI for maximum functionality and reliability Figure 10 shows the front and back panels of ...

Страница 27: ...tor configurations ATI supplies desktop and rackmount department concentrator chassis that can hold up to eight AT 3600 Series Repeaters Since the department concentrator chassis connects repeater modules across a backplane a fully populated department concentrator behaves as a single repeater in the network topology This enables you to build and reconfigure networks easily efficiently and at mini...

Страница 28: ...de on the back panel of the repeater and are blocked by the backplane You can expand the number of ports by stacking multiple AT 3624TS repeaters through the backplane connector making a single logical repeater Controllers The AT 3624TS module uses an ATI proprietary multi port repeater controller to retime and regenerate signals and communicate with the network management software The port status...

Страница 29: ...l AT ADAPT 2 The harmonica style adapter for the AT 3624TS shown below allows direct conversion from the 50 pin Telco to RJ45 receptacles Since there are many different standards for the pin out of the harmonica adapter make sure that the pin out of the adapter you use complies with the 10BASE T wiring specification Refer to Table 5 for the pin out of the Telco connectors for the AT 3624TS repeate...

Страница 30: ...ch down block may be accomplished with a Telco connector to 25 pair UTP cable bundle Refer to Table 5 for the direct wiring pin out Adapter patch panels have a built in punch down block for maximum flexibility Patch panels allow for easy configuration and reconfiguration of house wiring requirements Figure 13 HarmonicaAdapter for AT 3624TS ...

Страница 31: ...XMT NEG 6 30 9 W0SL 3 RCV POS 1 5 10 SL W 3 RCV NEG 2 31 11 R BL 3 XMT POS 3 6 12 BL R 3 XMT NEG 6 32 13 R OR 4 RCV POS 1 7 14 OR R 4 RCV NEG 2 33 15 R GR 4 XMT POS 3 8 16 GR R 4 XMT NEG 6 34 17 R BR 5 RCV POS 1 9 18 BR R 5 RCV NEG 2 35 19 R SL 5 XMT POS 3 10 20 SL R 5 XMT NEG 6 36 21 BK BL 6 RCV POS 1 11 22 BL BK 6 RCV NEG 2 37 23 BK OR 6 XMT POS 3 12 24 OR BK 6 XMT NEG 6 38 25 BK GR 7 RCV POS 1 ...

Страница 32: ...6 46 41 V BL 11 RCV POS 1 21 42 BL V 11 RCV NEG 2 47 43 V OR 11 XMT POS 3 22 44 OR V 11 XMT NEG 6 48 45 V GR 12 RCV POS 1 23 46 GR V 12 RCV NEG 2 49 47 V BR 12 XMT POS 3 24 48 BR V 12 XMT NEG 6 50 49 V SL reserved 25 50 SL V reserved NOTE 1 Cable colors may be different from those represented here depending on the cable manufacturer Table 5 50 Pin Telco Pin Out for the AT 3624TS Repeater Continued...

Страница 33: ...N reset diagnostics are run remains solid red if a malfunction is detected during the diagnostics ACTIVITY The Activity indicator will flash when Ethernet packets are being transmitted to all repeater ports Port Indicators The AT 3624TS port indicators are located on the repeaters front panel They provide visual diagnostic and activity information for network analysis Each 10BASE T port supports t...

Страница 34: ... contains three separate procedures that detail sample installations of the AT 3624TS They are Installing the Slave standalone Installing the Slave in a non managed hub configuration in a two slot rackmount chassis Installing the Slave in a managed hub configuration in a four slot rackmount chassis Warning Improper installation of the chassis can expose personnel to high voltages risking the possi...

Страница 35: ... device Installing the AT 3624TS in a non managed hub configuration The following procedure details how to install a sample rackmount configuration in a non managed hub configuration This example is based on the following assumptions You are working with a two slot rackmount chassis You will populate both slots in the chassis You will be working with two Slaves NO Master or Backup 1 Remove the int...

Страница 36: ... each connected port on the Slave module If one or more of the ports are in use on the Slave module the Activity indicator will illuminate Your AT 3624TS repeater is now active in the chassis serving as a non managed hub Installing the AT 3624TS in a managed hub configuration The following procedure details how to install an AT 3624TS in a managed hub configuration in a rackmount chassis This exam...

Страница 37: ... the backplane Note When inserting or removing hub modules the power cord should remain plugged in using the hot swapping method To use the hot swapping method the module must be disconnected from the backplane before the power cord is unplugged If a fault occurs Fault light stays ON disengage the repeater module from the backplane unplug and replug the power cord and re seat the module 12 Check t...

Страница 38: ...plate air dam assemblies in place Also see Chapter 2 Hardware Installation on page 7 1 Attach a blank faceplate air dam assembly to the empty slot 2 Align the faceplate air dam assembly 3 Slide the assembly along the chassis guides until the notch on the end of the faceplate air dam assembly connects into the slot at the back of the chassis 4 Screw the faceplate airdam asembly in place on each end...

Страница 39: ...concentrator chassis Attention This manual refers to two or more chassis mounted hubs at least one of which is manageable as a department concentrator The term hub refers to either a standalone hub i e a single manageable repeater or a department concentrator configuration The AT 3624TRS is based on an Application Specific Integrated Circuit ASIC ATI developed for maximum functionality and reliabi...

Страница 40: ... 3600 Series hub is a single building block for both standalone hub and chassis department concentrator configurations ATI supplies desktop and rackmount department concentrator chassis that can hold up to eight AT 3600 Series hubs Since the department concentrator chassis connects hub modules across a backplane a fully populated department concentrator behaves as a single hub in the network topol...

Страница 41: ...back panel of the hub and are blocked by the backplane You can expand the number of ports by stacking multiple AT 3624TRS hubs through the backplane connector making a single logical hub Controllers The AT 3624TRS repeater uses an ATI proprietary multiple port repeater controller to retime and regenerate signals and communicate with the network management software The port status for each of the p...

Страница 42: ... page 41 LED Displays The LEDs intentionally do not reflect real time activity on the AT 3624TRS because a data packet is too fast for the human eye to distinguish on the LED indicator therefore the hub artificially stretches the LED ON time for observation Hub Indicators Hub LED indicators for the AT 3624TRS repeater are described below POWER Green whenever power is applied FAULT OFF under normal...

Страница 43: ...this LED will not illuminate This may occur if the workstation at the end of the segment is turned OFF or if the UTP segment is disrupted or damaged SELF TEST Sequential Flashing Green This indicates the repeater is conducting a power ON self test The test continues until one port is connected valid link Figure 17 shows the port LEDs for the AT 3624TRS Figure 17 AT 3624TRS Port LEDs 10BASE T NETWO...

Страница 44: ...the possibility of injury or death Caution Improper installation can expose the module to debris and block vents causing damage due to insufficient cooling Installing the AT 3624TRS as a standalone device The following procedure details how to install an AT 3624TRS in a standalone configuration 1 Plug one end of the power cord into the repeater and the other end into your power outlet 2 Check to s...

Страница 45: ...t handle assemblies to each side of the Slave you are installing 5 Plug one end of the power cord into the Slave and the other end into your power outlet 6 Check to see that the Power indicators on the Slave illuminates 7 Check to see that the Slave performs a self test The Slave will temporarily illuminate all port LEDs in sequence beginning with port 1 and continuing with port 2 port 3 and so fo...

Страница 46: ...t cover on the back panel of the module before installing the unit in a rackmount chassis 2 Remove the rubber feet from the Slaves 3 Reinstall the screws once the rubber feet are off Attention After removing the rubber feet it is important to reinstall the screws or the module will expand Also see Chapter 2 Hardware Installation on page 7 4 Attach the chassis guide handle assembly with the screws ...

Страница 47: ... to the rackmount chassis with standard rackmount screws not provided 14 Plug in your data cables to the hub and the network 15 Check the Link indicators If one or more of the ports on the Slave module is transferring data the Activity indicator will illuminate 16 Make sure the empty slot slot four is covered with its blank faceplate air dam assembly Your AT 3624TRS repeater is now active in the c...

Страница 48: ... exceed 100 meters 328 ft The wiring should be routed away from devices known to emit electromagnetic interference such as fluorescent lights photocopiers power transformers and relay equipment 5 If the Link indicator illuminates on a 10BASE T segment but data transfer is slow collision prone or non existent verify that your UTP cable is of Level 3 4 or 5 Level 1 and 2 voice quality cable will not...

Страница 49: ...ilable These can appear to be similar externally although their high speed data transmission characteristics are radically different The identification problem is exaggerated because some suppliers have sold data quality cables manufactured with voice quality cabling If any voice quality cabling is used in a 10BASE T network system data movement is slow collision prone or non existent To confuse t...

Страница 50: ...Level Cable Description AC Character Specification Twist Foot 10BASE T OK 1 Unshielded Untwisted N A CCITT None NO 2 Individual UTP 100 Ω 30 Ω RS232 1BASE5 AT T PDS None NO 3 Typical Individual UTP 100 Ω 15 Ω T1 AT T ISDN 10BASE T IBM Type 3 3 5 YES 4 Enhanced Individual STP 100 Ω 30 Ω EIA TIA 10BASE T NEMA 5 8 YES 5 Individual STP 100 Ω 30 Ω EIA TIA 10BASE T 8 10 YES IBM Type 1 Individual STP 150...

Страница 51: ...r cable as illustrated in Figure 20 In both the crossover and straight through instances the wire is twisted pair Figure 21 demonstrates usable and unusable cable wire pairings for the straight through configuration Figure 19 Pin 1 Orientation on an RJ45 Connector Pin 1 Figure 20 10BASE T UTP Cabling Hub to Hub or MAU to MAU Crossover 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 TD TD RD Not Used TD TD RD Not ...

Страница 52: ...e shown in Figure 22 pins 1 and 2 TD and TD are paired as are pins 3 and 6 RD and RD When pins 1 and 2 are crossed over they connect to pins 3 and 6 respectively and pins 3 and 6 when crossed over connect to pins 1 and 2 respectively Figure 21 Hub to MAU Wiring Usable Diagram A and Unusable Diagram B Not Used RD Not Used Not Used RD TD TD Not Used Not Used RD Not Used Not Used RD TD TD Not Used RJ...

Страница 53: ...in TD and vice versa 10BASE2 Thin Ethernet For 10BASE2 coax segment configurations IEEE 802 3 specifications allow 29 or fewer MAUs per cable segment spaced at no less than 0 5 meter 1 64 ft The 10BASE2 cable length can not exceed 185 meters 607 ft per 10BASE2 cable segment The worst case propagation delay for a 185 meters 607 ft thin Ethernet segment is 950 9 ns The propagation delay for 10BASE2 ...

Страница 54: ... watts or greater Earth grounding of the segment shield must take place at only one point on the cable AUI Drop Cables AUI or Drop cables can be no longer than 50 meters 164 ft each Attachments may be made only to the cable ends at the 15 pin D shell connector AUI cables may have a maximum 257 ns propagation delay as used for computing the worst case propagation delay of a cable system AUI cable p...

Страница 55: ...0 PIN TELCO RJ21 This connector is very common in 10BASE T wiring As opposed to the RJ45 connector the 50 pin Telco connector concentrates up to 12 UTP connections onto one connection This concentration of UTP ports is then broken out for connection to a punch down block inside a building s wiring closet 50 pin Telco connections provide a very clean uncluttered interface to the building s wiring A...

Страница 56: ...ial connectors and terminated at each end in its characteristic impedance COLLISION An unwanted condition that results from concurrent transmissions on the physical medium COLLISION PRESENCE A signal provided by the PLS to the PMA sublayer within the physical layer to indicate that multiple stations are contending for access to the transmission medium COMPATIBILITY INTERFACE The MDI coaxial cable ...

Страница 57: ...ire tester HUB REPEATER A hub is a central signal distributor It is used in a wiring topology consisting of several point to point segments originating from a central point The term hub is often used interchangeably with the term repeater Multiport 10BASE T 10BASE2 and fiber optic 10BASE FL FOIRL repeaters are considered hubs See Repeater HUB to HUB WIRING See MAU to MAU Wiring HUB to MAU WIRING U...

Страница 58: ...n block or between the RJ45 wall receptacle and the workstation MAU TRANSCEIVER An Ethernet transceiver is a MAU A 10BASE T MAU interfaces the UTP media to an AUI port on a workstation repeater bridge or other Ethernet devices MDI MDI X See Medium Dependent Interface MEDIUM ATTACHMENT UNIT MAU In a LAN a device used in a data station to couple the DTE to the transmission medium MEDIUM DEPENDENT IN...

Страница 59: ...to insert the UTP wire for data and voice applications REPEATER A device used to extend the length topology or interconnectivity of the physical medium beyond that imposed by a single segment up to the maximum allowable end to end trunk transmission line length Repeaters perform the basic actions of restoring signal amplitude waveform and timing applied to normal data and collision signals RJ45 Th...

Страница 60: ...P IP over Ethernet as the main inter computer networking technology TCP IP is also popular among PC users particularly as a means of communication with large multi user computers TELCO CONNECTOR A 50 pin receptacle that plugs into the front of the hub enabling cables from external devices to connect to the hub THICK ETHERNET See 10BASE5 THIN ETHERNET See 10BASE2 TRUNK CABLE The trunk coaxial cable...

Страница 61: ..._______________ Conditions List the steps that led up to the problem ___________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ _______...

Страница 62: ...____ Data Cabling Techniques _______ Reading the LEDs ______ Cabling _______ Configurations ______ I found the following the most valuable ______________________________ _________________________________________________________________ _________________________________________________________________ I would like the following more developed ___________________________ ____________________________...

Страница 63: ...4 717 0806 Salt Lake City UT Tel 801 350 9130 Fax 801 350 9051 Vienna VA Tel 703 506 0196 Fax 703 506 1986 Chicago IL Tel 708 406 8431 Fax 708 406 8462 Austin TX Tel 512 502 3087 Fax 512 794 9326 Dallas TX Tel 214 446 9873 Fax 214 446 8555 Reading MA Tel Fax 617 944 3492 Los Angeles CA Tel 310 412 8684 Fax 310 412 8685 Costa Mesa CA Tel 714 432 6424 Fax 714 432 6546 San Diego CA Tel 619 279 3896 F...

Страница 64: ...cable 48 crossover 32 39 43 44 48 data grade 39 data quality 41 FOIRL 11 45 49 house wiring 49 hub to hub 49 hub to MAU 49 impedance 46 47 49 MAU to MAU UTP hub to hub 50 silver satin 39 41 specifications 42 straight through 22 32 42 43 44 52 techniques 41 thick Ethernet 52 thin Ethernet 52 trunk cable 52 unusable 43 usable 43 UTP 29 32 33 39 41 47 voice grade 39 voice quality 41 carrier sense 48 ...

Страница 65: ...7 30 49 E Ethernet 2 3 16 22 30 32 41 45 47 F fiber optic 32 45 47 firmware cassette slot 12 23 34 forms fax order 53 manual feedback 55 G glossary 47 H hot swapping 10 26 35 37 49 hub 1 7 15 20 25 29 36 39 Hub MIB 2 16 30 hub MIB 2 16 30 I indicator activity 22 24 25 26 collision 22 fault 22 link 8 22 24 25 26 33 no link 22 partitioned 22 power 22 24 receiving 22 self test 23 indicators activity ...

Страница 66: ...2 30 AT 3624TRS 1 2 5 6 29 30 32 33 35 AT 3624TS 1 2 5 31 34 36 backup 6 13 35 36 47 hub repeater 49 master 2 3 6 13 30 31 35 36 37 50 slave 1 3 6 29 30 31 34 36 51 slaves 35 N Network Interface Controller NIC 22 network interface controller NIC 32 NIC 42 P patch panel 19 50 physical medium attachment PMA 50 physical signaling PLS 51 polarity correction 51 port AT 3624TRS 31 network 31 ports AUI 1...

Страница 67: ...urs 39 incident summary 53 indicator 39 power plug 39 slow data transfer 39 wiring lengths 39 troublshooting too many collisions 39 U unmanaged module 52 unshielded twisted pair UTP 3 4 unshieled twisted pair UTP 52 UTP 19 22 42 V ventilation 7 W wiring 3 4 11 12 17 18 22 29 31 32 33 39 41 42 43 44 45 46 47 48 49 50 52 rules 23 ...

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