Allied Telesis AT-3608, AT-3606F/SMA, AT-3612T, AT-3612TR, AT-3624T Installation Manual

...

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Electrical Safety and Installation Requirements

RADIATED ENERGY

U.S. Federal Communications Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of 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 this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Note: Modiﬁcations or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate this equipment.

Canadian Department of Communications This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

STANDARDS: This product meets the following standards

RFI EmissionEN55022 Class A

WARNING: In a domestic environment this product may cause radio interference in which case the user may be required to take

adequate measures.

Immunity EN50082-1

Electrical Safety EN60950, UL1950, CSA 950

SAFETY LIGHTNING DANGER

DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.

This is a “CLASS 1 LED PRODUCT”

OPERATING TEMPERATURE: This product is designed for a maximum ambient temperature of 40 degrees C.

ENVIRONMENTAL AIR NOTICE Caution: UL listed for use in other Environmental Air Spaces in Accordance with Article 300-22(C) of the U.S.A National Electrical Code.

Note: Product is not Plenum rated

ALL COUNTRIES: Install product in accordance with local and National Electrical Codes.

NORMEN : Dieses Produkt erfüllt die Anforderungen der nachfolgenden Normen.

Hochfrequenzstörung EN55022 Klasse A

WARNUNG : Bei Verwendung zu Hause kann dieses Produkt Funkstörungen hervorrufen. In diesem Fall müßte der Anwender

angemessene Gegenmaßnahmen ergreifen.

Störsicherheit EN50082-1

Elektrische Sicherheit EN60950, UL1950, CSA 950

SICHERHEIT GEFAHR DURCH BLITZSCHLAG

GEFAHR : Keine Arbeiten am Gerät oder an den Kabeln während eines Gewitters ausführen

Das ist ein “LED Produkt der Klasse 1”

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.

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Radiofrekvens forstyrrelsesemission EN55022 Klasse A

ADVARSEL : I et hjemligt miljø kunne dette produkt forårsage radio forstyrrelse. Bliver det tilfældet, påkræves brugeren muligvis

at tage tilstrækkelige foranstaltninger.

Immunitet EN50082-1

Elektrisk sikkerhed. EN60950, UL1950, CSA 950.

SIKKERHED FARE UNDER UVEJR

FARE: UNDLAD at arbejde på udstyr eller KABLER i perioder med LYNAKTIVITET.

Dette er et “PRODUKT UNDER KLASSE 1 LED”

BETJENINGSTEMPERATUR

Dette apparat er konstrueret til en omgivende temperatur på maksimum 40 grader C.

ALLE LANDE : Installation af produktet skal ske i overensstemmelse med lokal og national lovgivning for elektriske installationer.

RFI Emissie EN55022 Klasse A

WAARSCHUWING: Binnenshuis kan dit product radiostoring veroorzaken, in welk geval de gebruiker verplicht kan worden om

gepaste maatregelen te nemen.

Immuniteit EN50082-1

Electrische Veiligheid EN60950, UL1950, CSA 950

VEILIGHEID GEVAAR VOOR BLIKSEMINSLAG

GEVAAR : NIET aan toestellen of KABELS WERKEN bij BLIKSEM.

Dit is een “KLASSE 1 LED-PRODUKT”

BEDRIJFSTEMPERATUUR

De omgevingstemperatuur voor dit produkt mag niet meer bedragen dan 40 graden Celsius.

ALLE LANDEN: het toestel installeren overeenkomstig de lokale en nationale elektrische voorschriften.

NORMES : ce produit est conforme aux normes de suivantes :

Emission d’interférences radioélectriques EN55022 Classe A

MISE EN GARDE : dans un environnement domestique, ce produit peut provoquer des interférences radioélectriques. Auquel cas,

l’utilisateur devra prendre les mesures adéquates.

Immunité EN50082 - 1

Sécurité électrique EN60950, UL1950, CSA 950

SÉCURITÉ DANGER DE FOUDRE

DANGER: NE PAS MANIER le matériel ou les CÂBLES lors d’activité orageuse.

Ce matériel est un “PRODUIT À DIODE ÉLECTROLUMINESCENTE DE CLASSE 1”

TEMPÉRATURE DE FONCTIONNEMENT

Ce matériel est capable de tolérer une température ambiante maximum de 40 degrés Celsius.

POUR TOUS PAYS : Installer le matériel conformément aux normes électriques nationales et locales.

Radioaaltojen häirintä EN55022 Luokka A

VAROITUS : Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on mahdollisesti

ryhdyttävä tarpeellisiin toimenpiteisiin.

Kestävyys EN50082-1

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Sähköturvallisuus EN60950, UL1950, CSA 950

TURVALLISUUS ALAMANISKUVAARA

HENGENVAARA : ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA.

Tämä on “ENSIMMÄISEN LUOKAN VALODIODITUOTE”

KÄYTTÖLÄMPÖTILA

Tämä tuote on suunniteltu ympäröivän ilman maksimilämpötilalle 40 ° C.

KAIKKI MAAT : Asenna tuote paikallisten ja kansallisten sähköturvallisuusmääräysten mukaisesti.

Emissione RFI (interferenza di radiofrequenza) EN55022 Classe A

AVVERTENZA : in ambiente domestico questo prodotto potrebbe causare radio interferenza. In questo caso potrebbe richiedersi

all’utente di prendere gli adeguati provvedimenti.

Immunità EN50082-1

Sicurezza elettrica EN60950, UL1950, CSA 950

NORME DI SICUREZZA PERICOLO DI FULMINI

PERICOLO : NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI TEMPORALESCHE.

Questo è un “PRODOTTO CON LED DI CLASSE 1”

TEMPERATURA DI FUNZIONAMENTO

Questo prodotto è concepito per una temperatura ambientale massima di 40 gradi centigradi.

TUTTI I PAESI: installare il prodotto in conformità delle 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 FARE FOR LYNNEDSLAG

FARE : ARBEID IKKE på utstyr eller KABLER i TORDENVÆR.

Dette er et “KLASSE 1 LED PRODUKT”

DRIFTSTEMPERATUR

Dette produktet er konstruert for bruk i maksimum romtemperatur på 40 grader celsius.

ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale elektriske koder.

Emissão de interferência de radiofrequência EN55022 Classe A

AVISO : Num ambiente doméstico este produto pode causar interferência na radiorrecepção e, neste caso, pode ser necessário que o

utente tome as medidas adequadas.

Imunidade EN50082-1

Segurança Eléctrica EN60950, UL1950, CSA 950

SEGURANÇA PERIGO DE CHOQUE CAUSADO POR RAIO

PERIGO : NÃO TRABALHE no equipamento ou nos CABOS durante períodos suscetíveis a QUEDAS DE RAIO.

Este é um “PRODUTO CLASSE 1 LED”

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TEMPERATURA DE FUNCIONAMENTO

Este produto foi projetado para uma temperatura ambiente máxima de 40 graus centígrados.

TODOS OS PAÍSES : Instale o produto de acordo com as normas nacionais e locais para instalações elétricas.

Emisión RFI EN55022 Clase A

ADVERTENCIA : en un entorno doméstico, este producto puede causar radiointerferencias, en cuyo caso, puede requerirse del

usuario que tome las medidas que sean convenientes al respecto.

Inmunidad EN50082-1

Seguridad eléctrica EN60950, UL1950, CSA 950

SEGURIDAD PELIGRO DE RAYOS

PELIGRO : NO REALICE NINGUN TIPO DE TRABAJO O CONEXION en los equipos o en LOS CABLES durante TORMENTAS

ELECTRICAS.

Este es un “PRODUCTO DE DIODO LUMINISCENTE (LED) CLASE 1”

TEMPERATURA REQUERIDA PARA LA OPERACIÓN

Este producto está diseñado para una temperatura ambiental máxima de 40 grados C.

PARA TODOS LOS PAÍSES : Monte el producto de acuerdo con los Códigos Eléctricos locales y nacionales.

Radiostörning EN55022 Klass A

VARNING : Denna produkt kan ge upphov till radiostörningar i hemmet, vilket kan tvinga användaren till att vidtaga erforderliga

åtgärder.

Immunitet EN50082-1

Elsäkerhet EN60950, UL1950, CSA 950

SÄKERHET FARA FÖR BLIXTNEDSLAG

FARA : ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER.

Detta är en “KLASS 1 LYSDIODPRODUKT”

DRIFTSTEMPERATUR

Denna produkt är konstruerad för rumstemperatur ej överstigande 40 grader Celsius.

ALLA LÄNDER: Installera produkten i enlighet med lokala och statliga bestämmelser för elektrisk utrustning.

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CentreCOM

3600 Series Manageable Hub/Repeaters

AT-3606F & AT-3606F/SMA AT-3606F/ST, SC & SM AT-3608 AT-3612T AT-3612TR AT-3624T AT-3624TR

Installation Manual

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

Allied Telesyn International reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn International be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesyn International has been advised of, known, or should have known, the possibility of such damages.

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. Microsoft and MS-DOS are registered trademarks and LAN Manager and Windows for Workgroups are trademarks of Microsoft Corporation. 3Com is a registered trademark of 3Com. PC-NFS is a trademark of Sun Microsystems, Inc. PC/TCP is a registered trademark of FTP Software, Inc. DECnet is a registered trademark of Digital Equipment Corporation.

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Electrical Safety and Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i

Chapter 1

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

CentreCOM AT-3600 Series Hubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Wiring Configuration Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chassis Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Network Management Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Central-Site Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Upgrading Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Further Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installing Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

AT-3600 Port Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

RS232 Terminal Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appliqué Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appliqué Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

External Transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Back Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Hub Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Troubleshooting the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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Table of Contents

Chapter 3

AT-3606F and AT-3606F/SMA Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

AT-3606F and AT-3606F/SMA Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fiber Optic (10BASE-FL) Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fiber Optic Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter 4

AT-3606F/SM, SC, ST Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Fiber Optic Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Fiber Optic (FOIRL, 10BASE-FL) Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Fiber Optic Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Chapter 5

AT-3608 Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

AT-3608 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Cascade Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

10BASE2 Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Port Status Indicators and Terminator Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Terminator Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Chapter 6

AT-3612T Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

AT-3612T Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Hub Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Port Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Chapter 7

AT-3612TR Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

AT-3612TR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

RJ45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Chapter 8

AT-3624T Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

AT-3624T Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Chapter 9

AT-3624TR Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

AT-3624TR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

RJ45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

MDI/MDI-X Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

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CentreCOM 3600 Series Hub/Repeaters

Appendix A

UTP Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

UTP Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

UTP Hub-to-MAU Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

UTP MAU-to-MAU, Hub-to-Hub Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Appendix B

Telco Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Wiring Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

50-Pin Telco Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

50-Pin Telco-to-RJ45 Octopus Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

50-Pin Telco-to-RJ45 Harmonica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Appendix C

IEEE 802.3 Quick Primer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

10BASE-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Four-Repeater Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

10BASE-FL/FOIRL Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10BASE2 (Thin) Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10BASE5 (Thick) Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

AUI Drop Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Appendix D

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Appendix E

Technical Support Fax Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Incident Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Appendix F

CentreCOM AT-3600 Manual Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Appendix G

Where To Find Us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Appendix H

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Page 10

Table of Contents

List of Figures

Figure 1: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Figure 2: Populated 8-Slot Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Figure 3: MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Figure 4: Removing the Interrepeater Bus Dust Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 5: Removing Rubber Feet from Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 6: Attaching Chassis Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 7: AT-3600 RS232 DB9 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Figure 8: Network Appliqués . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Figure 9: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Figure 10: AUI Appliqué Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Figure 11: Slide-kit Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Figure 12: AUI Appliqué Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Figure 13: Appliqué Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Figure 14: AUI Connector Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Figure 15: Module Faceplate Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Figure 16: AT-3606F Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Figure 17: Hub Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Figure 18: AT-3606F Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Figure 19: ST Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Figure 20: SMA Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Figure 21: AT-3606F Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Figure 22: AT-3606F/SM Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Figure 23: AT-3606F/SC Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Figure 24: AT-3606F/ST Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Figure 25: ST Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 26: SC Connector for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 27: SMA Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 28: AT-3606F/SC Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 29: AT-3608 Front and Back Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 30: Normal/Cascade Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Figure 31: AT-3608 Cascade Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Figure 32: BNC-T at End of 10BASE2 Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Figure 33: BNC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Figure 34: BNC Port Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Figure 35: AT-3612T Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Figure 36: AT-3612T Hub Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Figure 37: AT-3612T Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Figure 38: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Figure 39: RJ45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Figure 40: AT-3612TR Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Figure 41: AT-3624T Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Figure 42: AT-3624T Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Figure 43: AT-3624TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Figure 44: RJ45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Figure 45: MDI/MDI-X Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Figure 46: AT-3624TR Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Figure 47: RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Figure 48: Hub-to-MAU Wiring (A) Usable and (B) Unusable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Figure 49: Hub-to-Hub or MAU-to-MAU Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Figure 50: 50-Pin Telco Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Figure 51: AT-ADAPT-2 Telco-to-RJ45 Harmonica Adapter for AT-3612T. . . . . . . . . . . . . . . . . . . . . . . . 54

Page 11

CentreCOM 3600 Series Hub/Repeaters

List of Tables

Table 1: Manageable AT-3600 Series Hub Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 2: ATl Network Port Appliqués . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 3: ATI Micro Transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 4: AT-3606F Series Hubs with Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 5: Usable and Unusable Twisted Pair Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 6: 50-Pin Telco Pin-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Page 12

Page 13

Chapter 1

Not

Overview

This manual describes the hardware features and installation procedures for Allied Telesyn International (ATI)’s set of independently manageable hub models in the AT-3600 Series.

The AT-3600 Series also includes “Slave” modules that are not manageable as standalone devices (the AT-3624TS and AT-3624TRS models). These devices have their own manual and are not described here. For information on the software installation and network management aspects of AT-3600 Series hubs, see the separate CentreCOM 3600 Series

and AT-S4 Firmware Module Network Operations Manual shipped with

each manageable hub.

CentreCOM AT-3600 Series Hubs

CentreCOM AT-3600 Series multiple-port hubs offer maximum ﬂexibility and redundancy for both workgroup and department needs. They are IEEE 802.3 compliant/Ethernet compatible and support Simple Network Management Protocol (SNMP) with both the second version of the Management Information Base (MIB-II) and hub MIB (also known as Hub MIB).

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 hub) or a department concentrator configuration.

Each manageable AT-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 topology. This enables you to build and reconﬁgure networks easily, efﬁciently, and at minimum expense.

Page 14

Overview

Figure 1:

Features

AT-3612TR Front and

Back Panels

AT-3600 Series hubs are based on an Application-Speciﬁc Integrated Circuit (ASIC) ATI developed for maximum functionality and reliability. Figure 1 shows a sample AT-3600 Series hub faceplate, in this case a Model AT-3612TR.

Data

ports

Port activity

Appliqué port

RS232 port

Hub status LEDsLEDs

Front

Back

Firmware

cassette port

Interrepeater

bus port

Each manageable AT-3600 Series hub is self-contained and provides the following standard features regardless of the media type or number of ports:

❑

Internal universal power supply

❑

IEEE 802.3 compliance; Ethernet Version 1.0 and 2.0 compatible hub functionality

❑

An Appliqué port supports optional transceiver modules for backbone or interrepeater connectivity:

— Unshielded Twisted Pair (UTP) (10BASE-T) — Thinnet (10BASE2) — Attachment Unit Interface (AUI) (10BASE5) — Fiber Optic (10BASE-FL)

❑

Placement options include a standalone 19-inch rack or chassis mount

❑

Three types of network management capability:

— SNMP — Via ASYNC ASCII terminal port (Omega) — Telnet (Omega)

❑

Software upgrade through firmware cassette or in-band downloading

❑

Hot swapping of modules in chassis

❑

Comprehensive diagnostic LED support

Page 15

Not

CentreCOM 3600 Series Hub/Repeaters

Connectivity

Table 1 shows the various models of manageable AT-3600 Series hubs. You can mix any combination of model types in a department concentrator chassis for maximum ﬂexibility. Subsequent chapters of this manual describe the individual model types in detail, including faceplate design, connection type and LED displays.

Table 1: Manageable AT-3600 Series Hub Models

Model Number Port Count Media/Connector Type

AT-3606F AT-3606F/ST

AT-3606F/SMA

AT-3606F/SM

AT-3606F/SC 6 Fiber Optic (10BASE-FL)

AT-3608 8 Thinnet (10BASE2)

AT-3612T 12 UTP (10BASE-T)

AT-3612TR 12 UTP (10BASE-T)

6 Fiber Optic (10BASE-FL)

with Straight Tip (ST) Connectors

6 Fiber Optic (10BASE-FL)

with Sub Miniature Assembly (SMA) Connectors

with Subscriber Channel(SC) Connectors

with Bayonet Nut Couple (BNC) Connectors

with Telco 50-pin (RJ21) Connector

with RJ45 Connectors

Wiring Conﬁguration

Rules

Chassis Configuration

AT-3624T 24 UTP (10BASE-T)

with 2 Telco 50-pin (RJ21) Connectors

AT-3624TR 24 UTP (10BASE-T)

with RJ45 Connectors

References in this manual to S MA and SM are interchangeable, both being acronyms for Sub Miniature Assembly.

Depending on the medium you choose, there are certain wiring practices you should follow to ensure the reliability of communication throughout the network. The AT-3600 Series complies with IEEE standards for 802.3 Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Ethernet. You should refer to these standards when implementing your network. Some important guidelines for ensuring integrity in network wiring appear in later chapters of this manual, as appropriate for the medium type.

You can use a single manageable AT-3600 Series hub in standalone mode or as part of a department concentrator housed in a chassis. Various chassis models are available for desktop or rackmount conﬁgurations. These include 1-, 2-, 3-, 4-, 7-, and 8-module combinations for desktop or 19-inch rackmount installations with either standard or segmented backplanes. Call your ATI sales representative for details.

Page 16

Overview

Figure 2:

Populated 8-Slot Chassis

You can conﬁgure up to eight AT-3600 Series hubs in a rackmount chassis. When fully populated with AT-3624T and AT-3624TR hubs, the chassis creates a single department concentrator with up to 200 ports (8 modules with 24 network ports each, plus 8 AUI ports).

Figure 2 shows a sample department concentrator using an 8-slot chassis.

Department Concentrator Chassis

RS-232

ON LINE

TX RX

RECEIVE

ON LINE

TX RX

RECEIVE

1 2 3 4 5 6 7

ON LINE

OFF

TERMINATOR

RECEIVE

1 2 3 4 5 6 7

ON LINE

OFF

TERMINATOR

RECEIVE

1 2 3 4 5 6 7 8 9 10 11 12

XXXX XXXX XXXX

PORT ACTIVITY

123456

3624TRS

XXXXXX

CentreCOM

IEEE 802.3/ETHERNET 10BASE-T

24 PORT HUB/REPEATER

TERMINATOR

TX RX

ON LINE

OFF

RECEIVE

ON LINE

OFF

RECEIVE

ON LINE

RECEIVE

ON LINE

RECEIVE

PORT STATUS INDICATOR STATUS

TX RX

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

RECEIVE

FOIRL NETWORK PORTS 1-6

ON LINE

RECEIVE

FOIRL NETWORK PORTS 1-8

FOIRL NETWORK PORTS 1-6

ON LINE

TX RX

RECEIVE

ON LINE

TX RX

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

STATUS

COLLISION

MASTER

FAULT

ACTIVITY

STATUS

COLLISION

MASTER

FAULT

ACTIVITY

NO LINK INDICATOR OFF

LINK INDICATOR ON GREEN RECEIVING INDICATOR FLASHING GREEN

7 8 9 10 11 12

XXXXXX

ON LINE

OFF

RECEIVE

ON LINE

OFF

RECEIVE

O W E R

ON LINE

TX RX

RECEIVE

ON LINE

TX RX

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

PORT ACTIVITY10BASET NETWORK PORTS 1-12

PORT STATUS INDICATOR STATUS

Indicator OFF

No Link

Link

Indicator ON

Receiving

Indicator FLASHING

10 12

911

PORT ACTIVITY10BASET NETWORK PORTS 1-12

PORT STATUS INDICATOR STATUS

Indicator OFF

No Link

Link

Indicator ON

Receiving

Indicator FLASHING

10 12

911

PORT ACTIVITY10BASET NETWORK PORTS

PORT STATUS INDICATOR STATUS

No Link

Indicator OFF

Link

Indicator ON

Receiving

Indicator FLASHING

24 121068

13 11957

13 14 15 16 17 18

XXXXXX

TERMINAL PORT

AUI

APPLIQUÉ PORT

TERMINAL PORT

AUI

APPLIQUÉ PORT

TERMINAL PORT

AUI

APPLIQUÉ PORT

TERMINAL PORT

AUI

APPLIQUÉ PORT

TERMINAL PORT

LINK

FOIRL

APPLIQUÉ PORT

TERMINAL PORT

LINK

FOIRL

APPLIQUÉ PORT

1 2 3 4 5 6 7 8

TERMINAL PORT

LINK

10 BASE-T

APPLIQUÉ PORT

PARTITIONED INDICATOR ON AMBER COLLISION INDICATOR FLASHING AMBER

19 20 21 22 23 24

XXXXXX

POWER

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

RS-232

STATUS

FAULT

MASTER

POWER

3606F

CentreCOM

IEEE 802.3/ETHERNET FOIRL MULTIPORT HUB/REPEATER

with Network Management

POWER

3606F

CentreCOM

IEEE 802.3/ETHERNET FOIRL MULTIPORT HUB/REPEATER

with Network Management

POWER

3608

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

POWER

3608

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

POWER

3612T

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

POWER

3612T

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

POWER

3612TR

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

POWERSTATUS10BASE-T NETWORK PORTS

FAULT

ACTIVITY

POWER

Master

Backup

Slaves

❑

You can mount any combination of the following hub models in the same department concentrator chassis: AT-3606F; AT-3606F/SMA; AT-3606F/ ST, SC, SM; AT-3608; AT-3612T; AT-3612TR; AT-3624T; AT-3624TR; AT-3624TS; and AT-3624TRS.

Network management software will view the concentrator as a single logical device. In this conﬁguration the modules perform different functions:

The top module becomes the Master . It downloads software to, and serves as, the reporting unit for other units in the concentrator. It also controls management functions.

The module in the slot directly below the Master becomes the

Backup . It assumes management functions if the Master fails.

All other modules function as Slaves . They report management information to the Master but do not perform any control functions.

Each chassis must contain at least one manageable hub module to enable network management. This module must occupy the uppermost slot in the chassis. Because the uppermost manageable hub performs all management reporting activities, it is referred to as the Master . The other AT-3600 modules in the same chassis (except any Backup module that may be installed) are called

Slaves

Page 17

Chassis slots are numbered from 1 (top) through 8 (bottom). The Master is deﬁned as the module in the lowest-numbered (physically topmost) occupied slot position. Typically this is slot 1, but it could be slot 2 if slot 1 is vacant.

A second manageable AT-3600 module may be installed in the slot directly below the Master to serve as a Backup management unit. This special module always occupies the next higher-numbered slot position below the Master so it can immediately take over the Master’s functions if necessary.

Slave modules (AT-3624TS and AT-3624TRS) may occupy any other higher-numbered slot position in the chassis—they do not need to be adjacent or contiguous. (In other words, Slave units may be separated by empty chassis slots.)

Network Management Planning

Before installing and connecting manageable AT-3600 Series hubs at various site locations (such as in closets in a single building or in closets on different ﬂoors or in different buildings), you need to decide on the number of hubs in your network and where each hub is to be located. This advanced planning will facilitate the assignment of hub names, MAC and/ or IP addresses. It will also maximize the efﬁciency of network management once your hubs are fully installed and operational.

CentreCOM 3600 Series Hub/Repeaters

MAC Address All “intelligent” ATI hubs (those with management capabilities) require a

unique 6-byte (12-digit) Media Access Control (MAC) address which includes a 3-byte (6-digit) company identiﬁcation number.

The MAC address is a unique number assigned to the nodes using the network. The MAC address is used to resolve conﬂict when multiple computers are trying to access the network simultaneously. This IEEE physical storage location address resides in the MAC PROM and is accessed through an ASCII terminal.

In order to make this address easily accessible and externally visible, a MAC address label will be afﬁxed on all products within the proximate location of the RS232, BNC or AUI port.

The example shown in Figure 3 is a MAC address label placed above a RS232 port on an AT-3612T hub.

Page 18

Overview

Figure 3: MAC Address

Central-Site

Connection

MASTER

STATUS

COLLISION

FAULT

ACTIVITY

Partitioned

Amber ON

Link

Green ON

Collision

Green FLASHING

Amber FLASHING

5768911

10 12

AUI

APPLIQUÉ PORT

Receiving

P O W

E R

PORT STATUS INDICATOR STATUS

No Link OFF

RS-232

TERMINAL PORT

MAC ADDRESS 0000F4XXXXXX

POWERPORT ACTIVITY10BASE-T PORTS 1 - 12

3612T

CentreCOM

IEEE 802.3/ETHERNET 10BASE-T

12 PORT HUB/REPEATER with Network Management

RS-232

TERMINAL PORT

MAC ADDRESS 0000F4XXXXXX

To enable central-site connection and network management, every hub in a TCP network must have an installed TCP/IP address. You can install a TCP/IP address either by connecting to the serial port of a hub and bringing up the Omega local management program or by using a Bootp server.

The “Network parameters” option (n) in the Omega Administration menu allows you to conﬁgure IP and SNMP information for the hubs in a TCP/IP network. This menu leads you through a series of conﬁguration screens detailed in the CentreCOM 3600 Series and AT-S4 Firmware Module

Network Operations Manual.

Upgrading

Software

Further Information

The AT-3600 agent software is easy to upgrade through the ﬁrmware cassette port. As illustrated in Figure 1, this port is located on the back panel of every AT-3600 Series module with management capability. When you insert an optional AT-S4 ﬁrmware cassette into this port, the new ﬁrmware is copied to the hub’s onboard non-volatile ﬂash memory at power-up.

Once you have upgraded one hub through the ﬁrmware cassette, you can use Omega’s built-in downloading capability to upgrade any AT-3600 Series hub over the network from any other AT-3600 unit. In addition, the on-line Bulletin Board System (BBS) maintained by ATI Technical Support offers software updates for download via the SNMP utilities Trivial File Transfer Protocol (TFTP) and Boot Protocol (BootP).

For more detailed information about AT-S4 capabilities and installation, refer to the CentreCOM 3600 Series and AT-S4 Firmware Module Network

Operations Manual.

Page 19

Chapter 2

Hardware Installation

Site Preparation

Before installing AT-3600 Series hubs, read the safety installation requirements starting on page i.

Location A manageable AT-3600 Series hub can operate as a standalone product,

installed in a chassis, in a 19-inch rack, or on a desk top. You can combine multiple hubs in an ATI chassis.

ttention

Ventilation The site must have adequate ventilation to provide an operating

Installing Hubs

environment consistent with AT-3600 Series speciﬁcations. Chassis mounting requires 191 mm (7.5 in.) ventilation clearance on all sides. AT-3600 Series hubs have internal fans to aid in cooling. For the fans to function correctly, you must not block the ventilation openings located on the sides of the chassis.

ttention

Maximum ambient temperature is 40o C with a department concentrator chassis.

Power Power connections for each unit should be able to provide 50 watts at

120 VAC for U.S.A. versions. It is customary to use dedicated power circuits or power conditioners to supply power to the network devices. This helps isolate the network equipment from electrical power “noise.”

This section contains two separate procedures for installing manageable AT-3600 Series hubs:

❑ Standalone installation ❑ Installation in a managed hub configuration in a concentrator

chassis

Page 20

Hardware Installation

Installing a standalone hub

Use the following procedure to install an AT-3600 Series hub in a standalone conﬁguration:

1. Plug one end of the power cord into the hub’s power receptacle and the other end into a power outlet.

2. Check to see that the Power and Master indicators illuminate.

3. Plug your data cables into the hub and the network device. The Link indicator for each connected port will illuminate (except

on the AT-3606F, AT-3606F/SMA, and AT-3608). If one or more of the ports are transferring data, the Receive

indicator will also illuminate.

The hub is now ready to be managed.

Installing a module in a four- or eight-slot managed hub configuration

ttention

Improper installation of the chassis can expose personnel to high voltages, risking the possibility of injury or death.

ttention

Improper installation may expose the hubs to debris and block vents, causing damage because of insufficient cooling.

ttention

When installing multiple ATI hubs in a chassis with power, setting the chassis voltage switch too high (at 240V when 120V is required) will cause overheating of the fans. Setting the voltage too low (at 120V when 240V is required) will reduce the effectiveness of the fans and thus cause overheating of the installed hub modules. Check the speciﬁc chassis model to determine the correct voltage setting.

1. Check to be sure another module is already functioning as the Master unit in the chassis.

Page 21

Figure 4: Removing the

Interrepeater Bus Dust Cover

CentreCOM 3600 Series Hub/Repeaters

2. Remove the interrepeater bus dust cover from the back of any newly shipped AT-3600 module before installing it in a multi-module chassis. The interrepeater bus port is located on the back panel of every AT-3600 module. See Figure 4.

STATUS

FAULT

POWER MASTER

INTERREPEATER BUS

Dust Cover

STATUS

FAULT

POWER MASTER

Dust Cover

AT-36xx with dust cover installed

Interrepeater

Interrepeater Bus Port Connector

Bus Port Connector

IEEE 802.3/ETHERNET 10BASE2 8 PORT HUB/REPEATER with Network Management

FIRMWARE CASSETTE

INTERREPEATER BUS

FIRMWARE CASSETTE

AT-36xx with dust cover removed

3. Remove the rubber feet from the bottom of any newly shipped AT-3600 Series module before installing it in a multi-module chassis. See Figure 5.

Figure 5: Removing Rubber

Feet from Module

AUI

Rubber foot (1 of 4)

Reinstall all 4 screws

4. Reinstall the screws, after removing the rubber feet, to prevent the module casing from expanding and warping.

5. Attach the chassis guide/handle assembly to each side of the module, using the screws provided with the chassis. See Figure 6.

PORT ACTIVITY10BASET NETWORK PORTS

RS-232

POWER

STATUS

1 2 3 4 5 6 7 8

PORT STATUS INDICATOR STATUS

TERMINAL PORT

No Link

Indicator OFF

LINK

Link

Indicator ON

Receiving

Indicator FLASHING

24 121068

10 BASE-T

AUI

13 11957

APPLIQUÉ PORT

3612TR

CentreCOM

IEEE 802.3/ETHERNET 10BASE2

FAULT

MULTIPORT HUB/REPEATER with Network Management

MASTER

POWER

Front of module

Chassis guide handle

1 2 3 4 5 6 7 8 9 10 11 12

XXXX XXXX XXXX

Figure 6: Attaching Chassis

Guides

Page 22

Hardware Installation

Not

Figure 6 shows a sample guide assembly only; some chassis models use a different type of guide assembly.

6. Make sure the chassis guide handles are aligned with the front (i.e., connector side) of the module, as shown in Figure 6.

7. If necessary, remove the blank faceplate/air-dam assembly from the slot in which you will be installing the module.

8. Align the guide rails on either side of the module with the grooves in the chassis slot.

9. Slide the module along the chassis guide in the chassis, but do not seat it in the chassis backplane connector.

10. Plug in the newly installed module’s power cord.

11. Check to see that the Power and Master indicators illuminate before seating the module in the chassis backplane.

12. Seat the module carefully and firmly in the chassis backplane.

The indicator on the Master unit should not illuminate when a module is installed in a chassis as a Back-up or Slave unit. (See Figure 2 in Chapter 1 of this manual.)

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 and the network.

15. Check the Link indicators. If one or more of the ports on the module are transferring data, the

Receive indicator will illuminate.

The AT-3600 Series module is now active in the chassis as a component of a network concentrator.

For conﬁrmation, you can obtain hub and port status information via network management. To enable management from a PC monitor, the PC must be connected to the Master unit through the Master’s RS232 port (illustrated in Figure 7).

You should always quit the Omega management program at the end of each session, before reconfiguring the hubs in a chassis. Otherwise, you might encounter such problems as not being able to exchange management hubs in a chassis.

If you need to reinstall or update the network management software in a hub module, refer to the CentreCOM 3600 Series and AT-S4 Firmware

Module Network Operations Guide.

Page 23

CentreCOM 3600 Series Hub/Repeaters

Not

ttention

Upon initial power-up, the LEDs (including the red Fault lights) on all units connected through a chassis backplane will activate. This is a normal cycling function and is not any indication of a problem.

AT-3600 Port Configurations

RS232 Terminal Port All AT-3600 Series manageable hubs include an RS232 Terminal Port on

the front panel. Figure 7 shows the RS232 Terminal Port whose principal use is the connection of a local network management terminal to access Omega.

Figure 7: AT-3600 RS232 DB9

Connector

Appliqué Ports AT-3600 Series hub models feature a variety of port counts and support a

This port conforms to the signaling characteristics of EIA standard RS232 and implements the signals necessary to support an asynchronous device. The physical connector is not, however, an RS232 DB25, but is instead a DB9 commonly used on PCs.

For more information, including pin-out assignments for enabling an AT-3600 module as Data Communication Equipment (DCE) or as Data Terminal Equipment (DTE), refer to the CentreCOM 3600 Series and AT-S4

Firmware Module Network Operations Manual.

variety of media, including:

❑ Fiber optic(10BASE-FL), using ST, SC, or SMA connectors ❑ Thinnet (10BASE2), using BNC connectors ❑ UTP/STP (10BASE-T), using Telco RJ21 or RJ45 connectors ❑ Thick Ethernet (10BASE5), using the AUI connector

AT-3600 Series hubs with management capability have a convertible network (appliqué port located on the front panel. In a department concentrator conﬁguration, you might typically use one hub module’s appliqué port for the network connection and the other modules’ appliqué ports for station connections.

The network appliqué port is convertible on all AT-3600 Series hubs with management capability. You may conﬁgure it by replacing the networkinterface appliqué (or (internal transceiver) as described below, or you might have purchased it preconﬁgured at the factory.

Page 24

Hardware Installation

Not

In addition to the AUI interface, optional appliqués are available for connection with ﬁber optic (ST, SC, or SM), thinnet (BNC) or UTP (RJ45) cabling. Figure 8 shows the available (appliqué faceplates.

AT-A1 (SMA) AT-A2 (SC)

Figure 8: Network Appliqués

AT-A3 (ST)

AT-A8 (BNC)

AT-A5 (AUI)

AT-A9 (10BASE-T)

During the swap-out of an appliqué, it is advisable to turn off the power since

you will be removing screws and inserting metal parts into the appliqué opening.

You can combine any hub model with any of the six network port appliqués shown in Table 2.

Table 2: ATl Network Port Appliqués

Sufﬁx Network Interconnect Appliqué

-x

1 SM/SMA Fiber Optic Port

-x

2 SC Fiber Optic Port

-x

3 ST Fiber Optic Port

-x

5 AUI Port

-x

8 BNC Port

-x

9 RJ45 Port

Page 25

CentreCOM 3600 Series Hub/Repeaters

M3x6 ﬂ

The x in the “sufﬁx” column above indicates the power type, where:

❑ “1” is a universal power supply with a U.S.A.-style power cord. ❑ “2” is a universal power supply without power cord (export model).

For example:

❑ If you were to order an AT-3606F-18 (i.e. x = 1) hub with 6 fiber

optic station ports, it would be provided with a U.S.A.-style power cord and a BNC (10BASE2) network interconnect port.

❑ If you were to order an AT-3606F-28 (i.e. x = 2) hub with 6 fiber

optic station ports, however, it would be provided with a BNC (10BASE2) network interconnect port but without a power cord.

Appliqué Installation Procedures

Figure 9: AT-3612TR Front and

Back Panels

Appliqués attach to any AT-3600 Series hub with management capability through the front panel appliqué port. This port is located to the left of the power receptacle and the RS232 terminal port, as shown in Figure 9.

RS232 Power

receptacleport

Appliqué port

Front

Back

To remove an AUI appliqué

Figure 10: AUI Appliqué

Assembly

1. Detach the AUI appliqué assembly installed on the front panel appliqué port. Loosen the two M3x6 flat-head screws to the far right and left on the connector plate, shown in Figure 10.

at-head screws

Connector plate

AUI connector

Page 26

Hardware Installation

Not

Figure 11: Slide-kit Screws

Do not unscrew the AUI slide-kit screws shown in Figure 11 until the entire appliqué assembly (i.e., AUI connector, connector plate, and attached

ribbon cable) pops out. The washers and nuts on the back of the slide-kit may fall inside the hub module and will be difficult to retrieve.

AUI connector

Appliqué connector plate

Slide-kit screws

2. Carefully pull the AUI appliqué assembly from the hub faceplate to expose the ribbon cable (shown in Figure 13).

3. Detach the AUI connector from the appliqué connector plate by removing the slide-kit screws, washers, and nuts.

4. Separate the AUI appliqué connector plate from the ribbon cable by rotating the cable 90° and sliding it through the slot in the connector plate shown in Figure 12.

Figure 12: AUI Appliqué

Connector Plate

Slot enabling pass-through of ribbon cable

Connector plate screw holes

5. Store the detached AUI appliqué plate, slide-kit screws, washers, and nuts in a secure container for future use.

Page 27

CentreCOM 3600 Series Hub/Repeaters

To install a 10BASE2, 10BASE-T or fiber Optic (10BASE-FL) appliqué

1. Remove the AUI appliqué (as described above).

2. Plug the replacement 10BASE2, 10BASE-T, or 10BASE-FL appliqué into the AUI connector, as shown in Figure 13.

Figure 13: Appliqué

Installation

Replacement appliqué

AUI connector

Open

appliqué

port

Ribbon cable

3. Secure the interface between the replacement appliqué and the AUI connector by using 4-40 pan-head screws as shown in Figure 14. Note that these screws connect the AUI connector to the rear section of the replacement appliqué, which is not shown in Figure 14.

Replacement appliqué

4-40 pan-head screw holes

Figure 14: AUI Connector

Interface

AUI connector

Page 28

Hardware Installation

4. Slide the replacement appliqué into the port cavity so its faceplate is flush with the surface of the hub faceplate. Then, screw it down with the two thumb screws provided with the replacement appliqué, as shown in Figures 15. Do not overtighten.

Thumb screws

Figure 15: Module Faceplate

Interface

Front

Back

Appliqué

To remove a 10BASE2, 10BASE-T or fiber Optic (10BASE-FL) appliqué

1. Loosen the two thumb screws (shown in Figure 15) and pull out the existing appliqué.

2. Remove the 4-40 pan-head screws from the AUI connector and ribbon cable assembly (reverse of Step 3 and related Figure 14 above).

3. Store the removed 10BASE2, 10BASE-T, or 10BASE-FL appliqué assembly in a secure container for future use.

To install an AUI appliqué

1. Using the supplied screws, washers, and nuts, attach the AUI appliqué connector plate and locking bracket (slide-kit) to the AUI connector. (Reverse order of Steps 1 through 5 and associated Figure 10 through Figure 12 above.)

2. Using the two M3x6 flat-head appliqué screws, attach the AUI appliqué to the hub faceplate.

ttention

Loose metal parts can cause damage to exposed circuit boards and components. Handle parts and any required tools with care during installation.

Page 29

CentreCOM 3600 Series Hub/Repeaters

External Transceivers Another option is to conﬁgure the AT-3600 AUI network port for other

media by using an external transceiver. Table 3 shows the ATI micro transceivers available for this purpose.

Table 3: ATI Micro Transceivers

Model Description

AT-MX25F or AT-MX50F/SM Fiber Optic (10BASE-FL), SMA Connector

AT-MX26F or AT-MX40F/ST Fiber Optic (10BASE-FL), ST Connector

AT-MX55F/SC Fiber Optic (10BASE-FL), SC Connector

AT-210T or AT-210TS or AT-MX20T UTP (10BASE-T)

AT-MX10 or AT-MX10S Thin Ethernet (10BASE2)

Back Panel Features

All independently manageable AT-3600 Series hubs have the same back panel layout and features. An AT-3606F is shown in Figure 16:

Figure 16: AT-3606F Back

Panel

CentreCOM

IEEE 802.3/ETHERNET 10BASE-FL/FOIRL 6 PORT HUB/REPEATER with Network Management

3606F

Firmware cassette

INTERREPEATER BUSFIRMWARE CASSETTE

STATUS

POWER MASTER FAULT

Interrepeater Hub status

LEDsbus port

port

❑ Firmware Cassette slot used to install new network management

software; see CentreCOM 3600 Series and AT-S4 Firmware Module

Network Operations Manual.

❑ 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 front and back panels of each AT-3600 module.

Page 30

Hardware Installation

Not

LED Displays

AT-3600 Series hubs have two types of LED displays:

❑ Hub status indicators show the overall condition of the module. ❑ Port indicators show the condition of each port connection. They

vary with module type; later chapters of this manual give specifics.

Hub Status Indicators The LEDs shown in Figure 17 appear on the back panel of each AT-3600

Series hub.

STATUS

POWER MASTER FAULT

Figure 17: Hub Status LEDs

POWER—Green whenever power is applied.

MASTER— Amber indicates the currently active Master. (Illuminates on

the Master or on the Backup when the Backup has taken over the Master function).

FAULT—(OFF under normal operational conditions):

❑ Stays red for a very short time while power-on/reset diagnostics are

run; remains continually red if a malfunction occurs during the diagnostics.

❑ Turns red (on a Master only) if the Master fails; if the Backup

detects a failure of the Master, the Backup takes over the Master function.

If the Master fails, its software may not be able to turn OFF its own Master LED; consequently, the Master LED may be illuminated on two modules in the backplane. In this kind of failure, however, the original Master’s Fault LED will also be illuminated to indicate the failure.

The AT-3612T has additional hub indicators; see Chapter 6 for details.

Page 31

Troubleshooting the Installation

This section provides a checklist for resolving problems associated with your hub and cabling. The ﬁrst rule of troubleshooting is to isolate the problem. As you experiment, only vary one factor at a time. Substitute known good equipment and see if the problem persists or is eliminated.

As a preliminary check, perform the following steps

1. Do not overlook the obvious—check diagnostic LEDs and make

sure the cables and connectors are securely attached.

2. If there is no power indication, check to be sure the power plug is

properly seated at the hub and at the AC receptacle.

3. (UTP models only) If the UTP Link indicator does not illuminate,

make sure the cabling is intact and connected to a functioning port on the network. Check the cable configuration to make sure the connectors are wired correctly and a cross-over cable is not necessary (see Appendix A for details).

4. Use only UTP cable designed for use in 10BASE-T applications.

10BASE-T wiring lengths should not 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 work properly. If the cable is more or less round in section, you probably have data-grade cable. If, however, the cable appears flat (such as “Silver Satin” telephone-type cable), you probably have voicegrade cable which may cause transmission problems. If it looks like telephone cable, double check it. Also, if the wire pairing is incorrect, you may get a Link indication but have high data error rates.

6. If the Link indicator does not illuminate on a fiber optic segment, check to be sure the connectors are properly seated and that Receive connects to Transmit on the network device and vice versa. Check to be sure the cable conforms to specification and that the distance has not been exceeded (see Chapter 3 for more information.)

7. If data transfer is slow, collision-prone or non-existent on a 10BASE2 (BNC) port, make sure the segment is properly terminated on both ends and that there is no other termination between these two points. Also make sure the Terminator Switch is set correctly (see Chapter 5).

8. If too many collisions are present on an AUI connection, check to ensure that the external Ethernet transceiver connected to the AUI port has the SQE Test (Heartbeat) function disabled. Excessive network loading can also cause excessive collisions.

9. If a fault occurs (fault light stays ON), disengage the hub module from the backplane, unplug and replug the power cord and reseat the module.

10. If a Fault light illuminates at power-up, turn off the power and power-up a second time. Alternatively, insert a firmware cassette in the back-panel port of the unit. If neither of these actions corrects the problem, initiate a Return Material Authorization (RMA) to ATI.

CentreCOM 3600 Series Hub/Repeaters

Page 32

Page 33

Chapter 3

3606F

CentreCOM

IEEE 802.3/ETHERNET 10BASE-FL/FOIRL 6 PORT HUB/REPEATER with Network Management

STATUS

POWER MASTER FAULT

MASTER

POWER

FAULT

3606F

CentreCOM

IEEE 802.3/ETHERNET 10BASE-FL/FOIRL

6 PORT HUB/REPEATER

with Network Management

1 2 3 4 5 6

ON LINE

RECEIVE

TX RX

ON LINE

RECEIVE

TX RX

ON LINE

RECEIVE

TX RX

ON LINE

RECEIVE

TX RX

ON LINE

RECEIVE

TX RX

ON LINE

RECEIVE

TX RX

10BASE-FL/FOIRL NETWORK PORTS 1-6

INTERREPEATER BUS

RS-232

TERMINAL PORT

APPLIQUÉ PORT

STATUS

POWER

FIRMWARE CASSETTE

AUI

Front

Back

ST connectors

AUI port

RS232

port

Power

receptacle

port

Firmware cassette Interrepeater

bus port

Hub status

LEDs

Port activity LEDs

AT-3606F and AT-3606F/SMA Connectivity

AT-3606F and AT-3606F/SMA Modules

The AT-3600 Series includes two manageable hub modules with ﬁber optic (10BASE-FL) ports. Both models have six ﬁber optic ports; the only difference is the connector attachment type. The ST model has attachment points with two pins to connect bayonet-style ST (Straight Tip) connectors; the SMA (Sub Miniature Assembly) model has threaded attachment points to connect SMA connectors.

Figure 18: AT-3606F Front and

Back Panels

Figure 18 shows the front and back panels of the AT-3606F hub module. The following section describes the connectors in detail.

Page 34

AT-3606F and AT-3606F/SMA Connectivity

Fiber Optic (10BASE-FL) Wiring Specifications

The IEEE FOIRL standard limits a ﬁber segment length to 1 km (3,280 ft.). That is, the ﬁber optic cable that connects two hubs is limited to 1 km (3,280 ft.). On the other hand, the more recent IEEE 10BASE-FL standard limits a ﬁber segment length to 2 km (6,560 ft.). Note, however, that this only applies to topologies in which one 10BASE-FL node connects to another 10BASE-FL node. You can intermix 10BASE-FL and FOIRL nodes, but if the cable connects a 10BASE-FL node at one end and a FOIRL node at the other, the segment length is limited to 1 km (3,280 ft.).

AT-3606F and AT-3606F/SMA hubs support 62.5/125 micron and 50/125 micron duplex optical ﬁber cable (duplex refers to ﬁber optic cable pairs). Normally, duplex ﬁber optic cable is labeled TX or TD (transmit) and RX or RD (receive). This means it has a dedicated transmit cable and a dedicated receive cable. You must connect the receiving port (RX or RD) on one device to the transmitting (TX or TD) port on a second device for proper connectivity.

To connect a network device to one of the ﬁber optic ports on the AT-3606F Series hub:

Fiber Optic

Connectors

1. Attach both connectors at one end of the cable to the TX and RX ports on the network device.

2. Connect one of the paired connectors at the other end of the cable to the RX port on the hub.

3. Check for On Line indicator to illuminate.

4. When the On Line indicator illuminates, connect the other of the paired connectors to the TX port on the hub.

5. If On Line stays off, unplug the connector from RX and use the other of the pair.

Fiber optic hubs use one pair of ST or SMA type connectors per port connection.

ATI offers hub models with either ST or SMA ports because many existing (usually older) networking environments use SMA (or Biconic) connectors that are not physically compatible with ST connectors. ST connectors have recently become popular because they have less attenuation and vulnerability to human error than SMA connectors.

If you are presently in a network that uses both systems, an ST-SMA, hybrid cable is commercially available; it allows easy conversion from one type of connector to the other. This cable is a one-meter duplex ﬁber optic cable with ST connectors on one end and SMA connectors on the other.

Page 35

Figure 19: ST Connectors for

Fiber Optic Cabling

CentreCOM 3600 Series Hub/Repeaters

Figure 19 shows the bayonet-style ST connectors.

ttention

The ST connector is keyed. Gently rotate the connector to ensure proper mating of the ST plug receptacle. Be careful not to force the connector mating or you might damage the hub’s connector.

Figure 20: SMA Connectors for

Fiber Optic Cabling

Port Indicators

Figure 20 shows the threaded SMA connectors.

The port indicators on the AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis. The indicators are either an individual port LED or a central indicator for box level monitoring.

Page 36

AT-3606F and AT-3606F/SMA Connectivity

Port

Each ﬁber optic port supports the following indicator functions with two single-color front panel LEDs per port, as shown in Figure 21.

Figure 21: AT-3606F Port

Indicators

ON LINE

TX RX

RECEIVE

Port activity LEDs

ON LINE (Steady Green)—This indicates that the particular port has a valid link and is not partitioned.

If you fail to get an ON LINE light, one or more of the following conditions may be occurring:

❑ Network device at other end is turned OFF (transmitter is

inactive).

❑ Cable is damaged or broken, or attenuation is too high (i.e., too

little light is being received because the cable is too long).

❑ RX Port has failed. ❑ The cabling is incorrect. The RX Port is not connected to TX at the

other end, and you need to reverse the connectors.

RECEIVE (Flashing Amber)—This indicates that the port is receiving Ethernet packets

Page 37

Chapter 4

AT-3606F/SM, SC, ST Connectivity

Fiber Optic Ports

ATI offers three management-capable hubs, each with six ﬁber optic ports. The only physical difference among the three models is the connector attachment type:

❑ ST (Straight Tip) model has attachment points with two pins to

connect bayonet-style.

❑ SC (Subscriber Channel) model has a square push-pull mating

interface.

❑ SM (Sub Miniature Assembly) model has a threaded attachment

for connection with the module port.

Table 4 lists the model numbers, port counts, and media connector type for each.

Table 4: AT-3606F Series Hubs with Management

Model Number

AT-3606F/ST 6 Fiber Optic (10BASE-FL)

AT-3606F/SC 6 Fiber Optic (10BASE-FL)

AT-3606F/SM 6 Fiber Optic (10BASE-FL)

Figure 22 through Figure 24 show the front and back panels of the AT-3606F/SM, SC, ST repeater modules.

Port

Count

Media/Connector Type

with Straight Tip (ST) Connectors

with Subscriber Channel (SC) Connectors

with Sub Miniature Assembly (SMA) Connectors

Page 38

AT-3606F/SM, SC, ST Connectivity

Figure 22: AT-3606F/SM Front

and Back Panels

Front

Back

Front

6 SM ports

Port activity LEDs

Firmware cassette port

Interrepeater bus port

Port AUI RS232 activity

port

LEDs

RS232AUI portport

port

Hub status LEDs

Figure 23: AT-3606F/SC Front

and Back Panels

Back

1 2

6 SC ports

Firmware cassette port

Interrepeater bus port

Page 39

CentreCOM 3600 Series Hub/Repeaters

Port activity

Front

6 ST ports

Back

Figure 24: AT-3606F/ST Front

and Back Panels

LEDs

Firmware cassette port

Interrepeater

bus port

Fiber Optic (FOIRL, 10BASE-FL) Wiring Specifications

The IEEE FOIRL standard limits a ﬁber segment length to 1 km (3,280 ft.). That is, the ﬁber optic cable that connects two repeaters is limited to 1 km (3,280 ft.). On the other hand, the more recent IEEE 10BASE-FL standard limits a ﬁber segment length to 2 km (6,560 ft.). Note, however, that this only applies to topologies in which one 10BASE-FL node connects to another 10BASE-FL node. You can intermix 10BASE-FL and FOIRL nodes, but if the cable connects a 10BASE-FL node at one end with a FOIRL node at the other, the segment length is limited to 1 km (3,280 ft.).

AUI RS232 port

port

Hub status LEDs

AT-3606F/SM, SC, and ST hubs support 62.5/125 micron and 50/125 micron duplex optical ﬁber cable (duplex refers to ﬁber optic cable pairs). Normally, duplex ﬁber optic cable is labeled TX or TD (transmit) and RX or RD (receive). This means it has a dedicated transmit cable and a dedicated receive cable. You must connect the receiving port (RX or RD) on one device to the transmitting (TX or TD) port on a second device for proper connectivity.

To connect a network device to one of the ﬁber optic ports on an AT-3606F Series hub:

1. Attach both connectors at one end of the cable to the TX and RX ports on the network device.

2. Connect one of the paired connectors at the other end of the cable to the RX port on the hub.

3. Check for Link indicator to illuminate.

Page 40

AT-3606F/SM, SC, ST Connectivity

4. When the Link indicator illuminates, connect the other of the paired connectors to the TX port on the hub.

5. If Link stays off, unplug the connector from RX and use the other of the pair.

Fiber Optic

Connectors

Fiber optic repeaters use one pair of ST, SC, or SMA type connectors per port connection.

ATI offers repeater models with any one of the three types (ST, SC, or SM) because many existing (usually older) networking environments use SMA (or Biconic) connectors that are not physically compatible with ST or SC connectors. ST and SC connectors have recently become popular because they have less attenuation and vulnerability to human error than SMA connectors.

If your existing network uses a mix of ST, SC, and/or SC systems, a hybrid cable is commercially available. This cable allows easy conversion from one type of connector to the other. This cable is a one-meter duplex ﬁber optic cable with one type of connector pairs on one end and another type of connector pairs on the other.

Figure 25 shows the bayonet-style ST connectors.

Figure 25: ST Connectors for

Fiber Optic Cabling

ttention

The ST connector is keyed. Gently rotate the connector to ensure proper mating of the ST plug receptacle. Be careful not to force the connector mating or you might damage the hub’s connector.

Figure 26 shows the SC (Subscriber Channel) connector with square pushpull mating interface. Also shown is the optional duplexing clip. This clip helps prevent confusion between the transmit/receive (TX/RX) left-right sequence when an SC connector is plugged into an SC port.

Page 41

Figure 26: SC Connector for

Optional duplexing clip

Fiber Optic Cabling

CentreCOM 3600 Series Hub/Repeaters

Figure 27 shows the threaded SMA connectors.

Figure 27: SMA Connectors for

Fiber Optic Cabling

Port Indicators

The port indicators on the front panels of AT-3600 Series hubs provide visual diagnostic and activity information for network analysis. The indicators are either an individual port LED or a central indicator for boxlevel monitoring.

Each ﬁber optic port supports the following indicator functions with one dual-color front panel LED per port, as shown in Figure 28.

Port activity LED (dualcolor)

Figure 28: AT-3606F/SC Port

Indicators

Page 42

AT-3606F/SM, SC, ST Connectivity

LINK (Steady Green)—This indicates that the particular port has a valid link and is not partitioned.

If you fail to get a Link light, one or more of the following conditions may be occurring:

❑ Network device at other end is turned OFF (transmitter is inactive). ❑ Cable is damaged or broken, or attenuation is too high (i.e., too little

light is being received because the cable is too long).

❑ RX Port has failed. ❑ The cabling is incorrect. The RX Port is not connected to TX at the

other end, and you need to reverse the connectors.

RECEIVE (Flashing Green)—This indicates that the port is receiving Ethernet packets.

PARTITIONED (Steady Amber)—A steady amber port indicator means the port is partitioned or segmented from the rest of the ports. This partitioning may be associated with a management function or with an error condition on the link.

COLLISION (Flashing Amber)—A momentary amber ﬂash occurs when a collision is detected on the port.

Page 43

Chapter 5

AT-3608 Connectivity

AT-3608 Modules

The AT-3608 has eight 10BASE2 ports with BNC connectors. Figure 29 shows the AT-3608 faceplate; the following sections describe the connectors in detail.

Figure 29: AT-3608 Front and

Back Panels

Cascade Capability

Port activity LEDs

ON LINE

OFF

TERMINATOR

RECEIVE

AUI

APPLIQUÉ PORT

RS-232

TERMINAL PORT

INTERREPEATER BUSFIRMWARE CASSETTE

STATUS

FAULT

MASTER

POWER

IEEE 802.3/ETHERNET 10BASE2

STATUS

POWER MASTER FAULT

Front

8 BNC connector ports

12345678

ON LINE

OFF

TERMINATOR

RECEIVE

IEEE 802.3/ETHERNET 10 BASE2 8 PORT HUB/REPEATER with Network Management

10BASE 2NETWORK PORTS 1-8

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

NORMAL/CASCADE

Back

Firmware cassette port

Interrepeater bus port

Hub status LEDs

Ports 1 through 7 are standard 10BASE2 network ports, suitable for connecting workstations or other network devices via 10BASE2 segments.

Located on the front panel and labeled NORMAL/CASCADE, Port 8 (shown in Figure 30) has been speciﬁcally designed with a cascading (uplink) capability that allows two (or more) repeaters to appear as a single repeater with supplemented ports. You can use it in the following ways:

8 PORT HUB/REPEATER

with Network Management

❑ To connect a network device, as you would any of the other ports. ❑ To extend the network to another hub through the link segment.

Page 44

AT-3608 Connectivity

CEIVE

ON LINE

RECEIVE

OFF

TERMINATOR

NORMAL/CASCADE

Figure 30: Normal/Cascade

Port

1 2 3 4 5 6 7 8

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

FOIRL NETWORK PORTS 1-8

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

RS-232

ON LINE

OFF

TERMINATOR

RECEIVE

APPLIQUÉ PORT

TERMINAL PORT

STATUS

POWER

3608

CentreCOM

FAULT

MASTER

POWER

IEEE 802.3/ETHERNET 10BASE2

MULTIPORT HUB/REPEATER

with Network Management

Normal or cascade port switch

Port 8 can be used as either a normal port or a cascading port. To be used as a normal port, Port 8 must be grounded at either the repeater or at the DTE, as recommended by IEEE speciﬁcations. Grounding is necessary because Port 8 is NOT tied to chassis ground. This means that ground loops are possible unless there is a connection to a port that has a chassis ground. In this case, Ports 1 through 7 all have chassis grounds.

Cascading through Port 8 of a single, standalone AT-3608 hub to a second AT-3608 hub effectively enables the network to consist of 14 nodes.

Figure 31: AT-3608 Cascade

Connection

If you use Port 8 to cascade hubs, therefore, you should connect the other end of the link segment to Port 1 of the second hub, as shown in Figure 31.

Port 8

12345678

ON LINE

OFF

TERMINATOR

RECEIVE

12345678

ON LINE

OFF

TERMINATOR

RECEIVE

10BASE 2NETWORK PORTS 1-8

ON LINE

OFF

TERMINATOR

RECEIVE

10BASE 2NETWORK PORTS 1-8

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

ON LINE

OFF

TERMINATOR

RECEIVE

NORMAL/CASCADE

ON LINE

OFF

TERMINATOR

RECEIVE

NORMAL/CASCADE

ON LINE

OFF

TERMINATOR

RECEIVE

AUI

APPLIQUÉ PORT

AUI

APPLIQUÉ PORT

RS-232

TERMINAL PORT

RS-232

TERMINAL PORT

STATUS

POWER

IEEE 802.3/ETHERNET 10BASE2

8 PORT HUB/REPEATER

with Network Management

IEEE 802.3/ETHERNET 10BASE2

8 PORT HUB/REPEATER

with Network Management

FAULT

MASTER

POWER

FAULT

MASTER

POWER

Port 1

Note, however, that no more than four AT-3608 hubs (with twenty-six ports) can be included in a single segment of cable. That is, it cannot violate the four-repeater rule.

The Four Repeater Rule. The IEEE 802.3 standard provides general rules for 10BASE-T cable length and network connections on single segments of cable or on point-to-point links with media attenuation and signal propagation delays. The basic rule is that the maximum number of hubs/ repeaters in the data path between any two nodes is four.

Page 45

10BASE2 Wiring Specifications

10BASE2 (or thinnet) requires a thin coaxial cable, RG58. RG58 is a 10 MHz, baseband cable connected with BNC-series connectors. The cable must be terminated with 50 Ω terminators and grounded at one end. Maximum segment length is 185 meters (606 ft.).

Thinnet coaxial cable is plugged directly into the BNC receptacle for Ports 1 through 8. Next to each of these ports is a 50 Ω termination switch. If you install a BNC-T connector with a 50 Ω resistor like the one shown in Figure 32, you must disable the ports’ internal termination by turning the switch OFF).

CentreCOM 3600 Series Hub/Repeaters

Figure 32: BNC-T at End of

10BASE2 Segment

Figure 33: BNC Connector

If you install a coaxial cable segment without a BNC-T connector at the end (as shown in Figure 33), you must enable the internal termination of the port by turning the 50 Ω termination switch ON.

Page 46

AT-3608 Connectivity

Port Status Indicators and Terminator Switch

The port status indicators on AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis. The indicators are either an individual port LED or a central indicator for box level monitoring.

Port Indicators Each 10BASE2 port supports the following indicator functions with two

single-color front panel LEDs per port, shown in Figure 34:

ON LINE (Steady Green)— Indicates that the port is not partitioned.

RECEIVE (Flashing Amber)— Indicates that the port is receiving

Ethernet packets.

Figure 34: BNC Port Detail

Terminator Switch Figure 34

also shows the location of the 50 Ω Terminator switch included at each BNC port receptacle:

OFF (disabled)—Use the OFF position if you are installing a coaxial cable segment with a BNC-T connector on this port.

ON (enabled)—Use the ON position if you are installing a coaxial cable segment without a BNC-T connector at this port and the unit is at the end of the cable. This is the default switch position.

ON LINE

OFF

TERMINATOR

RECEIVE

Terminator switch toggle

Port activity LEDs

Page 47

Chapter 6

AT-3612T Connectivity

AT-3612T Modules

The AT-3612T has 12 10BASE-T ports incorporated in a Telco 50-pin (RJ21) connector. The RJ21 50-pin Telco port on AT-3612T hub is shown in Figure 35. A pin-out table and information on attachment accessories is available in Appendix B

Figure 35: AT-3612T Front and

Back Panels

Front

Back

RJ21 Telco port activity

Port LEDs

Hub status LEDs

Firmware cassette port

Appliqué port

Interrepeater bus port

RS232 port

Page 48

AT-3612T Connectivity

Not

Hub Status Indicators

Figure 36: AT-3612T Hub

Indicators

Figure 36 illustrates the layout of the hub indicators.

STATUS

COLLISION

MASTER

FAULT

ACTIVITY

P O

E R

POWER—Green whenever power is applied.

FAULT—(OFF under normal operational conditions):

❑ Stays red for a very short time while power-on/reset diagnostics are

run; remains red if a malfunction is detected during the diagnostics.

❑ Turns red (on a Master module only) if the Master module fails; if

the Backup detects the failure, it takes over the Master function.

MASTER— Amber (on the Master module or on the Backup when it has taken over the Master module function) indicates the currently active Master module.

If the Master fails, its software may not be able to turn OFF its own Master LED; consequently, the Master LED may be illuminated on two modules. In this kind of failure, however, the original Master module’s Fault LED will also be illuminated to indicate the failure. For diagnostic purposes, the Fault LED takes precedence over the Master LED.

COLLISION —This indicator will flash whenever a collision is detected on any port.

ACTIVITY—This indicator will flash when Ethernet packets are being transmitted to any port.

Page 49

Port Status Indicators

CentreCOM 3600 Series Hub/Repeaters

The port indicators on the AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis.

The AT-3612T has a central bank of indicators, as shown in Figure 37.

PORT ACTIVITY

PORT STATUS INDICATOR ST ATUS

No Link OFF

Link

Green ON

Receiving

Green FLASHING

Partitioned

Collision

Amber ON Amber FLASHING

911

Figure 37: AT-3612T Port LEDs

10 12

Each 10BASE-T port supports the following indicator functions with one dual-color front panel LED per port. Note that the LEDs do not reﬂect real-time activity 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 easier observation.

LINK (Steady Green)—This indicates that the particular port has a valid link and is not partitioned.

RECEIVING (Flashing Green)—When a port’s LED is blinking, the port is receiving Ethernet packets.

COLLISION (Flashing Amber)—A momentary amber ﬂash occurs when a collision is detected on the port.

NO LINK (No Light)—If the Link Test function is not met by the 10BASE-T device at the opposite end of the UTP segment, 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.

Page 50

Page 51

Chapter 7

AT-3612TR Connectivity

AT-3612TR Modules

The AT-3612TR has 12 10BASE-T ports represented by 12 RJ45 connectors for UTP. Figure 38 shows the AT-3612TR faceplate; the following section describes the connectors. For information about UTP wiring, refer to Appendix A.

Figure 38: AT-3612TR Front

and Back Panels

Front

Back

RJ45 ports

Port activity LEDs

Firmware cassette port

Appliqué port

Interrepeater bus port

RS232 port

Hub status LEDs

Page 52

AT-3612TR Connectivity

RJ45 Connectors

The AT-3612TR uses 12 RJ45 connectors. Figure 39 shows a RJ45 connector.

Figure 39: RJ45 Connector

Port Indicators

Pin 1

Port indicators on AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis. The AT-3612TR provides a central bank of indicators for box-level monitoring.

As shown in Figure 40, each 10BASE-T port supports the following indicator functions with one single-color front panel LED per port:

PORT ACTIVITY

PORT STATUS INDICATOR STATUS

No Link

Receiving

13 11957

24 121068

Indicator OFF

Link

Indicator ON Indicator FLASHING

Figure 40: AT-3612TR Port

LEDs

LINK (Steady Green)—This indicates that the particular port has a valid link and is not partitioned.

RECEIVING (Flashing Green)—When a port’s LED is blinking, the port is receiving Ethernet packets.

Page 53

Chapter 8

AT-3624T Connectivity

AT-3624T Modules

The AT-3624T has 24 10BASE-T ports incorporated in two Telco 50-pin (RJ21) receptacles for UTP. Figure 41 shows the AT-3624T faceplate. A pin-out table and information on attachment accessories is available in Appendix B.

Figure 41: AT-3624T Front and

Back Panels

Front

Back

Telco (RJ21) ports

Port activity LEDs

Firmware cassette

port

AUI

port

Interrepeater

bus port

RS232 port

Hub status LEDs

Page 54

AT-3624T Connectivity

Port Indicators

Port indicators on the AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis. The AT-3624T has one dual-color LED corresponding to each numbered port connection, as shown in Figure 42. A central diagnostic key provides a ready reference to the indicator meanings:

Port activity LEDs

Figure 42: AT-3624T Port LEDs

123456789101112

10 BASE-T PORTS 1-12

10 BASE-T

PORT ACTIVITY

INDICATOR STATUS –– PORT STATUS

OFF ––––––––––––––– NO LINK ON GREEN –––––––––– LINK FLASHING GREEN –––– RECEIVING

ON AMBER ––––––––– PARTITIONED FLASHING AMBER ––– COLLISION

LINK (Steady Green)—This indicates that the particular port has a valid link and is not partitioned.

RECEIVING (Flashing Green)—When a port’s LED is blinking, the port is receiving Ethernet packets.

COLLISION (Flashing Amber)—A momentary amber ﬂash occurs when a collision is detected on the port.

Page 55

Chapter 9

INTERREPEATER BUSFIRMWARE CASSETTE

STATUS

POWER MASTER FAULT

POWERRS-232

TERMINAL PORT

APPLIQUÉ PORT

OFF ––––––––––––– NO LINK

INDICATOR STATUS ––– PORT STATUS

ON GREEN –––––––– LINK FLASHING GREEN –– RECEIVING

ON AMBER ––––––– PARTITIONED FLASHING AMBER – COLLISION

10BASE-T PORT ACTIVITY

1357911131517192123

24681012141618202224

XXX XXXX XXXX

2468 10121416 18202224

1357 9111315 17192123

3624TR

CentreCOM

IEEE 802.3/ETHERNET 10BASE-T

24 PORT HUB/REPEATER with Network Management

MDI

MDI-X

MASTER

POWER

FAULT

STATUS

IEEE 802.3/ETHERNET 10 BASE-T 24 PORT HUB/REPEATER with Network Management

3624TR

CentreCOM

AUI

Back

RJ45 ports

Port activity LEDs

AUI port RS232

port

Hub status

Interrepeater bus port

Firmware module port

MDI/MDI-X switch

Front

LEDs

AT-3624TR Connectivity

AT-3624TR Modules

The AT-3624TR has 24 10BASE-T ports represented by 24 RJ45 connectors for UTP. The ports are double stacked, in two rows of 12 ports each. Figure 43 shows the AT-3624TR faceplate; the following section describes the connectors. For information about UTP wiring, refer to Appendix A.

Figure 43: AT-3624TR Front

and Back Panels

Page 56

AT-3624TR Connectivity

RJ45 Connectors

Figure 44: RJ45 Connector

MDI/MDI-X Switch

The AT-3624TR uses 24 RJ45 connectors. Figure 44 shows a sample RJ45 connector.

Pin 1

The 24 10BASE-T RJ45 ports on the AT-3624TR are generally used for network connections between a hub and a transceiver. Network connections require a standard “straight-through” cable, meaning that a pin at one end connects to a pin with the same number at the other end.

However, you may want to use one of these ports to link one hub to another hub. This type of connection requires the signal to “crossover,” so that the TX (transmit) pin at one end connects to the RX (receive) pin at the other end. You can accomplish this in either of two ways:

❑ You can use a special cross-over cable, available commercially at

most electronic outlets.

❑ You can use a built-in MDI/MDI-X switch for internally crossing

the signal over, before it is transmitted through the cable.

ATI has incorporated an MDI/MDI-X switch into the AT-3624TR module (see Figure 45). The Medium Dependent Interface (MDI/MDI-X) switch at the upper left corner of the AT-3624TR front panel converts RJ45 Port 1 from a normal network connector into an internally crossed-over port for hub-to-hub connection:

❑ The default setting for the switch is MDI-X (standard RJ45 port). ❑ If you want to use Port 1 to connect two hubs, you must set the

switch on one, and only one, of the hubs to the MDI position.

Page 57

Figure 45: MDI/MDI-X Switch

MDI

MDI-X

CentreCOM 3600 Series Hub/Repeaters

MDI

MDI-X

1357 9111315 17192123

XXX XXXX XXXX

2468 10121416 18202224

10BASE-T PORT ACTIVITY

1357911131517192123

24681012141618202224

INDICATOR STATUS ––– PORT STATUS

OFF ––––––––––––– NO LINK

ON AMBER ––––––– PARTITIONED

ON GREEN –––––––– LINK

FLASHING AMBER – COLLISION

FLASHING GREEN –– RECEIVING

AUI

APPLIQUÉ PORT

TERMINAL PORT

STATUS

POWERRS-232

FAULT

MASTER

POWER

Switch set to enable interrepeater connection

By setting the MDI/MDI-X switch to MDI, you can connect two hubs via standard straight-through cable. The switch affects Port 1 only. You can continue to use Ports 2 through 24 for network connections via straightthrough cable, no matter which way you set the MDI/MDI-X switch.

IEEE 802.3/ETHERNET 10BASE-T

24 PORT HUB/REPEATER with Network Management

CentreCOM

3624TR

Port Indicators

If you connect a straight-through cable (or any cable for that matter) between two hubs (or any two nodes) and the network LEDs do not indicate a link condition, you can change the MDI/MDI-X switch. The hub will not be damaged if the MDI switch is in the wrong position.

The port indicators on the AT-3600 Series hub front panels provide visual diagnostic and activity information for network analysis. The AT-3624TR provides a central bank of indicators for box-level monitoring.

As shown in Figure 46, each 10BASE-T port supports the following indicator functions with one dual-color front panel LED per port:

10 BASE-T PORT ACTIVITY

1357911131517192123

24681012141618202224

Figure 46: AT-3624TR Port

LEDs

OFF ––––––––––––– NO LINK

INDICATOR STATUS ––– PORT STATUS

ON GREEN –––––––– LINK FLASHING GREEN –– RECEIVING

ON AMBER ––––––– PARTITIONED FLASHING AMBER – COLLISION

Page 58

AT-3624TR Connectivity

LINK (Solid Green)—This indicates that the particular port has a valid link and is not partitioned.

RECEIVING (Flashing Green)—When a port’s LED is blinking, the port is receiving Ethernet packets.

COLLISION (Flashing Amber)—A momentary amber ﬂash occurs when a collision is detected on the port.

Page 59

Appendix A

UTP Reference

UTP Wiring Specifications

10BASE-T requires UTP wiring capable of supporting 10 Megabit data rates. Use Level 3 or better UTP wiring throughout the 10BASE-T wiring system. The wire should be 22 to 26 AWG, 100 Ω impedance with 3 to 8 twists per foot. Typically, if a cable is ﬂat, the pairs are untwisted and will cause problems. A cable more or less round in section is likely to be twisted.

The speciﬁcations of 6 common modular cables and their applicability to 10BASE-T network use are shown in Table 5. The maximum length for 10BASE-T UTP segments is 100 meters (328 ft.).

Table 5: Usable and Unusable Twisted Pair Cable

Cable

Level

1 Unshielded untwisted N/A CCITT N/A NO!

2 Individual UTP 100 Ω ± 30 Ω RS232 1BASE5

3 Typical Individual UTP 100 Ω ± 15 Ω TI, AT&T ISDN

4 Enhanced Individual UTP 100 Ω ± 30 Ω EIA, TIA

5 Individual STP 100 Ω ± 30 Ω EIA, TIA

IBM

Type 1

Cable Description AC Character Speciﬁcation

AT&T PDS

10BASE-T

IBM Type 3

10BASE-T

NEMA

10BASE-T

Individual STP 150 Ω PCC FT 1 N/A NO!

Twist/

Foot

N/A NO!

3-5 YES

5-8 YES

8-10 YES

10BASE-T

OK?

Page 60

UTP Reference

UTP Hub-to-MAU

Figure 47: RJ45

Wiring

Figure 47 shows a UTP cable with an RJ45 connector. For a 10BASE-T link between a hub and a Medium Attachment Unit (MAU) or Network Interface Controller (NIC), the cable is wired straight-through. That is, an RJ45 receptacle at the hub would wire pin-to-pin to the RJ45 receptacle at the MAU, as shown in Figure 48.

Pin 1

Pair twisted as per Level 3, 4 or 5 cable.

RJ45 Pin

1 2 3 4 5 6 7 8

TD+

TD-

RD+

Not Used

RD-

Not Used

TD+

TD-

RD+

Not Used

RD-

Not Used

RJ45 Pin

1 2 3 4 5 6 7 8

Figure 48: Hub-to-MAU

Wiring (A) Usable and (B) Unusable

TD+

TD-

RD+

Not Used

RD-

Not Used

RJ45 Pin

1 2 3 4 5 6 7

This cable will not work for 10BASE-T. Note that 3 and 6 are twisted, but are not a pair.

RJ45 Pin

1 2 3 4 5 6 7 8

TD+

TD-

RD+

Not Used

RD-

Not Used

Page 61

CentreCOM 3600 Series Hub/Repeaters

UTP MAU-to-MAU,

Hub-to-Hub Wiring

Figure 49: Hub-to-Hub or

MAU-to-MAU Wiring

10BASE-T MAU-to-MAU or hub-to-hub wiring generally requires a crossover cable located somewhere along the UTP cable run. This may commonly occur at the punch-down block or between the RJ45 wall receptacle and the workstation. See Figure 49.

RJ 45 Pin

TD+

TD-

RD+

Not Used

RD-

Not Used

TD+

TD-

RD+

Not Used

RD-

Not Used

RJ 45 Pin

1 2 3 4 5 6 7 8

Pair twisted as per level 3, 4 or 5 cable

Page 62

Page 63

Appendix B

Telco Reference

Wiring Specification

50-Pin Telco

Receptacle

Figure 50: 50-Pin Telco

Receptacle

The RJ21 50-pin Telco receptacle on the AT-3612T and AT-3624T Repeaters is conﬁgured as shown in Figure 50.

RD + TD +

RD - TD -

Table 6 on page 52 gives a pin-out chart for the Telco connector.

26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

1234567 8 9 10111213141516171819202122232425

Page 64

Telco Reference

Table 6: 50-Pin Telco Pin-Out

50-Pin

Connector

Pin Number

26 1 W-BL 1 RCV POS 1

1 2 BL-W 1 RCV NEG 2

27 3 W-OR 1 XMT POS 3

2 4 OR-W 1 XMT NEG 6

28 5 W-GR 2 RCV POS 1

3 6 GR-W 2 RCV NEG 2

29 7 W-BR 2 XMT POS 3

4 8 BR-W 2 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

Punch-

Down Block

Pin Number

Cable Color

Code

Link

Designation

Hub

8-Pin Modular Jack Pin

Numbers

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

13 26 GR-BK 7 RCV NEG 2

39 27 BK-BR 7 XMT POS 3

14 28 BR-BK 7 XMT NEG 6

NOTE 1. Cable colors may be different from those represented here depending on the

cable manufacturer.

Page 65

CentreCOM 3600 Series Hub/Repeaters

Table 6: 50-Pin Telco Pin-Out (Continued)

50-Pin

Connector

Pin Number

40 29 BK-SL 8 RCV POS 1

15 30 SL-BK 8 RCV NEG 2

41 31 Y-BL 8 XMT POS 3

16 32 BL-Y 8 XMT NEG 6

42 33 Y-OR 9 RCV POS 1

17 34 OR-Y 9 RCV NEG 2

43 35 Y-GR 9 XMT POS 3

18 36 GR-Y 9 XMT NEG 6

44 37 Y-BR 10 RCV POS 1

19 38 BR-Y 10 RCV NEG 2

45 39 Y-SL 10 XMT POS 3

20 40 SL-Y 10 XMT NEG 6

46 41 V-BL 11 RCV POS 1

PunchDown Block Pin Number

Cable Color

Code

Link

Designation

Hub

8-Pin Modular Jack Pin

Numbers

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.

Page 66

Telco Reference

Accessories

50-Pin Telco-to-RJ45

Octopus Cables

50-Pin Telco-to-RJ45

Harmonica

Figure 51: AT-ADAPT-2

Telco-to-RJ45 Harmonica Adapter for AT-3612T

The 10BASE-T ‘octopus’ cable breaks out the AT-3612T or AT-3624T Hub 50-pin Telco connector to individual RJ45 connectors. This is an ideal method for connecting into a patch panel in the wiring closet. Patch panels allow for easy conﬁguration and reconﬁguration of house wiring requirements.

When you purchase an octopus cable, ensure that it is wired for 10BASE-T and that Level 3 UTP is used. This will help maintain 10 megabit data integrity throughout the wiring system. “Silver Satin” ﬂat cable is out of speciﬁcation and should not be used.

ATI offers a harmonica adapter, Model AT-ADAPT-2. The harmonica-style adapter shown in Figure 51 allows direct conversion from the 50-pin Telco connector to RJ45 receptacles. There are many different standards for the pinout of the harmonica adapter. Ensure that the pin-out of the adapter you use complies with the 10BASE-T wiring speciﬁcation. Refer to Table B for the pinout of the Telco connector for the AT-3612T if you order a 10BASE-T harmonica adapter from a wiring vendor other than ATI.

Page 67

Appendix C

IEEE 802.3 Quick Primer

10BASE-T

10BASE-T UTP media was implemented to reduce Ethernet wiring costs. UTP wiring is installed in most buildings for telephone systems. Care must be taken to ensure that the UTP wiring used for 10BASE-T is able to carry the high Ethernet data rates before a 10BASE-T network solution is implemented.

Unlike coaxial Ethernet, 10BASE2 and 10BASE5, 10BASE-T UTP is point-to-point wiring. Typically, one end is connected to an Ethernet 10BASE-T NIC or transceiver (MAU) and the other end is connected to a 10BASE-T hub (repeater). Straight-through cabling pin-out is used for hub-to-MAU connections. Hub-to-hub and MAU-to-MAU connections are allowed using a UTP cable with a cross-over function crossing TD+ and TDwith RD+ and RD- signals. No other attachments are allowed along the length of the UTP wire; however, wiring patch panels and punch-down blocks is allowed for interconnecting segments. The cable should be at least Level 3 UTP, 100 Ω impedance, 22 to 26 AWG, and should not exceed 100 meters (328 ft.) in length from one end to the other. See Table 5 in Appendix A for comparison of different UTP cables.

Four-Repeater Rule Up to four repeater/hub units may be connected, for a total of ﬁve segments,

provided that two of the segments are link segments. Link segments (such as ﬁber) have no MAU attachments. If all segments are coax segments having MAU attachments, a maximum of two repeater/hub units and three segments is allowed.

Page 68

IEEE 802.3 Quick Primer

10BASE-FL/FOIRL Ethernet

The IEEE 802.3 10BASE-FL standard supports up to 2,000 meters (6,560 ft.) of multimode duplex ﬁber optic cable in a point-to-point link which directly attaches two devices. FL is compatible with FOIRL, but FOIRL supports connections of 1,000 meters (3,280 ft.). Duplex refers to support for ﬁber optic cable pairs, enabling a two-cable ﬁber optic connection with transmit mode dedicated to one cable and receive mode on the other. The wide dynamic range of a ﬁber optic interface allows for an easy installation. When connecting ﬁber optic cable, the receiving pin (RD) is connected to the transmitting pin (TD) and vice versa.

10BASE2 (Thin) Ethernet

When conﬁguring thin coax segments, IEEE 802.3 speciﬁcations allow up to 30 MAU attachments per cable segment spaced at no less than 0.5 meters (1.64 ft.) apart and with a cable length less than or equal to 185 meters (606 ft.) per segment. The worst case propagation delay for a 185 meter (606 ft.) thin Ethernet segment is 950.9 ns. The propagation delay for thin (10BASE2) Ethernet cable is 5.14 ns/meter. Both ends of the segment must be terminated with a 50 Ω termination with a power rating of 0.5 watts or greater. The segment shield must be earth grounded only at one point on the cable.

10BASE5 (Thick) Ethernet

When conﬁguring 10BASE5 coax segments, IEEE 802.3 speciﬁcations allow 100 MAU attachments or less, spaced at multiples of 2.5 meters (8.2 ft.) measured accurately from the cable end (50 Ω terminator included). The 10BASE5 cable segment cannot exceed 500 meters (1640 ft.) in length. Worstcase end to end propagation delay of a 10BASE5 coax segment is 2165 ns. Propagation delay of 10BASE5 Ethernet coax is calculated at 4.33 ns/meter. Both ends of the segment must be terminated with a 50 Ω termination with a power rating of 0.5 watts or greater. Earth grounding of the segment shield must take place only at 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 Drop cables may have a maximum 257 ns propagation delay, as used for computing the worst case propagation delay of a cable system. AUI cable propagation delay is approximately 5.13 ns/meter.

This cable internally consists of four shielded twisted pair wires with an overall shield and drain wire; a 15-pin D-shell male connector at one end and a 15-pin D-shell female connector at the other end. Cable impedance is nominally 78 Ω. The AUI cable typically connects a transceiver attached to a coaxial segment to a DTE (workstation).

Page 69

Propagation

CentreCOM 3600 Series Hub/Repeaters

Propagation delay is the time it takes a signal to travel from the input of a system component to the output and is usually measured in nanoseconds. IEEE 802.3 has speciﬁc propagation delay maximums for the Ethernet components. Cable length plays a major role; i.e., a 50 meters (164 ft.) AUI cable has a maximum propagation delay of 257 ns. The propagation delay of cable depends on the length and velocity factor of the cable type.

Round-trip propagation delay throughout the entire cable system, from farthest ends, may not exceed 51.7 µs, ± 4 µs.

Page 70

Page 71

Appendix D

Glossary

10BASE2—Also called thin Ethernet, thinnet or CheaperNet, a 10 MHz baseband specification. Cable impedance is 50 Ω and maximum coaxial segment length is 185 meters (607 ft.).

10BASE5—Also called thick Ethernet, a 10 MHz baseband specification. Cable impedance is 50 Ω and maximum coaxial segment is 500 meters (1,640 ft.). The cable is commonly referred to as yellow cable. Thick Ethernet cable is typically used as a trunk or backbone path of the network.

10BASE-FL—IEEE 802.3 Fiber Optic Ethernet. A fiber optic standard that allows up to 2,000 meters (6,560 ft.) of multimode duplex fiber optic cable in a point-to-point link.

10BASE-T—IEEE 802.3 UTP Ethernet. Low-cost Level 3 or better UTP wiring affords 100 meters (328 ft.) of point-to-point link segments. UTP uses RJ45 connectors and sometimes 50-pin Telco connectors to a patch panel and runs at 10 MHz.

50-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.

AT-ADAPT-2— A harmonica-style adapter that allows direct conversion from a 50-pin Telco connector to RJ45 receptacles.

ATTACHMENT UNIT INTERFACE (AUI)—Connection between a MAU (transceiver) and a DTE (typically a workstation). Includes a 15-pin D-sub connector and sometimes a 15-conductor twisted pair cable. Maximum length is 50 meters (164 ft.).

BACKUP MODULE— A repeater that behaves as the management module when the Master fails in a department concentrator.

BASEBAND COAXIAL SYSTEM—A system whereby information is directly encoded and impressed on the coaxial transmission medium. At any point on the medium, only one information signal at a time can be present without disruption.

Page 72

Glossary

BAYONET NUT COUPLE (BNC) CONNECTOR—A 10BASE2 thin coax connector with push-on BNC locking lug that quickly locks into place with a half twist.

BIT RATE (BR)—The rate of data throughput on the medium in bits per second. Ethernet specifies 10 million bits per second.

BIT TIME—The duration of one bit symbol (1/BR). Ethernet specifies a bit time of 100 ns.

CARRIER SENSE—In a LAN, an ongoing activity of a data station to detect whether another station is transmitting.

CARRIER SENSE MULTIPLE ACCESS with COLLISION DETECT (CSMA/CD)—This is the access method employed by IEEE 802.3 LAN

transceivers, by which multiple stations compete for use of the transmission medium (coax cable) for data packet transmission. It provides for a level of error detection should that transmission be corrupted or impeded by contention for the transmission medium.

COAX SEGMENT—A segment of Ethernet cable that contains MAUs.

COAXIAL CABLE—A two-conductor (center conductor, shield system),

concentric, constant impedance transmission line used as the trunk medium in the baseband system.

COAXIAL CABLE SEGMENT—A length of coaxial cable sections and coaxial connectors, terminated at each end in its characteristic impedance.

COLLISION—An unwanted condition that results from concurrent transmissions on the physical medium.

COMPATIBILITY INTERFACE—The MDI coaxial cable interface and the AUI branch cable interface, the two points at which hardware compatibility is defined to allow connection of independently designed and manufactured components to the baseband transmission system.

CROSSOVER—Wiring used when connecting a 10BASE-T MAU to another 10BASE-T MAU or a 10BASE-T hub to another 10BASE-T hub. For example, one 10BASE-T MAU has the TD pair on the same pins as another 10BASE-T MAU. If pins were wired straight, there would be two transmitters on one pair and no receiver. As a solution, the crossover cable crosses the TD pair with the RD pair, to connect the TD pins on one end to the RD pins at the other end.

D-SUB CONNECTOR—The AUI cable uses 15-pin D-sub connectors. “D” refers to the shape of the connector shell. Also called miniature D, DB15, or DIX connectors.

DATA COMMUNICATION EQUIPMENT (DCE)—In RS-232 specification, a module, such as a modem, for connecting a DTE to other equipment. A repeater connected to a terminal or workstation for OMEGA management use is wired as a DCE.

DATA TERMINAL EQUIPMENT (DTE)—In RS-232 specification, a module typically at the end of a segment (i.e., uninterrupted length of Ethernet cable). The DTE could be an Ethernet workstation, repeater or bridge.

DEPARTMENT CONCENTRATOR—Hub that provides a large number of workstation connections. The term department concentrator refers to multiple repeaters housed in an AT-36C8 chassis. See Hub/Repeater, Repeater.

Page 73

CentreCOM 3600 Series Hub/Repeaters

DIX CONNECTOR—See D-Sub Connector

FOIRL — A fiber optic standard that allows up to 1,000 meters (3,280 ft.) of

multimode duplex fiber optic cable in a point-to-point link.

HARMONICA ADAPTER—This adapter provides a simple way to convert the 50-pin Telco connection to RJ45 connections. See AT-Adapt-2.

HEARTBEAT—See SQE

HOT SWAPPING— The process of replacing a hub module without bringing

down the network. This process occurs by sliding an active module into a fully powered up concentrator, replacing a failed module.

HOUSE WIRING—House wiring is the existing wiring inside a building. This wiring generally originates from one or more wiring closets, such as a telephone room. Some older buildings may have wiring unsuitable for 10 megabit data rates. In these circumstances, it is recommended that the wiring be tested with a 10BASE-T signal/wire 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—UTP cables for 10BASE-T hub-to-MAU or NIC cards

are wired straight-through. An RJ45 receptacle at the hub would wire pin-to-pin to the RJ45 receptacle at the MAU.

IMPEDANCE—An electrical characteristic of a circuit dealing with the combination of the AC and DC resistance and the appearance of that resistance to attached circuits.

JABBER LOCK-UP—The MAU’s ability to automatically inhibit the transmit data from reaching the medium if the transmit data time exceeds a specified duration. This duration is in the range of 20 ms to 150 ms. Jabber lock-up protects the medium from being overrun with data packets from a possibly defective device.

JAM—This is a term used to describe the collision reinforcement signal output by the repeater to all ports. The jam signal consists of 96 bits of alternating 1s and 0s. The purpose is to extend a collision sufficiently so that all devices cease transmitting.

JITTER—The shift of the data bit in respect to a standard clock cycle. Jitter is undesirable and must be minimized.

LINK SEGMENT—The link segment of coaxial cable is a segment that has no MAU devices, but links together two LAN devices such as repeaters.

LINK TEST—In 10BASE-T Ethernet there is a link test function that validates the UTP link. This consists of a pulse transmitted from point A on one pair that is validated at point B. Point B also transmits a pulse on the second pair to be validated by point A. These pulses occur during media idle states (in between packets).

Page 74

Glossary

MANAGED MODULE— An intelligent repeater in a department concentrator chassis that makes management data available to the Master.

MANAGEMENT AGENT—Software that is used to view hub activity and set hub variables.

MASTER—A repeater in the topmost position in a department concentrator chassis that contains and downloads the management agent software to Backup and Slaves. The Master contains the only active image of the management agent and controls the management functions of the Backup and Slaves.

MAU—See Medium Attachment Unit

MAU-to-MAU, HUB-to-HUB WIRING—10BASE-T MAU-to-MAU or hub-to-

hub wiring generally requires a crossover cable located somewhere along the UTP cable run. This may commonly occur at the punch-down 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 device.

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 INTERFACE (MDI)—The mechanical and electrical interface between a hub and a transceiver (MAU). MDI-X is another version of the interface that enables hubs to connect using different pin-outs, thereby avoiding conflicts that occur when receiving and transmitting packets use the same pin-out.

MODULE—A single repeater when it is mounted with other repeaters in an AT-36Cx or AT-36Ex department concentrator chassis.

N-SERIES—A barrel shaped, threaded connector used on 10BASE5 (thick Ethernet) coaxial cable.

PATCH PANEL—A 10BASE-T patch panel may be used between a punch-down block and UTP workstation. The patch panel generally has a female RJ45 connector on the front for each workstation and a Telco (RJ21) connector on the back, which is wired to a punch-down block. This provides a convenient way for the installer or network manager to connect the hub 10BASE-T ports into the desired building locations.

POLARITY CORRECTION—Many 10BASE-T UTP ports have a polarity correction function. If the UTP wiring has RD- and RD+ inadvertently crossed, the polarity correction function will sample the signal and electrically swap the wires. If the TD- and TD+ wires are crossed, the correction would occur at the MAU on the other end of the UTP link. This occurs within a single pair and should not be confused with the crossover cable.

PROPAGATION DELAY—The time it takes a signal to travel from the input of a system component to the output. Usually measured in nanoseconds. IEEE 802.3 has specific propagation delay maxima for computing propagation budgets when designing a LAN. Cable length plays a major role in propagation delay; for example, a 50-meter (164-foot) AUI cable has a maximum allowable propagation delay of 257 ns. The propagation delay of cable depends on the length and velocity factor of the cable type. There are also propagation delays associated with electronics attached to the system.

Page 75

CentreCOM 3600 Series Hub/Repeaters

PUNCH-DOWN BLOCK—The punch-down block is the wiring panel where the house wiring from the building’s offices terminates. This is where many 10BASE-T hubs would be located. Wiring installers use a special punch-down tool 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—This connector is a 10BASE-T standard for connecting UTP cabling. It is inexpensive and easy to install onto UTP cable.

SIGNAL QUALITY ERROR (SQE)—Also referred to as Collision or Collision Presence. This occurs when two devices attempt to transmit at the same time, which is an illegal condition. All ATI transceivers test for SQE.

SIMPLE NETWORK MANAGEMENT PROTOCOL (SNMP)— SNMP is a TCP/IP protocol that generally uses the User Datagram Protocol (UDP) to exchange messages between a management information base and a management client residing on a network. Since SNMP does not rely on the underlying communication protocols, it can be made available over other protocols, such as XNS or DECnet.

SLAVE— A repeater that behaves as a “dumb” module managed by a Master in a department concentrator chassis. Slaves operating standalone perform only simple regeneration and retiming tasks associated with repeating and are not manageable.

SQE TEST—Commonly referred to as Heartbeat, is a special 802.3 signal sent by the MAU to the DTE to test the collision detection function. Some DTE want SQE and others do not. Repeaters do not want the SQE Test.

STANDALONE—Repeater operating as a hub on its own; i.e., not a module among other modules in a department concentrator chassis.

STRAIGHT-THROUGH—A type of wiring connection where the pins of one connector interface with the same pins of another connector. For example, pin 1 of one connector connects to pin 1 of another connector.

SUBSCRIBER CHANNEL (SC) CONNECTOR—A type of port connection where the pins connect through a square push-pull mating interface.

SUB MINATURE ASSEMBLY (SMA) CONNECTOR—A type of port connection where the pins connect through a threaded attachment interface. (Also

referred to as an SM Connector.)

STRAIGHT TIP (ST) CONNECTOR—A type of port connection where the pins connect through a bayonet-style interface.

TCP/IP PROTOCOLS—A set of protocols for intercomputer communication, including network level (Internet Protocol), transport level (Transmission Control Protocol or TCP) and application level protocols (for example, Telnet terminal emulation). TCP/IP has been used for many years in two country-wide networks, the ARPANET and MILNET. Recently, TCP/IP has become very popular with users of a variety of multi-user computer systems and engineering workstations. Most UNIX computers use TCP/IP over Ethernet as the main intercomputer networking technology. TCP/IP is also popular among PC users, particularly as a means of communication with large multi-user computers.

Page 76

Glossary

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 coaxial cable used to distribute signals over long

distances throughout a cable system.

UNMANAGED MODULE— A repeater that behaves as a “dumb” repeater in a department concentrator chassis (i.e., without a Master). It performs simple repeating tasks like packet retiming and regeneration, but is not managed.

UNSHIELDED TWISTED PAIR (UTP)—A cable used in 10BASE-T wiring that consists of at least two twisted pairs of 22 to 26 AWG wire. The pairs should have at least 3 twists per foot and have an impedance of 100 Ω. Level 3, Level 4 and Level 5 UTP cables fit these criteria.

Page 77

Appendix E

Technical Support Fax Order

Name___________________________________________________________________

Company ________________________________________________________________

Address _________________________________________________________________

City ____________________State/Province____________ Zip/Postal Code __________

Country _________________ Phone __________________Fax ____________________

Incident Summary

Model number of Allied Telesyn product I am using _____________________________ Firmware release number of Allied Telesyn product _____________________________ Other network software products I am using (e.g., network managers) ________________________________________________________________________ Brief summary of problem __________________________________________________ ________________________________________________________________________ Conditions (List the steps that led up to the problem.) ___________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________

________________________________________________________________________

Detailed description (Please use separate sheet)

Please also fax printouts of relevant files such as batch files and configuration files. When completed, fax this sheet to the appropriate ATI office. Fax numbers can be found on page 69.

Page 78

Page 79

Appendix F

CentreCOM AT-3600 Manual Feedback

Please tell us what additional information you would like to see discussed in the manual. If there are topics you would like information on that were not covered in the manual, please photocopy this page, answer the questions and fax or mail this form back to Allied Telesyn International (ATI). The mailing address and fax number are at the bottom of the page. Your comments are valuable when we plan future revisions of the manual.

On a scale of 1 to 10 (10 being most important), rate the importance of the following topics in this manual:

Hardware Installation _______ Hub Management ______ Diagnostics _______ MIB ______ SNMP Software _______ Troubleshooting ______ IEEE 802.3 Quick Primer _______ Reading the LEDs ______ Cabling _______ Telnet Communication ______ Software Downloading _______

I found the following the most valuable ______________________________

_________________________________________________________________

I would like the following more developed ___________________________

_________________________________________________________________

I would ﬁnd the manual more useful if _______________________________

_________________________________________________________________

Please fax or mail your feedback. Fax to 1-206-481-3790. Or mail to:

Allied Telesyn International Technical Publications Department

19015 North Creek Parkway Suite 200 Bothell, WA 98011 USA

Page 80

Page 81

Appendix G

Where To Find Us

For Technical Support or Service

Location Phone Fax

North America

United States, Canada, Mexico, Central America, South America, Australia, New Zealand

France

France, Belgium, Luxembourg, The Netherlands, Middle East, Africa

Germany

Germany, Switzerland, Austria, Eastern Europe

Italy

Italy, Spain, Portugal, Greece, Turkey, Israel

United Kingdom

United Kingdom, Denmark, Norway, Sweden, Finland, Iceland

Japan (+81) 3-3443-5640 (+81) 3-3443-2443

Asia

Singapore, Taiwan, Thailand, Malaysia, Indonesia, Korea, Philippines, China, India

Hong Kong (+852) 2-529-4111 (+852) 2 529-7661

Technical Bulletin Board Service 1 (206) 483-7979

CompuServe Go ALLIED

Internet (ftp) ftp://gateway.centre.com

World Wide Web http://www.alliedtelesyn.com

1 (800) 428-4835 1 (206) 481-3790

(+33) 1-69-28-16-17 (+33) 1-69-28-37-49

(+01) 30-83-56-66 (+49) 30-435-70-650

(+39) 2-38093-444 (+39) 2-38093-448

(+0) 800-20-40-40 (+44) 1-865-390-002

(+65) 383-2050 (+65) 383-2079

For Information Regarding Allied Telesyn International Corp.

Allied Telesyn International Corp.

19015 North Creek Parkway Suite 200 Bothell, WA 98011 Tel: 1 (800) 424-4284 or 1 (206) 487-8880 Fax: 1 (206) 489-9191

Allied Telesyn International Corp.

950 Kifer Road Sunnyvale, CA 94086 Tel: 1 (800) 424-4282 (USA and Canada) Fax: 1 (408) 736-0100

United States Lilburn, GA

Tel: (404) 717-0290, Fax: (404) 717-0806

Salt Lake City, UT

Tel: (801) 350-9130, Fax: (801) 350-9051

Vienna, V A

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, Fax: (619) 279-3897

Clearwater, FL

Tel: (813) 726-0022, Fax: (813) 726-0234

For Sales Information

Tunnersville, NJ

Tel: (609) 438-1070, Fax: (609) 468--1201

Canada Mississauga, Ontario

Tel: (905) 803-8626, Fax: (905) 279-0050

Richmond, British Columbia

Tel: (604) 244-0678, Fax: (604) 270-3644

Germany Berlin

Tel: (+49) 30-435-9000, Fax: (+49) 30-435-70650

Freising

Tel: (+49) 8161-62-002, Fax: (+49) 8161-68-374

Lothar Bahn The Netherlands

Schiphol

Tel: (+31) 20-654-0111, Fax: (+31) 20-654-0270

Italy Milano

Tel: (+39) 2-38093-444, Fax: (+39) 2-38093-448

England Abingdon, Oxon

Tel: (+1) 44-865-390001, Fax: (+1) 44-865-390002

France Les Ulis

Tel: (+33) 1-69-28-16-17, Fax: (+33) 1-69-28-37-49

Hong Kong Kowloon

Tel: (+852) 2-393-0101, Fax: (+852) 2-397-7979

Wanchai

Tel: (+852) 2-529-4111, Fax: (+852) 2-529-7661

Singapore

Tel: (+65) 383-3832, Fax: (+65) 383-3830

Japan Shinagawa-ku, T okyo

Tel: (+81) 3-3443-5640, Fax: (+81) 3-3443-2443

Yodogawa-ku, Osaka

Tel: (+81) 6-391-6310, Fax: (+81) 6-391-6325

Fujisawa-shi, Kanagawa

Tel: (+81) 466-88-8510, Fax: (+81) 466-88-8515

Machida-shi, T okyo

Tel: (+81) 427-21-8141, Fax: (+81) 427-21-8848

Nagoya-shi, Aichi

Tel: (+81) 52-223-3791, Fax: (+81) 52-223-3736

Page 82

Page 83

Appendix H

Index

accessories 54 adapters

AT-ADAPT-2 54, 59 harmonica 61 harmonica-style 54 octopus 54

Telco 50-pin/RJ45 61 Application-Specific Integrated Circuit (ASIC) 2 appliqué port 2 ASYNC ASCII terminal port 2 AT-3608

on line 34

receive 34 Attachment Unit Interface (AUI) 2, 4, 59 AUI drop cables 56

baseband coaxial system 59 Bayonet Nut Couple (BNC) 3 bit rate 60 bit time 60 Boot Protocol (BootP) 6 Bulletin Board System (BBS) 6

cable color 52 Cable colors 52, 53 cabling

10BASE2 2, 3, 11, 17, 33, 55, 59, 60

10BASE5 2, 55, 56, 59

10BASE-FL 3, 11, 17, 21, 25, 56, 59

10BASE-T 2, 3, 11, 12, 17, 19, 35, 37, 40, 41, 42, 44, 45,

46, 47, 48, 49, 54, 55, 59, 60

cross-over 44, 49, 55, 60

data-grade 19

fiber optic length 22, 28

fiber segment length 22, 27

FOIRL 3, 25, 56, 61

impedance 59, 61

point-to-point 55

silver satin 19 straight-through 44, 48, 55, 63 UTP 37, 39, 40, 42, 43, 47, 49, 55 voice-grade 19

carrier sense 60 Carrier Sense Multiple Access with Collision Detection

(CSMA/CD) 3, 60

chassis

department concentrator 1, 3, 7, 11 desktop 1, 3, 7

rackmount 1, 3 coax segment 60 coaxial cable 60 coaxial cable segment 60 compatibility interface 60 compliance

IEEE 802.3 1, 2, 3, 56, 57, 59, 60 configuration

managed hub 7

standalone 7, 63 connectivity 3

AT-3606F 21, 25

AT-3606F/SMA 21

AT-3608 31

AT-3612T 35

AT-3612TR 39

AT-3624T 41

AT-3624TR 43 connectors

50 pin Telco 51

50-pin Telco 35, 54, 59, 61

bayonet nut couple connector 60

BNC 11, 31

BNC-T 32, 33

DIX 61

D-sub 60

N-series 62

RJ21 3, 11, 41

RJ45 3, 11, 39, 43, 44, 48, 59, 61, 63

SMA 13, 14, 15, 16, 17, 21, 22, 23, 25, 28, 29

ST 11, 17, 21, 22, 25, 28

Page 84

Index

Telco 50-pin 3, 35, 41 UTP 41, 46

cover panels

AT-3606F 21, 26, 27 AT-3608 31, 32 AT-3612T 35, 41 AT-3612TR 2, 13, 39, 43

cross-over UTP wiring 49

Data Communication Equipment (DCE) 60 Data Terminal Equipment (DTE) 59, 60 DB9 11 department concentrator 59, 60 diagnostics

LEDs 2

EIA standard 11 Ethernet 59

fiber optic 56, 59 Fiber Optic Inter-Repeater Link (FOIRL) 2 firmware cassette

AT-S4 6 firmware cassette slot 17 four repeater rule 55

glossary 59

harmonica adapter 61 hot swapping 10, 61 hub 1, 19, 52

activity 36

collision 36

fault 36

master 36

power 36 Hub MIB 1 hub/repeater 61 hybrid cable 22, 28

IEEE 802.3 propagation specification 57 indicator

collision 60

heartbeat 61

link 8

link test 61 indicators 24, 30, 34, 36, 37, 40, 42, 46

activity 8, 10

AT-3608 34

fault 18

hub status 18, 36

link 10, 19, 22, 28

master 18

port 18, 23, 29, 37, 40, 41, 45

power 8, 10, 18

installation

hardware 7 power 7 ventilation 7

interrepeater bus connector 17

jabber lock-up 61 jam 61 jitter 61

LAN 60 LEDs

diagnostic 2 hub 18

link segment 61

manageable hub/repeater 1 managed module 62 management

RS232 11 SNMP 2

management agent 62, 63

OMEGA 2, 11

Management Information Base (MIB) 1 management software

upgrades 6 Master 36 MAU/transceiver 62 MDI/MDI-X 62 MDI/MDI-X Switch 44 MDI-X 44 Medium Attachment Unit (MAU) 48, 49, 55, 62 Medium Dependent Interface (MDI) 44, 62 micro transceivers

AT-210T 17

AT-MX10 17

AT-MX25F 17

AT-MX26F 17 module 62

backup 59

master 62

slave 63 modules

AT-3606 4

AT-3606F 3, 21, 22, 25, 27

AT-3606F/SMA 4, 21

AT-3608 3, 4, 5, 8

AT-3612T 3, 4, 35, 37, 51, 54

AT-3612TR 3, 4, 39, 40

AT-3624T 4, 41, 51, 54

AT-3624TR 3, 4, 43, 44, 45

AT-3624TRS 1, 5

AT-3624TS 5

backup 4, 18, 36

hot swapping 2

master 4, 18, 36

slave 1, 4

slaves 4

Page 85

Index

Network Interface Controller (NIC) 48 network management 5

OMEGA 5

patch panel 54, 62 polarity correction 62 port

collision 30, 37, 42, 46 link 37, 40, 42, 46 no link 37, 40, 42, 46 on line 24, 30 partitioned 30, 37, 42, 46 receive 24, 30 receiving 37, 40, 42, 46

ports

appliqué 2 AUI 11 network 11 RS232 terminal 11

power supply

export 13

U.S.A. 13 propagation delay 56, 62 punch-down block 52, 63

receiving

receiving pin (RD) 56 repeater 59, 62, 63 Repeater MIB 1 repeater software

upgrading from cassette 2

upgrading from download 2, 6 RJ45 connectors 3 RS232 DB25 11 RS232 terminal port 13 rubber feet 9

Signal Quality Error (SQE) 63 silver satin 54

Simple Network Management Protocol (SNMP) 1, 6, 63

management 2 SQE test 63 status indicators 17 Straight Tip (ST) 3, 25 straight-through UTP wiring 48 Sub Miniature Assembly (SMA) 3

TCP/IP protocols 63 Telco connector 64 termination 56 terminator switch 34

off 34

on 34 transceiver

appliqué 11 transmitting

transmitting pin (TD) 56 Trivial File Transfer Protocol (TFTP) 6

unmanaged module 64 Unshielded Twisted Pair (UTP) 2, 64 upgrading repeater software 6 UTP 19, 59 UTP specification 55

wiring 2, 3, 11, 12, 17, 19, 21, 22, 25, 27, 28, 33, 35, 37, 39, 40,

41, 42, 43, 44, 45, 46, 47, 48, 49, 54, 55, 56, 59, 60, 61, 63

10BASE2 termination 33

cross-over UTP 49

house wiring 61

hub-to-hub 61

hub-to-MAU 61

hub-to-MAU UTP 48

MAU-to-MAU UTP 49

MAU-to-MAU UTP, hub-to-hub 62

rules 17

straight-through UTP 48

thick Ethernet 64

thin Ethernet 64

trunk cable 64

Page 86

Allied Telesis AT-3608, AT-3606F/SMA, AT-3612T, AT-3612TR, AT-3624T Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Electrical Safety and Installation Requirements

Table of Contents

Overview

CentreCOM AT-3600 Series Hubs

Features

Connectivity

Chassis Configuration

Network Management Planning

MAC Address All “intelligent” ATI hubs (those with management capabilities) require a

Further Information

Hardware Installation

Site Preparation

Location A manageable AT-3600 Series hub can operate as a standalone product,

Ventilation The site must have adequate ventilation to provide an operating

Installing Hubs

Power Power connections for each unit should be able to provide 50 watts at

AT-3600 Port Configurations

RS232 Terminal Port All AT-3600 Series manageable hubs include an RS232 Terminal Port on

Appliqué Ports AT-3600 Series hub models feature a variety of port counts and support a

Appliqué Installation Procedures

External Transceivers Another option is to conﬁgure the AT-3600 AUI network port for other

Back Panel Features

LED Displays

Hub Status Indicators The LEDs shown in Figure 17 appear on the back panel of each AT-3600

Troubleshooting the Installation

AT-3606F and AT-3606F/SMA Connectivity

AT-3606F and AT-3606F/SMA Modules

Fiber Optic (10BASE-FL) Wiring Specifications

Port Indicators

AT-3606F/SM, SC, ST Connectivity

Fiber Optic Ports

Port Indicators

AT-3608 Connectivity

AT-3608 Modules

Cascade Capability

10BASE2 Wiring Specifications

Port Status Indicators and Terminator Switch

Port Indicators Each 10BASE2 port supports the following indicator functions with two

Terminator Switch Figure 34

AT-3612T Connectivity

AT-3612T Modules

Hub Status Indicators

Port Status Indicators

AT-3612TR Connectivity

AT-3612TR Modules

RJ45 Connectors

Port Indicators

AT-3624T Connectivity

AT-3624T Modules

Port Indicators

AT-3624TR Connectivity

AT-3624TR Modules

RJ45 Connectors

MDI/MDI-X Switch

Port Indicators

UTP Reference

UTP Wiring Specifications

Telco Reference

Wiring Specification

Accessories

IEEE 802.3 Quick Primer

10BASE-T

Four-Repeater Rule Up to four repeater/hub units may be connected, for a total of ﬁve segments,

10BASE-FL/FOIRL Ethernet

10BASE2 (Thin) Ethernet

10BASE5 (Thick) Ethernet

AUI Drop Cables AUI or Drop cables can be no longer than 50 meters (164 ft.) each.

Propagation

Glossary

Technical Support Fax Order

Incident Summary

CentreCOM AT-3600 Manual Feedback

Where To Find Us

Index