Cabletron Systems sbu128 User manual

SBU128

User Manual

Fivemere Ltd. Cabletron Systems Ltd.

Fivemere House Network House

161 High Street Newbury Business Park

Aldershot London Road, Newbury

Hampshire, England Berkshire, England

GU11 1TT RG13 2PZ

Telephone: [44] (0)1635 580000

Fax: [44] (0)1635 44578

SBU128

User Manual

80-10200000-01ii

Publication — 80-10200000-01

Publication Notice:

This manual has been compiled and checked for accuracy. However the

information contained in this manual does not constitute a warranty of

performance. Cabletron Systems Ltd. reserves the right to revise this

publication from time to time without notice. Cabletron Systems Ltd.

assumes no liability for losses incurred as a result of out of date or incorrect

information contained in this manual.

Proprietary Notice:

This document may not in whole or part be copied, photocopied, reproduced,

translated, or reduced to any electronic medium or machine-readable form

without prior consent from Cabletron Systems Ltd.

Approval Notice:

This equipment is approved for connection to all United Kingdom

telecommunications services, including British Telecom PLC, Hull City

Council and Mercury Communications, and is subject to the conditions set

out in these instructions for use.

All users of this equipment in the UK and Europe must make themselves

familiar with the statutory instructions contained in Section 9.

Pan European Approval:

Where the Pan European Approval CE Mark ‘168X’ is applied to the product;

this approval is for connection of the ISDN, X.21 and V.35 interfaces within

the European Community (EC).

Approval in non EC countries is subject to local regulations in force, please

contact your Technical Support for information.

EMC Directive:

This product has been designed for use in Commercial and Light Industrial

environments and tested to relevant EMC Standards as listed in the

European O.J. All testing was carried out using screened interconnection

cables. Should the equipment be used in a different environment the user

may need to take additional EMC precautions.

Fivemere Ltd. is a subsidiary of Cabletron Systems Inc., USA.

SBU128

User Manual

80-10200000-01 iii

History Sheet

80-10200000-01 V1.00 Software 31 July 1998

SBU128

User Manual

80-10200000-01iv

TABLE OF CONTENTS

1 THIS IS THE SBU128 1–1

1.1

I

NTRODUCTION

1–1

1.2

F

EATURES

1–3

1.3

P

RODUCT

O

VERVIEW

1–4

1.3.1

N

ETWORK

S

ECURITY

1–4

1.3.2

T

ELEPHONE

N

UMBER

S

TORAGE

1–4

1.3.3

C

IRCUIT

F

AILURE

1–4

1.3.4

S

POOFING

1–5

1.3.5

T

ALKWIRE

1–5

1.3.6

P

OLLING

1–5

1.3.7

A

LARMS

1–6

2 THE HARDWARE 2–1

2.1

I

NTRODUCTION

2–1

2.2

DLC I

NTERFACE

C

HARACTERISTICS

2–2

2.3

I

NTERFACE

P

IN

A

SSIGNMENTS

2–3

2.3.1

U

SER AND

L

INK

2–3

2.3.2

C

OMMAND

P

ORT

2–4

2.4

X21

AND

V35 I

NTERFACE

L

INKS

2–5

2.4.1

X21 USER/LINK P

IN

1 D

EFINITION

2–5

2.4.2

V35 USER/LINK P

IN

1 D

EFINITION

2–5

2.4.3

X21 R

ECEIVER

T

ERMINATIONS

2–5

2.4.4

V35 R

ECEIVER

T

ERMINATIONS

2–5

2.4.5

ISDN 2–6

2.5

C

OMMAND

T

ERMINAL

A

CCESS

2–6

2.6

N

ON

V

OLATILE

O

PTIONS

2–6

2.6.1

P

RODUCT AND

N

ETWORK

V

ARIANTS

2–6

2.6.2

S-B

US

P

OWER

D

ETECTION

2–7

3 FRONT AND REAR PANEL DESCRIPTIONS 3–1

3.1

F

RONT

P

ANEL

D

ESCRIPTION

3–2

3.1.1

USER I

NDICATORS

3–3

3.1.2

BACKUP B

UTTON

, F

ACTORY

D

EFAULT

3–4

3.1.3

T

ALKWIRE AND

ALERT I

NDICATORS

3–4

3.1.4

ISDN I

NDICATORS

3–5

3.1.5

S

TATUS

I

NDICATOR

3–5

3.1.6

P

OWER

I

NDICATOR

3–5

3.2

R

EAR

P

ANEL

D

ESCRIPTION

3–6

TABLE OF CONTENTS

80-10200000-01 v

3.2.1

C

OMMAND

P

ORT

3–6

3.2.2

USER

AND

LINK P

ORTS

3–6

3.2.2.1

USER

AND

LINK P

IN

A

SSIGNMENTS

3–6

3.2.3

ISDN 3–6

3.2.3.1

B

ASIC

R

ATE

S (E

UROPE

) I

NTERFACE

3–7

3.3

M

AINS

I

NPUT AND

W

IRING

3–8

3.4

S

UPPLY

R

ATINGS

3–9

4 CONFIGURATION COMMANDS 4–1

4.1

I

NTRODUCTION

4–1

4.2

M

ENU

D

ESCRIPTION

4–1

4.3

T

OP

L

EVEL

M

ENU

4–2

4.4

O

PERATION MENU

4–3

4.5

C

ONFIGURATION MENU

4–4

4.5.1

S

YSTEM

M

ENU

4–5

4.5.2

C

OMMAND

P

ORT

M

ENU

4–5

4.5.3

A

LARM

P

ORT

M

ENU

4–7

4.5.4

A

LARMS MENU

4–8

4.5.5

U

SER

P

ORT MENU

4–12

4.5.6

E

DIT

S

TORE

M

ENUS

4–12

4.5.6.1

I

NTERFACE MENU

4–13

4.5.6.2

C

ALL CONTROL MENU

4–17

4.5.6.3

L

EASED

C

IRCUIT

F

AILURES MENU

4–19

4.5.6.4

B

ACKUP MENU

4–20

4.5.6.5

R

ESTORE MENU

4–21

4.5.6.6

T

IME

W

INDOWS MENU

4–22

4.5.6.7

ISDNTEST

MENU

4–23

4.5.6.8

C

OPY

S

TORE

M

ENU

4–24

4.5.6.9

R

ESET

S

TORE TO

D

EFAULTS

M

ENU

4–25

4.6

N

UMBER STORE MENU

4–25

4.7

C

YCLIC

D

IALLING

S

TORE

4–27

4.8

L

INE

C

ONFIGURATION

4–28

4.9

ISDN M

ENU

4–28

4.10

N

ON

V

OLATILE

O

PTIONS

4–28

5 TALKWIRE OPERATION 5–1

5.1

I

NTRODUCTION

5–1

5.1.1

L

INE

U

SAGE

5–1

5.2

E

NABLING

/D

ISABLING THE

T

ALKWIRE

F

ACILITY

5–2

5.3

I

NITIATING A

T

ALKWIRE

C

ALL

5–2

SBU128

User Manual

80-10200000-01vi

5.4

U

SING

T

ALKWIRE FOR

DLC T

ESTING

5–3

5.5

LOCAL M

ODE

5–3

5.6

REMOTE M

ODE

5–4

5.7

U

SING

T

ALKWIRE

D

URING A

B

ACKUP

5–4

6 POLLED MANAGEMENT 6–1

6.1

I

NTRODUCTION

6–1

6.2

C

ONFIGURING THE

SBU128 P

OLLING

A

DDRESS

6–1

6.3

C

ONFIGURING THE

P

OLLED

C

OMMAND

M

ODE

6–2

6.4

C

ONNECTING TO A

S

PECIFIC

SBU128 W

ITHIN A

P

OLLED

E

NVIRONMENT

6–2

7 SBU128 SPECIFICATION 7–1

8 CABLE SPECIFICATIONS 8–1

8.1

X.21 U

SER AND

L

INK

C

ABLES

8–2

8.2 V.35 U

SER

C

ABLE

8–3

8.3 V.35 L

INK

C

ABLE

8–3

8.4

C

OMMAND

P

ORT

C

ABLE

8–4

8.5

P

OLLED

M

ANAGEMENT

M

ODE

8–4

9 EUROPEAN APPROVALS INFORMATION 9–1

10 GLOSSARY OF TERMS 10–1

11 COMMAND MAPS 11–1

11.1

C

ONFIGURATION

M

ENU

11–2

11.2

O

PERATION

M

ENU

11–4

This is the SBU128

80-10200000-01 1–1

1 This is the SBU128

1.1 Introduction

The SmartSWITCH SBU128 Backup Unit provides an effective, easy to

implement, automatic backup over the ISDN (Integrated Services Digital

Network) for an X.21 or V.35 PTO Leased Digital Circuit (DLC).

The ISDN Basic Rate Interface (BRI) is provided by a public switched

digital network, enabling simultaneous multi-service connection over a

single pipe, consisting of two 64kbit/s data paths and one 16kbit/s control

channel.

The SBU128 is available as a single channel device, but using both

ISDN 64kbit/s ‘B’ channels providing backup on ISDN for the user at

128kbit/s.

The SBU128 is designed to sit in the data path between the PTO DLC

Network Termination Unit (NTU) and your user equipment, see Figure

1.1.

SBU128

User Manual

80-10200000-011–2

ISDN

(Backup Circuit)

User

Equipment

User

Equipment

Digital Leased Circuit

N

T

U

N

T

U

(Main Circuit)

SBU128

Figure 1.1 SBU128 sits in the data path

During normal operating conditions, user data passes over the DLC, with

the SBU128 remaining transparent to the system. If a failure occurs on

the DLC, this is detected by the SBU128. After a user defined elapsed

time, the SBU128 dials a remote SmartSWITCH BACKUP unit via the

ISDN line. Upon verification of an acceptable connection the data is

then re-directed over this backup path.

The backup operation is user configured for either automatic or manual

initiation. While the backup data circuit is in use the SBU128 monitors

the failed DLC line and upon detection of its recovery clears the ISDN

call, when data is returned to the DLC line (main leased circuit).

Note that the SmartSWITCH BACKUP product range was previously

known as the CyberBACKUP range, denoted by ‘CBU’ instead of ‘SBU’.

This is the SBU128

80-10200000-01 1–3

1.2 Features

The main features include:

• Interference free operation of the DLC, with the SBU128 installed.

• Support for synchronous data rates of 600, 1k2, 2k4, 4k8, 9k6, 19k2,

38k4, 48k, 56k, 64k, 128kbit/s.

• Support for asynchronous data rates of 300, 600, 1k2, 2k4, 4k8,

9k6, 19k2, 38k4 bit/s.

• Asynchronous word lengths of 7, 8, 9, 10, 11 & 12 bits.

• Automatic fault detection on the DLC circuit.

• Fully automatic or manually initiated dialling and backup of the DLC.

• Local or remote control of the switch to the backup circuit.

• Fully automatic or manually initiated restoral to the main circuit.

• Automatic re-dial and alternate number dialling.

• Storage of 20 ISDN telephone numbers for the User port.

• 20 digit sub-address number.

• 20 digit Multiple Subscriber Number.

• User definable line failure detection modes.

• Remote Configuration and monitoring.

• Automatic Remote Alarm Reporting via ISDN ‘B’ channel.

• Structured operation and configuration menu system.

• Line integrity testing, both manual and automatic.

• ‘Alarm’ output port for event logging, printing.

• Security using Calling Line Identification.

• ‘Pass Through’ relays in the event of a power loss.

• Talkwire compatibility with other Cabletron SmartSWITCH BACKUP

products.

• Password protected command interface.

• Multiple Time Windows automatic back up operation.

• Remote backup spoofing to reduce the burden of central site call

costs.

• Local spoof of transmit data to prevent unwanted backup with host or

terminal failure.

SBU128

User Manual

80-10200000-011–4

1.3 Product Overview

This user manual is arranged to take you through the basics of the

hardware, then to software set-up and on to the more specialised user

definable software facilities of your SBU128.

SBU128 software configuration is generally not a complex operation. In

many applications once you have correctly configured the hardware and

installed your SBU128s, the default software configuration settings will

suffice to provide reliable backup operation.

In this section there is a brief overview of many of the more specialised,

software configurable, features of your SBU128. Each topic is dealt with

in detail later in this manual.

1.3.1 Network Security

Your SBU128 contains an integral security facility, designed to protect it

from being accessed by unauthorised users via the ISDN.

If the security option is enabled (ANSWER is set to CLID), the answering

SBU128 will only accept a call originating from an ISDN number

matching one of those stored in its file of telephone numbers.

1.3.2 Telephone Number Storage

The non volatile memory will store up to 20 telephone numbers, allowing

you to select a backup telephone number for any particular circuit.

Alternative numbers can be dialled in the event of an unsuccessful call.

1.3.3 Circuit Failure

Your SBU128 can detect a circuit failure if it detects any of the following

conditions:

• No data is received from the DLC.

• No clock is detected on the link.

• The I/DSR signal from the DLC NTU goes to the OFF condition.

• The C/DTR signal from the User DTE equipment goes to the ON

condition.

User selectable time-outs can be independently set for all of the

detection facilities mentioned, except C/DTR from the DTE.

This is the SBU128

80-10200000-01 1–5

1.3.4 Spoofing

There are two occurrences with automatic backup technology which

need to be provided for.

The first is where a terminal or CPU stops transmitting idle data frames.

In this instance the SBU128 would normally backup, which is

undesirable. Enabling the SBU128 Transmit Spoof causes a line

inversion to be sent once a second whenever no data is transmitted from

the user DTE to the User port; this prevents data loss backup from

occurring.

The second is where a central site does not want to bear the cost of all

backup calls. Enabling the Remote Backup Spoofing causes transmit

data to the DLC to be clamped to a constant mark, thus causing the

remote SBU128 to detect dataloss, and then backup.

1.3.5 Talkwire

Talkwire is the facility which enables remote control and configuration of

an SBU128 over the ISDN network when data is being routed over the

DLC.

As this feature allows you access to all SBU128s connected to the ISDN

(providing you have the correct telephone number), the SBU128

supports the Network provided Calling Line Identification facility for

enhanced security.

1.3.6 Polling

In a large network of SBU128s, all units can be interconnected and

controlled using a single terminal.

A “poll” number can be set for each unit within the group, allowing

individual SBU128s to be accessed from the terminal by using the poll

numbering system.

SBU128

User Manual

80-10200000-011–6

1.3.7 Alarms

Various alarm conditions are available that alert the user to the SBU128

alarm status. You can also define which of these EVENTs you want to

be output as an ALERT. The ALERT message is defined as being an

alarm that is passed across a network of several Cabletron backup units.

An EVENT message occurs locally, and is seen only when the unit is

actively polled.

For example, incoming calls and DLC failure can be programmed to

cause ALERTs, Talkwire Active/Inactive and Ringing are only events.

An ALERT message can also be programmed to occur when password

access is denied.

The Hardware

80-10200000-01 2–1

2 The Hardware

2.1 Introduction

All SBU128 configuration options are software controlled, and settings

can easily be altered after the unit is installed in the system.

However the physical interface characteristics of the USER and LINK

ports are defined at manufacture by using separate pcb modules which

are not changeable except at the premises of your equipment supplier

and maintainer. They must only be changed by your supplier or

installation engineer.

WARNING. Access to the internal workings of your SBU128 is

strictly denied to all users, and may only be performed by

suitably qualified personnel. Any attempt to remove the outer

casing of your product will invalidate its approval.

Zone dangereuse! reservée au personnel autorisé. Ne pas

ouvrir. Tensions dangereuses.

Gefäh! Bereich. Nur für fachpersonal. Nicht öffnen

berührungsgefahr!

Pericole! Solo personale addestrato. Non aprire. Tensioni

pericolase all ‘interno.

Area peligrosa solo personal mantenimiento. No abrir.

Tension. Peligrosa.

SBU128

User Manual

80-10200000-012–2

Area perigosa somente pessoal técnico treinado. Não abra.

Voltagens perigosas no interior.

Farligt omräde endast för utbildad personal. Öppna ej. Farlig

spanning inuti.

Farligt omräde. Kun adgang for teknisk uddannet personale.

Farlig spænding indeni. Luk ikke op.

Vaarallinen alue vain koulutetulle huoltohenkilöstölle.

Vaarallinen jännite. Alã avaa.

Fare - Må ikke åpnes. Farlige spenninger innenfor.

Gevaarlijk. Toogang alleen voor onderhoudspersoneel. Niet

openen. Gevaarlijke voltages.

2.2 DLC Interface Characteristics

X21 and X21bis Digital Leased Circuit types include V11 and V35 as

electrical interface options.

Your SBU128 has been designed for compatibility with V35 and X21

interfaces, through choice of pcb interface module at the time of

ordering.

A one to one cable is required on both the User and Link sides of the

SBU128. Cable specifications are detailed in section 10 and cables are

available from your SBU128 supplier.

The Hardware

80-10200000-01 2–3

2.3 Interface Pin Assignments

2.3.1 User and Link

Pin assignments of the USER and LINK connectors will vary with the

interface module type.

The USER ports are configured as physical DCEs and the LINK ports are

configured as physical DTEs. Their pin assignments are:

V35 operation

Pin Circuit Signal

A 101 Protective Ground

B 102 Signal Ground/Common Return

C 105 Request to Send

D 106 Clear to Send

E 107 Data Set Ready

F 109 Data Channel Received Line Signal Detector

H 108 Data Terminal Ready

J 125 Calling Indicator

K - Unused

L 141 Local Loopback

M - Unused

N 140 Loopback/Maintenance Test

P 103(A) Transmitted Data A

R 104(A) Received Data A

S 103(B) Transmitted Data B

T 104(B) Received Data B

U - Unused

V 115(A) Receiver Signal Element Timing A

W - Unused

X 115(B) Receiver Signal Element Timing B

Y 114(A) Transmitter Signal Element Timing A

Z - Unused

AA 114(B) Transmitter Signal Element Timing B

BB - HH Unused

JJ Unused

KK Unused

LL Unused

MM - Unused

NN 142 Test Indicator

SBU128

User Manual

80-10200000-012–4

See section 2.4.1 for details of Pin 1 connection to Protective Ground,

factory default setting assumes no links fitted.

X21 operation

Pin Circuit Signal

1 SHLD Protective Ground

2 T(A) Transmit

3 C(A) Control

4 R(A) Receive

5 I(A) Indication

6 S(A) Signal Element Timing

7 - Unused

8 G Signal Ground or Common Return

9 T(B) Transmit

10 C(B) Control

11 R(B) Receive

12 I(B) Indication

13 S(B) Signal Element Timing

14 - Unused

15 - Unused

See section 2.4.2 for details of Pin 1 connection to Protective Ground,

factory default setting assumes no links fitted.

2.3.2 Command Port

Pin assignments on the 25-way connector are:

Pin no. Circuit Circuit name Source

1 GND Protective Ground

2 103 Transmit Data DTE

3 104 Receive Data DCE

4 105 Request To Send DTE

5 106 Clear To Send DCE

6 107 Data Set Ready DCE

7 102 Signal Ground

8 109 Data Carrier Detect DCE

9 -19 Not used

20 108/2 Data Terminal Ready DTE

21-25 Not used

The Hardware

80-10200000-01 2–5

2.4 X21 and V35 Interface Links

JP 1 connects Signal Ground (SG) to Protective Ground (PG) for the

SBU128.

All links are found on the interface pcb.

2.4.1 X21 USER/LINK Pin 1 Definition

Pin 1 on the 15-way X21 USER and LINK connectors can be connected

to Protective Ground (PG) using pcb links.

Shorting Link Pin definition

JP1 SG - PG

JP7 User port pin 1 to PG

JP8 Link port pin 1 to PG

2.4.2 V35 USER/LINK Pin 1 Definition

Pin ‘A’ on the V35 USER and LINK connectors can be connected to

Protective Ground using pcb links.

Shorting Link Pin definition

JP1 SG - PG

JP2 User port pin 1 to PG

JP3 Link port pin 1 to PG

2.4.3 X21 Receiver Terminations

The following links when fitted, apply a 120 ohm termination to the V11

receivers as follows:-

Shorting Link Interface Circuit

JP2 User T

JP3 User C

JP4 Link R

JP5 Link I

JP6 Link S

2.4.4 V35 Receiver Terminations

Receiver termination resistors are fitted on these interfaces, and cannot

be deselected.

SBU128

User Manual

80-10200000-012–6

2.4.5 ISDN

The following links when fitted to the ISDN pcb, apply a 100 ohm

termination to the ISDN transmit and receive pairs as follows:-

Shorting Link Pair

JP1 Receive

JP2 Transmit

These links may need to be inserted when a longer S-bus line length is

used.

2.5 Command Terminal Access

Software configuration and control of your SBU128 is achieved via the

Command port on the rear panel, using a local terminal, modem or PC.

The port is configured as a physical DCE, the terminal standard is

VT100, with data transfer at 9600 bit/s, no parity, 8 data bits, 1 start and

1 or 2 stop bits. This data rate can be altered by software command. No

terminal emulation is used.

There is no hardware configuration to the Command port.

2.6 Non Volatile Options

These options are “non-volatile” because they are not defaulted when a

factory default is performed. However the first “A” option in each sub-

menu is the preferred setting that is naturally set (by virtue of all “1”s in

the RAM locations) when the unit is built, unless specifically changed for

the country of destination.

2.6.1 Product and Network Variants

Different operational modes can be selected with the Product Variants

menu. Different Network Variants can be selected allowing several

different countries and product variants to use the same software held in

FLASH memory.

Both these variants can be changed via the Non Volatile Options menu,

obtainable by typing the letter ‘K’ at the top level menu. The correct

variants are set for the destination country and application before

shipping.

The Hardware

80-10200000-01 2–7

All Non Volatile Options are set during manufacture and must

not be changed, except by a competent engineer.

Network Variant 0 is for most European networks, most other countries

with Euro-ISDN are likely to require Network Variant 0. Network

Variant 2 is the same as Variant 0 except that it does not have single

octet information elements present in the call setup message.

Please contact your Technical Support for further information.

NOTE: Network Variants 1 onwards must not be set in the UK,

otherwise the Approval of this product will be invalidated.

Changes to this setting must only be made by a competent

engineer.

2.6.2 S-Bus Power Detection

S-Bus Power Detection must be enabled for all UK and European ISDN

applications, where ‘Power Source 1’ detection is a regulatory

requirement. Where ‘Power Source 1’ is not provided (i.e. on some PBX

internal ISDN extensions), S-Bus Power Detection should be disabled,

otherwise ISDN calls will not be possible.

Presence of ‘Power Source 1’ is where 40V DC power is applied by the

network between the transmit and receive ‘S’ bus pairs. Enabling power

source detection means that line power must be present before calls can

be made or received.

All Non Volatile Options will be set during manufacture and

must not be changed, except by a competent engineer.

It is possible that a designated “country” variant could be used in another

country if approvals in that country permit it.

If an SBU128 is upgraded with later software, please contact your local

Technical Support organisation for further information.

Front and Rear Panel Descriptions

80-10200000-01 3–1

3 Front and Rear Panel Descriptions

The SBU128 is a standalone unit designed to sit on a desktop, or a shelf

in a standard communications cabinet. All physical connections are

made by connectors on the rear panel, see Figure 3.1 and Figure

3.2

below:-

Figure 3.1 SBU128 Front panel

Page is loading ...

Cabletron Systems sbu128 User manual

This manual is also suitable for

Cabletron Systems sbu128 User manual

Related papers

Other documents