Enterasys SBUQHS/QHB User manual

Quad User Modules
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

Quad User Modules User Manual
80-14001000-03ii
Publication — 80-14001000-03
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assumes no liability for losses incurred as a result of out of date or incorrect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:
©1996-1998, Cabletron Systems Ltd., all rights reserved.
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.
Refer to the SBU Systems User Manual for safety compliance and
precautions.
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, V.35 and V.24 interfaces
within the European Community (EC).
Only compatible Approved terminal apparatus may be connected to the User
ports, due to the hardwire connection to the Link ports when the unit is
powered off.
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.

Quad User Modules User Manual
80-14001000-03 iii
History Sheet
80-14001000-01 V1.00 software 24 June 1996
80-14001000-02 Cabletron Systems Edition 02 July 1997
80-14001000-03 Addition of Backup Modules 11 August 1998

Quad User Modules User Manual
80-14001000-03iv
TABLE OF CONTENTS
1SYSTEM DESCRIPTION 1–1
1.1 INTRODUCTION 1–1
1.2 THE PRIMARY RATE SYSTEM 1–2
1.3 FEATURES 1–3
1.4 MODULE TYPES 1–4
1.4.1 QUAD LOW SPEED MODULE (SBUQLS) 1–5
1.4.2 QUAD HIGH SPEED MODULE (SBUQHS) 1–5
1.4.3 QUAD LOW SPEED BACKUP MODULE (SBUQLB) 1–5
1.4.4 QUAD HIGH SPEED BACKUP MODULE (SBUQHB) 1–5
1.4.5 REAR CARDS 1–5
1.5 COMMAND MENU DESCRIPTION 1–6
1.6 GENERIC SHELF MANAGER CARD 1–6
2MODULE DESCRIPTION 2–1
2.1 INTRODUCTION 2–1
2.2 SHELF POWER LOADING 2–5
2.3 FUNCTIONAL DESCRIPTION 2–6
2.3.1 SBUQLS 2–6
2.3.2 SBUQHS 2–6
2.4 SBUQLB AND SBUQHB 2–7
2.4.1 CIRCUIT FAILURE 2–7
2.4.2 CIRCUIT RESTORAL 2–7
2.5 TALKWIRE 2–7
2.6 USER LED INDICATORS 2–8
2.7 PHYSICAL USER INTERFACES 2–9
2.8 ALARMS 2–10
2.9 JUMPERS - SBUQLS AND SBUQHS 2–12
2.10 JUMPERS - X.21 REAR ACCESS INTERFACE CARD 2–13
2.11 JUMPERS - X.21 REAR BACKUP INTERFACE CARD 2–14
2.12 JUMPERS - V.35 REAR ACCESS INTERFACE CARD 2–15
2.13 JUMPERS - V.24 REAR ACCESS INTERFACE CARD 2–15
2.14 JUMPERS - V.24 & V.35 REAR BACKUP INTERFACE CARD 2–16
2.15 DIL SWITCHES 2–16
3COMMAND PORT INTERFACE (SBUQLS/QLB) 3–1
3.1 MENU DESCRIPTION 3–1
3.2 TOP LEVEL MENU 3–1
3.3 OPERATION MENU (PORT) 3–2

TABLE OF CONTENTS
80-14001000-03 v
3.4 CONFIGURATION MENU 3–3
3.4.1 ALARMS MENU 3–4
3.4.2 USER PORT MENU 3–6
3.4.3 EDIT STORE MENUS 3–6
3.4.3.1INTERFACE MENU 3–7
3.4.3.2CALL CONTROL MENU 3–11
3.4.3.3LEASED CIRCUIT FAILURES MENU 3–14
3.4.3.4BACKUP MENU 3–15
3.4.3.5RESTORE MENU 3–15
3.4.3.6TIME WINDOWS MENU 3–16
3.4.3.7ISDNTEST MENU 3–18
3.4.3.8COPY STORE MENU 3–19
3.4.3.9RESET STORE TO DEFAULTS MENU 3–20
3.5 NUMBER STORE MENU 3–20
3.6 CYCLIC DIALLING STORE 3–21
4COMMAND PORT INTERFACE (SBUQHS/QHB) 4–1
4.1 MENU DESCRIPTION 4–1
4.2 TOP LEVEL MENU 4–2
4.3 OPERATION MENU (PORT) 4–2
4.4 CONFIGURATION MENU 4–2
4.4.1 ALARMS MENU 4–3
4.4.2 USER PORT MENU 4–5
4.4.3 EDIT STORE MENUS 4–6
4.4.3.1INTERFACE MENU 4–6
4.4.3.2CALL CONTROL MENU 4–8
4.4.3.3LEASED CIRCUIT FAILURES MENU 4–9
4.4.3.4BACKUP MENU 4–10
4.4.3.5RESTORE MENU 4–10
4.4.3.6TIME WINDOWS MENU 4–11
4.4.3.7ISDNTEST MENU 4–13
4.4.3.8COPY STORE MENU 4–14
4.4.3.9RESET STORE TO DEFAULTS MENU 4–14
4.5 NUMBER STORE MENU 4–15
4.6 CYCLIC DIALLING STORE 4–16
5V.25
BIS
CALL CONTROL (SBUQLS/QLB) 5–1
5.1 COMMAND FORMAT 5–1
5.2 DIAL COMMANDS 5–2
5.3 PROGRAM COMMANDS 5–2
5.4 LIST COMMANDS 5–3
5.5 ANSWERING COMMANDS 5–3

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5.6 MISCELLANEOUS RESPONSES 5–3
5.7 DIALLING PARAMETERS 5–4
5.8 MISCELLANEOUS FEATURES 5–4
5.8.1 DTR BUSY OUT 5–4
5.8.2 CTS DELAY 5–5
5.9 CONTROL SIGNALS REQUIRED 5–5
6AT CALL CONTROL (SBUQLS/QLB) 6–1
6.1 COMMAND FORMAT 6–1
6.2 COMMANDS 6–2
6.2.1 DIAL COMMANDS 6–2
6.2.2 PROGRAM COMMANDS 6–2
6.2.3 LIST COMMANDS 6–2
6.2.4 ANSWERING COMMANDS 6–3
6.2.5 MISCELLANEOUS COMMANDS 6–3
7C/DTR ORIGINATE CALL CONTROL 7–1
7.1 I/DSR 7–2
7.2 C/DTR 7–2
7.3 RI 7–2
8X.21 CALL CONTROL (SBUQLS/QLB) 8–1
8.1 COMMAND FORMAT 8–1
8.2 COMMANDS 8–1
8.3 DTE SELECTION SIGNALS 8–2
8.4 RESPONSES 8–3
8.5 DCE CALL PROGRESS SIGNALS 8–3
8.6 DCE CALL INFORMATION 8–3
8.7 COMMAND PARAMETERS 8–4
8.8 CONTROL SIGNALS REQUIRED 8–4
9INTERFACE SIGNALS 9–1
9.1 X.21 OPERATION 9–1
9.2 V.35 OPERATION 9–2
9.3 V.24 OPERATION 9–3
10 CABLE SPECIFICATIONS 10–1
10.1 X.21 USER AND LINK CABLES 10–2
10.2 V.35 USER CABLE 10–3
10.3 V.35 LINK CABLE 10–3

TABLE OF CONTENTS
80-14001000-03 vii
10.4 V.24 USER AND LINK CABLES 10–4
11 GLOSSARY OF TERMS 11–1
12 MENU DIAGRAMS 12–1
12.1 SBUQLS 12–2
12.1.1 SBUQLS CONFIGURATION MENU 12–2
12.1.2 SBUQLS OPERATION MENU 12–4
12.2 SBUQHS 12–5
12.2.1 SBUQHS OPERATION MENU 12–5
12.2.2 SBUQHS CONFIGURATION MENU 12–6

System Description
80-14001000-03 1–1
1 System Description
1.1 Introduction
This manual has been written to provide users of the Cabletron Systems
Primary Rate System with all the necessary information to configure and
operate the Quad User Modules.
This chapter provides a brief introduction to the cards, and the Primary
Rate system.
Chapter 2 provides information on the Quad User Modules.
Chapter 3 to 8 provide detailed information on configuration and
operation.
Please refer to Section 11 for the abbreviations found in this manual,
and section 12 for the Command Port Menu Diagrams.
Note that SmartSWITCH Backup (SBU) products were previously known
as Cyberbackup (CBU). Therefore all references in product manuals to
‘SBU’ products equally apply to ‘CBU’ products.

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1.2 The Primary Rate System
The Primary Rate system is a Cabletron Systems Primary Rate ISDN
product offering;
• up to 30 active channels each of which can operate at, or be rate
adapted up to 64 kbit/s, for X.21, V.35 or V.24 data access;
alternatively the Quad Basic Rate Module can offer up to 8 channels
using 4 BRI lines.
• N x 64 kbit/s services
• Multiple rack and SBUPRI card operation together with high-density
access or backup applications.
For cards other than the Quad User Modules used in the Shelf System,
please see the relevant manual.
Management is provided via the Manager Card (SBUGSM or SBULSM)
in the system. Please refer to the SBU Systems User Manual.
Local or Remote access to the cards in the shelf is by password which is
entered the first time any card in the shelf is polled. Alarm messages
from all application cards in the shelf are routed to the alarm and/or
command ports on the Manager card.
Configuration commands are issued to the cards from the management
console or the Cabletron Systems PC Management (SBU-NM) via the
Manager card. ALERTs are generated in a similar manner.

System Description
80-14001000-03 1–3
1.3 Features
• Up to 12 Access Quad Modules or 6 Backup Modules (comprising 1
front card + a choice of X.21, V.24, V.35 rear card) in one standard
Cabletron Systems SBU14C or SBU6C (previously known as
SBU/14 and SBU/6). The thirteenth and fourteenth shelf slots are for
the ‘B’ channel provider (e.g. SBUPRI) and the SBUGSM/SBULSM.
• Support for synchronous data rates of 600, 1k2, 2k4, 4k8, 9k6, 19k2,
38k4, 48k, 56k and 64kbit/s, and N x 64kbit/s up to 1,920kbit/s.
• Support for asynchronous data rates of 300, 600, 1k2, 2k4, 4k8, 9k6,
19k2, 38k4bit/s.
• Call control via the user ports using X.21, C/DTR, AT or V.25bis
dialling with the SBUQLS/QLB, C/DTR with the SBUQHS/QHB, or
from the console attached to the SBUGSM/SBULSM, or manual
initiation via the front panel buttons.
• Storage of 100 ISDN telephone numbers for each of the ports,
including a sub-address field for each.
• Automatic fault detection on the Digital Leased Circuits (DLCs).
• Fully automatic or manually initiated dialling and backup of the DLC.
• Local or remote control of the switch to a backup circuit.
• Fully automatic or manually initiated restoral to the main circuit.
• Automatic re-dial and alternate number dialling.
• Fail-safe main circuit routing.
• Menu selection user interface via the SBUGSM/SBULSM.
• Remote configuration and management via Talkwire.
• DLC Line integrity testing, both manual and automatic.
• Talkwire line integrity validation during call setup, before connecting
the user ports to the ‘B’ channels.
• ‘Alarm’ output for event logging and printing via the
SBUGSM/SBULSM.
• ‘Pass Through’ relays in the event of a power loss.
• Security using Calling Line Identification (CLID).
• Call-Back feature using CLID checking.
• Multiple Time Windows automatic back up operation.

Quad User Modules User Manual
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1.4 Module Types
Four types of the Quad User Module are available as follows:-
Card Type Function Shelf Slot width
Quad Low Speed Module
(SBUQLS) Dial access to 64kbit/s 1 slot
Quad High Speed Module
(SBUQHS) Dial access for N x 64kbit/s11 slot
Quad Low Speed Backup
Module (SBUQLB) Auto backup to 64kbit/s 2 slots
Quad High Speed Backup
Module (SBUQHB) Auto backup for N x 64kbit/s12 slots
When the modules are accessed via the Manager card, password
protection is provided by the Manager card; when accessed via Talkwire,
you will be prompted for a password (the Manager card password for the
shelf in which the interrogated unit resides) before being given access to
the unit.
Alarm messages from the cards in the shelf are routed to the alarm
and/or command ports on the Manager card.
For the SBUQLS and SBUQHS, there are two modes of aggregation.
Mode 1 uses all the ‘B’ channels for user data, but has no re-
synchronisation. Mode 3 uses an additional ‘B’ channel and will re-
synchronise should synchronisation be lost due to delay changes through
the network on some calls.
Please see the relevant section in this manual for details on the call
control features on each card.
1Where ‘N’ is 30 for Mode 1, or 29 for Mode 3.

System Description
80-14001000-03 1–5
1.4.1 Quad Low Speed Module (SBUQLS)
Four user ports are provided, supplying asynchronous rate adapted
speeds up to 38k4bit/s, or synchronous rate adapted speeds up to
64kbit/s.
The SBUQLS features are similar to those of the TA 64, in providing
terminal adaptor facilities.
1.4.2 Quad High Speed Module (SBUQHS)
Four user ports are provided, each supplying synchronous speeds of
N x 64kbit/s.
Inverse multiplexing is provided for the four user ports, each capable of
aggregating together a number of 64kbit/s ISDN ‘B’ channels to provide
an N x 64kbit/s stream.
1.4.3 Quad Low Speed Backup Module (SBUQLB)
Four user ports and four link ports provide automatic backup and restoral
in the event of DLC failure. Asynchronous rate adapted speeds are
provided up to 38k4bit/s, or synchronous rate adapted speeds up to
64kbit/s.
All the SBUQLS features are provided with the SBUQLB.
1.4.4 Quad High Speed Backup Module (SBUQHB)
Four user ports and four link ports provide automatic backup and restoral
in the event of DLC failure. Synchronous speeds of N x 64kbit/s are
provided.
All the SBUQHS features are provided with the SBUQHB.
1.4.5 Rear Cards
Both SBUQLS and SBUQHS provide four user ports per card. SBUQLB
and SBUQHB in addition provide 4 link ports. Standard V.24, X.21, and
V.35 interfaces are offered, V.24 for the SBUQLS/QLB only.
The interfaces type is chosen by selection of the type of interface card
you require for all 4 ports. The same rear cards are used for both low
speed and high speed cards.

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1.5 Command Menu Description
The command structure for the Manager card command port is a menu
driven system with a hierarchical type of structure. See section 12 for
diagrams of the menu structure.
The command port on the Manager card operates in two different modes
to suit your requirements:
Normal mode in which any terminal can be connected to it.
Polled mode in which the port behaves as if it were the master port
of a Rackmount Cabletron Systems Generic Port
Sharer, or a standalone Cabletron Systems PSV4/1.
Please refer to the manual on the SBU Systems for details of how to set
this and other parameters on the Manager card.
The Command or Alarm Port parameters on the Modules are
‘starred’ out as they are unavailable. Please refer to the SBU
Systems Manual for setting these with the Manager card.
1.6 Manager Card
This is responsible for configuring the cards and for collecting ALERTs
from all application cards. A full description of the manager card can be
found in the SBU Systems User Manual, which is provided as part of the
documentation set.

Module Description
80-14001000-03 2–1
2 Module Description
2.1 Introduction
The Modules use a discrete front card; interface changes being
accommodated by changing the rear interface cards which are common
to both front card types.
Figure 1, Figure 2and Figure 3 overleaf show the front and rear panels
for all card types.

Quad User Modules User Manual
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Rear (V.24)
(SBUQLS only)
User 1
User 2
User 3
User 4
User 2
User 3
User 4
User 1
Rear (V.35)
Rear (X.21)
User 1
User 2
User 3
User 4
SBUQLS
Front
User 1/2
TTxD
RRxD
CDTR
I DCR
STxC
RxC
RTS
CTS
DSR
RI
DIAL 1
DIAL 2
Connected
User 1/2
User 3/4
TalkWire
Alert
User 3/4
TTxD
RRxD
CDTR
I DCR
STxC
RxC
RTS
CTS
DSR
RI
DIAL 3
DIAL 4
SBU
Test
Bit Err
SBUQHS
Front
User 1/2
TTxD
RRxD
CDTR
I DCR
STxC
RxC
RTS
CTS
DSR
RI
DIAL 1
DIAL 2
Connected
User 1/2
User 3/4
TalkWire
Alert
User 3/4
TTxD
RRxD
CDTR
I DCR
STxC
RxC
RTS
CTS
DSR
RI
DIAL 3
DIAL 4
SBU
Test
Bit Err
QLS QHS
Figure 1 - Front and Rear SBUQLS and SBUQHS Panels

Module Description
80-14001000-03 2–3
User 1/2
TTxD
RRxD
CDTR
IDCD
STxC
RxC
RTS
CTS
DSR
RI
BACKUP 1
BACKUP 2
Backup
User 1/2
User 3/4
TalkW ire
Alert
User 3/4
TTxD
RRxD
CDTR
IDCD
STxC
RxC
RTS
CTS
DSR
RI
BACKUP 3
BACKUP 4
SBU
Test
Bit Error
QLB
User 1/2
TTxD
RRxD
CDTR
IDCD
STxC
RxC
RTS
CTS
DSR
RI
BACKUP 1
BACKUP 2
Backup
User 1/2
User 3/4
TalkW ire
Alert
User 3/4
TTxD
RRxD
CDTR
IDCD
STxC
RxC
RTS
CTS
DSR
RI
BACKUP 3
BACKUP 4
SBU
Test
Bit Error
QHB
SBUQLB
Front SBUQHB
Front
Figure 2 - Front SBUQLB and SBUQHB Panels

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Rear (X.21)
Rear (V.24)
(SBUQLB only)
User 1
Link 1
User 2
Link 2
User 3
Link 3
User 4
Link 4
User 1
Link 1
User 2
Link 2
User 3
Link 3
User 4
Link 4
Link 1
User 2
Link 2
User 1
Rear (V.35)
Link 3
User 4
Link 4
User 3
Figure 3 - Rear SBUQLB and SBUQHB Panels

Module Description
80-14001000-03 2–5
2.2 Shelf Power Loading
Up to 12 Access modules (or 6 Backup modules) can be fitted into
Cabletron Systems SBU14C Shelf, or 4 Access (or 2 Backup) modules in
a SBU6C Shelf.
The modules require the following current (in mA) on the power rails:
Type +5V +12V -12V
SBUQLS X21 275 0 0
SBUQLS V35 250 25 25
SBUQLS V24 250 25 25
SBUQHS X21 2,250 0 0
SBUQHS V35 2,200 25 25
SBUQHS V24 2,200 25 25
SBUQLB X21 1,050 600 0
SBUQLB V35 930 880 50
SBUQLB V24 250 620 50
SBUQHB X21 2,830 600 0
SBUQHB V35 2,780 880 50
SBUQHB V24 2,250 620 50
When installing modules into the Shelf, the installation engineer must
ensure that the shelf power supplies’ combined output can meet both the
overall power requirements and the individual rail current requirements
of all the cards in the shelf. (Please refer to the relevant manuals for this
information on other cards). This is true whether allowing for redundancy
or not.
Details of the power supplies’ capacity are in the SBU Systems manual.
Warning:
The Shelf and cards should be professionally installed by a
competent engineer. There are no operator serviceable parts

Quad User Modules User Manual
80-14001000-032–6
inside the unit and it should only be opened by a qualified
service engineer. The mains supply should be disconnected
before accessing the interior.
Gefäh! Bereich. Nur für fachpersonal. Nicht öffnen
berührungsgefahr!
2.3 Functional Description
2.3.1 SBUQLS
The SBUQLS provides call originate and answering facilities with
V.25
bis , ‘X.21’, and ‘AT’ command sets, also C/DTR dialling and front
panel button control. Multiple dial stores and CLID stores are provided
for each port.
2.3.2 SBUQHS
The SBUQHS provides C/DTR dialling in addition to front panel dialling
control. Multiple dial stores and CLID stores are provided for each port.
Inverse multiplexing is provided for the four user ports, each capable of
aggregating together up to thirty 64kbit/s ISDN ‘B’ channels to provide an
N x 64 kbit/s stream, using either all ‘B’ channels for Mode 1, or N+1 ‘B’
channels for Mode 3. The extra ‘B’ channel in Mode 3 is required due to
synchronisation and channel aggregation management.
Two speed settings are available for each port:-
• The ‘desired’ speed
• The ‘fallback’ speed.
The ‘desired’ speed is the speed that the user would prefer to operate at,
while the ‘fallback’ is the lowest that the user will tolerate. This feature
enables a requested speed for example of 384 kbit/s to be negotiated.
However it will tolerate a specified minimum speed for example of
256 kbit/s which is acceptable for attached DTE equipment operation.
This method provides a reduced level of service if there are only four ‘B’
channels available on the system, rather than six as desired in this
example.

Module Description
80-14001000-03 2–7
2.4 SBUQLB and SBUQHB
These units provide an additional 4 ports for connection to the DLC, and
as a consequence occupy 2 slots of the shelf. Fully automatic backup
and restoral features are provided with these modules.
Rear card by-pass relays on all four pairs of ports allow for hardwire
through connection of the DLC to the User equipment in the event of
power failure to the shelf.
All the dial access facilities provided with SBUQLS are provided on the
SBUQLB and similarly for the SBUQHS and SBUQHB. Full backup
facilities are provided with the SBUQHS and SBUQHB.
2.4.1 Circuit Failure
Automatic backup due to detection of DLC failure occurs if any of the
following conditions are detected:
• No data is received from the DLC.
• No clock is detected from the DLC.
• The I/DSR signal from the DLC 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.
2.4.2 Circuit Restoral
Automatic restoral is effected by passing ‘Talkwire’ over the DLC to
verify that an error free path has been re-gained, before switching user
data back onto the DLC. The time for Talkwire to verify the DLC for
integrity can be set by the user.
2.5 Talkwire
Talkwire calls for management or call control can be made or received
on all ports simultaneously on the SBUQLS/QLB.
When a Talkwire call is made to the SBUQLS/QLB in order to access its
command menu, the remote user will be prompted for a password - this