Enterasys WPIM-E1 Network Manual

WPIM-E1

LOCAL MANAGEMENT GUIDE

NOTICE

Cabletron Systems reserves the right to make changes in speciﬁcations and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made.

The hardware, ﬁrmware, or software described in this manual is subject to change without notice. IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,

INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.

CAUTION: THE WPIM-E1 IS INTENDED TO BE INSTALLED IN TUV APPROVED EQUIPMENT BY A QUALIFIED SERVICE PERSON. CHECK THE EQUIPMENT OPERATION/INSTALLATION INSTR UCTIONS AND/OR EQUIPMENT MANUFACTURER T O VERIFY/CONFIRM YOUR EQUIPMENT IS SUITABLE FOR INSTALLED APPLICATION CARDS.

CAUTION: ALWAYS DISCONNECT THE E1 BOARD (THE ONE WITH THE TELEPHONE PLUG/JACK) FROM THE TELEPHONE SYSTEM WHEN INSTALLING OR WHEN THE COVERS ARE REMOVED FROM THE HOST PRODUCT.

Achtung:

TÜV-zugelassenen Geräten installiert werden. Vor dem Einbau muß in der Installationsanweisung und Funktionsbeschreibung des Gerätes überprüft werden ob das Modul kompatible ist und verwendet werden kann.

Achtung:

Printed in the United States of America Part Number: 9031484-02 February 1996

BRIM, EMM-E6, MicroMMAC

of Cabletron Systems, Inc.

All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies.

Das WPIM-E1 Modul darf nur von qualifiziertem Service Personal in

Die Verbindung zu dem E1-Modul (die Karte mit dem Telefonanschluß) muß bei

and

NBR-620

are registered trademarks and

WPIM

is a trademark

WPIM-E1 LOCAL MANAGEMENT GUIDE

Printed On Recycled Paper

NOTICE

VCCI NOTICE

This equipment is in the 1st Class Category (information equipment to be used in commercial and/or industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial and/or industrial areas.

Consequently , when used in a residential area or in an adjacent area thereto, radio interference may be caused to radios and TV receivers, etc.

Read the instructions for correct handling

CABLETRON SYSTEMS, INC.

PROGRAM LICENSE AGREEMENT

IMPORTANT

This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in ﬁrmware, chips or other media. BY UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT , PR OMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

: Before utilizing this product, carefully read this License Agreement.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE. package subject to the terms and conditions of this License Agreement.

You may not copy, reproduce or transmit any part of the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron.

2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the Program.

3. APPLICABLE LAW. This License Agreement shall be interpreted and governed under the laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts.

You have the right to use only the one (1) copy of the Program provided in this

WPIM-E1 LOCAL MANAGEMENT GUIDE

EXCLUSION OF WARRANTY

AND DISCLAIMER OF LIABILITY

NOTICE

1. EXCLUSION OF WARRANTY.

writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.

2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL

CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

Except as may be specifically provided by Cabletron in

UNITED STATES GOVERNMENT RESTRICTED RIGHTS

The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers.

For Department of Defense units, the product is licensed with “Restricted Rights” as deﬁned in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at

252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867.

WPIM-E1 LOCAL MANAGEMENT GUIDE

iii

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL................................................................1-1

1.2 GETTING HELP..........................................................................1-2

1.3 WPIM-E1 FEATURES.................................................................1-2

1.4 WPIM-E1 SPECIFICATIONS......................................................1-3

1.5 RELATED MANUALS..................................................................1-4

CHAPTER 2 LOCAL MANAGEMENT

2.1 THE WAN PHYSICAL CONFIGURATION SCREEN..................2-2

2.1.1 WAN Physical Configuration Screen Fields ...................2-2

2.1.2 WPIM-E1 Configuration Fields.......................................2-3

2.1.3 The WPIM Timeslot Configuration Table........................2-5

2.2 THE WAN INTERFACE CONFIGURATION SCREEN ...............2-7

2.2.1 WAN Interface Configuration Screen Fields...................2-8

2.3 FULL E-1 CONFIGURATION USING PPP ...............................2-10

2.3.1 WPIM-E1 Physical Configuration .................................2-11

2.3.2 WPIM-E1 Interface Configuration.................................2-12

2.4 FRACTIONAL E-1 CONFIGURATION USING PPP .................2-14

2.4.1 WPIM-E1 Physical Configuration .................................2-15

2.4.2 WPIM-E1 Interface Configuration.................................2-17

2.5 FRAME RELAY CONFIGURATION..........................................2-18

2.5.1 WPIM-E1 Physical Configuration .................................2-19

2.5.2 WPIM-E1 Interface Configuration.................................2-21

2.6 LEX CONFIGURATION.............................................................2-22

2.6.1 WPIM-E1 Physical Configuration .................................2-22

2.6.2 WPIM-E1 Interface Configuration.................................2-24

APPENDIX A WAN INTERFACE CABLE SPECIFICATIONS

APPENDIX B WAN TERMS AND ACRONYMS

WPIM-E1 LOCAL MANAGEMENT GUIDE

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems WPIM-E1 Local Management Guide This manual explains how to use Local Management to control and manage the Cabletron Systems WPIM-E1. Appendix A of this guide provides connector and pinout information for the WPIM-E1.

The WPIM-E1 resides in and provides connectivity/functionality to Cabletron Systems Wide Area Network (WAN) modules such as the BRIM-W6.

Before using this manual you must:

• Install the WPIM-E1 in a Wide Area Network module. Refer to the appropriate manual (i.e., the installation and troubleshooting procedures.

• Setup and access Local Management. Refer to the appropriate MIM, standalone hub, or module User’s Guide for instructions on setting up and accessing Local Management.

BRIM-W6 User’s Guide

) for

1.1 USING THIS MANUAL

Read through this manual completely to familiarize yourself with its content and to gain an understanding of the features and capabilities of the WPIM-E1. You should have a general working knowledge of the following data communications networks and their physical layer components before using the WPIM-E1.

•WAN

• Ethernet and IEEE 802.3

• Token Ring and 802.5

WPIM-E1 LOCAL MANAGEMENT GUIDE

1-1

CHAPTER 1:

INTRODUCTION

The following list brieﬂy explains each chapter of the WPIM-E1 manual:

Chapter 1,

Introduction

, outlines the contents of this manual, describes WPIM-E1 features, lists speciﬁcations, and concludes with a list of related manuals.

Chapter 2,

Local Management

, describes how to use Local Management

to setup the WPIM-E1.

Appendix A,

WAN Interface Cable Speciﬁcations

, provides Cabletron part numbers and connector information for the interface cables used with the WPIM-E1.

Appendix B,

WAN T erms and Acronyms

, is a brief glossary of the terms

used in this book.

1.2 GETTING HELP

If you need additional support related to the WPIM-E1, or if you ha ve an y questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support:

By phone ..........................(603) 332-9400

Monday-Friday; 8am - 8pm Eastern Time

By CompuServe...............GO CTRON from any ! prompt

By Internet mail ...............support@ctron.com

By FTP.............................ctron.com (134.141.197.25)

anonymous

, Password:

your email address

1.3 WPIM-E1 FEATURES

The WPIM-E1 extends the functionality of your Wide Area Network module to allow remote connectivity using WAN services such as E-1 or Fractional E-1.

The WPIM-E1 provides an E-1 interface that includes a built-in Channel Service Unit/Digital Service Unit (CSU/DSU) for direct connection to an E-1 line. This WPIM supports both Full E-1 or Fractional E-1 using 56 or 64 Kbps timeslots.

1-2

WPIM-E1 LOCAL MANAGEMENT

WPIM-E1 SPECIFICATIONS

WAN Protocols

As of this printing, the module in which the WPIM-E1 is installed supports the following WAN protocols (refer to the Release Notes included with the host MIM or standalone hub for a list of current protocols):

• Point to Point Protocol (LCP ) as deﬁned by RFC 1661

• Point to Point Protocol (BNCP) as deﬁned by RFC 1638

• Point to Point Protocol LAN Extender (PPP/LEX)

• Frame Relay as deﬁned by RFC 1490

MIB Support

Refer to the Release Notes included with the host MIM or standalone hub for a list of all MIBs supported by the WPIM-E1. For information about how to extract and compile individual MIBs, contact Cabletron Systems Technical Support (see

Getting Help

1.4 WPIM-E1 SPECIFICATIONS

This section describes the environmental speciﬁcations and safety/approval requirements for the WPIM-E1. Cabletron Systems reserves the right to change these speciﬁcations at any time without notice.

Environmental Requirements

Operating Temperature: +5° to +40°C (41° to 104°F)

Non-operating Temperature: -30

Operating Humidity: 5% to 95% (non-condensing)

Safety

This unit meets the safety requirements of EN60950.

EMI

This unit meets the EMI requirements of EN55022 Class A and VCCI Class I.

to +90°C (-22° to 194°F)

WPIM-E1 LOCAL MANAGEMENT GUIDE

1-3

CHAPTER 1:

EMC

INTRODUCTION

This unit meets the EMC requirements of EN50082-1 including IEC 801-2 (ESD), IEC 801-3 (Radiated Susceptibility), and IEC 801-4 (EFT/B).

It is the responsibility of the person who sells the system to

WARNING

which the WPIM-E1 will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions.

1.5 RELATED MANUALS

Refer to the manual included with the host Wide Area Network module (e.g., the

BRIM-W6 User’s Guide

other technical data provided in this manual. Refer to the MIM, standalone hub or module User’s Guides and/or Local Management Guides for Local Management setup information. This manual references procedures in these manuals, where appropriate, but does not repeat them.

) to supplement the procedures and

1-4

WPIM-E1 LOCAL MANAGEMENT

CHAPTER 2

LOCAL MANAGEMENT

This Chapter explains how to conﬁgure the WPIM-E1 through Local Management. The

Interface Conﬁguration screen

WAN Physical Conﬁguration screen

appear as Local Management menu selections after you install the WPIM-E1 into a WAN module such as the BRIM-W6 and then install the BRIM into a MIM or standalone hub. Refer to the MIM or standalone hub User’s Guide for instructions about how to setup and access Local Management.

Sections of this chapter include:

• The WAN Physical Conﬁguration screen 2.1

• The WAN Interface Conﬁguration screen 2.2

and the

WAN

• Full T-1 Conﬁguration Using PPP 2.3

• Fractional T-1 Conﬁguration Using PPP 2.4

• Frame Relay Conﬁguration 2.5

• LEX Conﬁguration 2.6

Read Sections 2.1 and 2.2 to gain an understanding of the WPIM-E1 Local Management screens. Sections 2.3 through 2.6 provide examples for setting up the WPIM-E1 for full or fractional E-1 in a PPP environment, or for conﬁguring the WPIM-E1 for LEX or Frame Relay.

Navigate through the WPIM Local Management Screens by

TIP

using the following keyboard commands: SPACEBAR to toggle between selections in a field. ENTER (RETURN) to implement a selection. Arrow keys to move up, down or sideways within the screen.

WPIM-E1 LOCAL MANAGEMENT GUIDE

2-1

CHAPTER 2:

LOCAL MANAGEMENT

2.1 THE WAN PHYSICAL CONFIGURATION SCREEN

To access the WAN Physical Conﬁguration screen from the Feature Selection screen, use the arrow keys to highlight the WAN Conﬁguration option, then press ENTER. The screen shown in Figure 2-1 appears.

<host name> Local Management Flash Image Version: xx.xx.xx

WAN PHYSICAL CONFIGURATION

WPIM 1 WPIM 2

Type: E1 BRIM #: 1 Mode: [Primary] Active: Yes Interfaces: 002-033

Type: SY BRIM #: 1 Mode: [Secondary] Active: No Interfaces: 034

WPIM 1 Line Configuration E1 Timeslot View: [Active]

E1 Line Coding: [HDB3] E1 Frame Type: [E1-CRC] E1 TX Clock Source: [Loop-Timing] E1 Network Loopback: [None]

SAVE WAN INT CONFIG RETURN

[WPIM 1]

01-08

09-16

17-24

25-32

WPIM 1 Timeslot Configuration

N/A 000 000 000 000000 000 000

000 000 000 000 000000 000 000

1484_01

Figure 2-1. WAN Physical Configuration Screen

2.1.1 WAN Physical Conﬁguration Screen Fields

The following sections describe WAN Physical Conﬁguration screen ﬁelds and instructions for setting them. The WAN Physical Conﬁguration screen lets you conﬁgure the WPIM or “Physical Interface.”

Cabletron offers a variety of WPIMs. The following Physical Conﬁguration screen examples show the WPIM-E1 and the WPIM-SY. Select the WPIM you wish to conﬁgure by using the arrow keys to highlight the WPIM command ﬁeld at the bottom of the screen. Press the SPACEBAR to select the appropriate WPIM, then press ENTER. The WAN Conﬁguration screen automatically displays unique conﬁguration ﬁelds for each WPIM as shown in Figure 2-1.

2-2

WPIM-E1 LOCAL MANAGEMENT GUIDE

THE WAN PHYSICAL CONFIGURATION SCREEN

The WAN Physical Conﬁguration screen displays the following information for each WPIM:

WPIM

1-4

Displays conﬁguration information for as many as four WPIMs.

Each BRIM-W6 supports two WPIMs. Some of Cabletron’s

NOTE

products (e.g., the NBR-620 or the EMM-E6) will support two BRIM-W6 modules providing connectivity for as many as four WPIMs. Only one WPIM per BRIM-W6 can be active.

Type

Displays the WPIM type.

BRIM #

Displays the BRIM slot in which the WPIM resides.

Mode

Displays the WPIM mode. Toggles between Primary and Secondary. In a device such as the BRIM-W6 where two WPIMs are utilized b ut only one can be active at a given time, the second WPIM installed or recognized defaults to Secondary.

Active

Displays the status of the WPIM, Yes and No.

Interfaces

Displays the interfaces available to each WPIM.

2.1.2 WPIM-E1 Conﬁguration Fields

The conﬁguration ﬁelds displayed on the Physical Conﬁguration screen shown in Figure 2-1 vary depending on the type of WPIM. The examples in this Local Management Guide cover the WPIM-E1. Each Cabletron WPIM has a Local Management Guide that provides speciﬁc conﬁguration guidelines and examples.

WPIM-E1 LOCAL MANAGEMENT GUIDE

2-3

CHAPTER 2:

LOCAL MANAGEMENT

The service provider determines the settings for the following

NOTE

E1 Timeslot View

fields. Consult the service provider for the correct settings.

Displays the status of the T imeslot Conﬁguration Table. The selections for this ﬁeld toggle between Active and New. The Active setting displays current Timeslot Conﬁguration table settings. The default setting is

Active

. The New setting allows you to change Timeslot Conﬁguration

table settings. The default setting for the Timeslot Conﬁguration table is

000

all Timeslots not assigned (

E1 Line Coding

Displays the line coding for the physical E-1 line. The selections toggle between HDB3 and AMI. The default setting for this ﬁeld is

HDB3

E1 Frame Type

Displays the E-1 Frame type. The selections toggle between E1 and E1-CRC. The default setting for this ﬁeld is

E1 Tx Clock Source

E1-CRC

Displays the E-1 Transmit Clock Source. The selections for this ﬁeld toggle between Loop-Timing (Extracted Line Data) and Local-Timing (Internal Clock). The default setting for this ﬁeld is

E1 Network Loopback

Loop-Timing

Network Loopback is a testing procedure that segments the line and allows the user to isolate faults. The selections for this ﬁeld toggle between None and Line-Loop. In Line-Loop all 32 channels are looped back to the E-1 line.The WPIM-E1 must be in Loop-Timing mode to use this option. The default setting is

None

2-4

WPIM-E1 LOCAL MANAGEMENT GUIDE

THE WAN PHYSICAL CONFIGURATION SCREEN

2.1.3 The WPIM Timeslot Conﬁguration T able

The WPIM Timeslot Conﬁguration Table allows the user to conﬁgure the way in which the Cabletron WAN module uses the E-1 line. The conﬁguration table consists of 32 T imeslots. Only 31 of the Timeslots are available for use because the ﬁrst Timeslot is used by the device to

N/A

transmit framing data. #1. You must assign each of the remaining 31 Timeslots an number (for example, 002 for an active Interface number or 000 if the Timeslot is not used). When you lease an entire E-1 line, you can use all 31 Timeslots (the full E-1 bandwidth). If you lease only a fraction of the E-1, the service provider tells you which Timeslots to use.

The WPIM-E1 always uses the first Timeslot (Timeslot #1) to

NOTE

transmit framing data. A full E-1 line with 32 Timeslots has 31 customer-usable Timeslots.

(Not Available) always appears in Timeslot

Interface

You can utilize Timeslots any way you choose. The WPIM-E1 supports Time Division Multiplexing (TDM) allowing channelization of circuits (Timeslots) within the public network. For example, if your BRIM-W6 has access to a full E-1 (31 customer-usable Timeslots), and you want to communicate with two other sites, your conﬁguration might look like Figure 2-2.

SITE #2

SITE #1

Telco Cloud

32 Timeslots

(31 available to customer)

1484_02

23 Timeslots

SITE #3

8 Timeslots

Figure 2-2. Sample Timeslot Configuration

WPIM-E1 LOCAL MANAGEMENT GUIDE

2-5

CHAPTER 2:

LOCAL MANAGEMENT

Figure 2-3 shows a sample conﬁguration for three sites. Of the 32 Timeslots, Site #1 uses the ﬁrst T imeslot for transmitting framing data, 23 Timeslots to communicate with Site #2 and the remaining 8 Timeslots to communicate with Site #3. This conﬁguration varies tremendously depending on how the service provider maps out the E-1 Timeslots. Your service provider will tell you which Timeslots are active and where they go in the cloud.

005

N/A

005

000

005

000

005

000

005

000

005

000

005

000

005

000

005

000

01-08

N/A

005

01-08

09-16

17-24

25-32

09-16

17-24

25-32

005

006

005

006

005

006

SITE #1

005

006

005

006

005

006

005

006

01-08

09-16

17-24

25-32

N/A

006

000

006

000

SITE #2

006

000

006

000

006

000

006

000

006

000

006

000

SITE #3

1484_03

Figure 2-3. Sample Configuration

Site #1 is using the full E-1, so all the Timeslots must have an Interface assignment. Site #2 and Site #3 only use a fraction of the E-1, but the total quantity of Timeslots must match those of Site #1. Unused Timeslots receive an Interface number of 000.

The Interface numbers of Site #1, Site #2 and Site #3 do not

NOTE

have to match. Only the quantity of T imeslots must match (the service provider assigns the Timeslots).

2-6

WPIM-E1 LOCAL MANAGEMENT GUIDE

THE WAN INTERFACE CONFIGURATION SCREEN

2.2 THE WAN INTERFACE CONFIGURATION SCREEN

This section describes the features of the WAN Interface Conﬁguration screen. Access the screen by using the arrow keys to highlight the WAN Int Conﬁg option at the bottom of the Physical Conﬁguration screen, then press ENTER. The WAN Interface Conﬁguration screen shown in Figure 2-4 appears.

<host name> Local Management Flash Image Version: xx.xx.xx

WAN INTERFACE CONFIGURATION

Interface Number: [002] Data Compression: [NO] Max Xmit Unit: 0 Line Coding: [NONE] Active Protocol: [NONE]

SAVE

RETURN

Figure 2-4. WAN Interface Configuration Screen

PT# IF# LID STATE 001

001 Enet UP

002 003

004 005 006

007 008

009 010

011 012

013 014 015

016

PT# IF# LID STATE

017 018

019 020

021 022

023 024 025

026 027 028

029 030

031 032

1484_04

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-7

CHAPTER 2: LOCAL MANAGEMENT

2.2.1 WAN Interface Conﬁguration Screen Fields

This section describe the WAN Interface Conﬁguration screen ﬁelds.

Interface Number

Displays the active Interface Numbers. Use this ﬁeld to conﬁgure the Interface Numbers you assigned to the Timeslots on the WAN Physical Conﬁguration screen.

Data Compression

Displays the status of Data Compression. This field displays YES or NO. The default setting is

Max Xmit Unit

User-conﬁgured ﬁeld that displays the maximum packet size that can be transmitted on the selected Interface. The default values are 8191 for PPP and 4095 for Frame Relay.

NO.

Line Coding

Displays the Line Coding for Timeslots associated with this interface. This ﬁeld displays JBZS, INV-HDLC, or None. The default setting is None.

Active Protocol

Displays the active OSI Layer protocol. This ﬁeld displays None, FR (Frame Relay), or PPP (Point-to-Point). The default setting is None.

If you select PPP, the following ﬁeld appears:

PPP Type: This field displays BNCP or LEX.

If you select FR, the following ﬁeld appears:

FR LMP: This field displays NO LMI, Q.933-A or

T1.617-D. This field is normally set to Q.933-A (the European standard). The NO LMI setting is for specialized applications in which no Frame Relay Link Management is available or required.

2-8 WPIM-E1 LOCAL MANAGEMENT GUIDE

THE WAN INTERFACE CONFIGURATION SCREEN

If NO LMI is selected, the following ﬁelds are displayed:

DLCI Address: This field can be set to values from 0-1023. The

values 0-15 and 1008-1022 are reserved DLCI addresses.

Circuit State: Toggles between Active, Inactive and Invalid.

PT#

Displays the application ports (bridge ports) available from the host platform to the WAN. If the active protocol is PPP, Local Management assigns only one application port per interface number (IF#). If the activ e protocol is Frame Relay, Local Management assigns the available WAN bridge ports from the host platform, one per DLCI.

You can assign WAN application ports to the 31 interfaces for the PPP conﬁguration that suits your needs. In a Frame Relay conﬁguration, you can assign all WAN application ports to one interface. In this example, the remaining 30 interfaces would not have WAN application ports available.

The quantity of application ports for a Frame Relay network is determined by the quantity of DLCIs (Data Link Connection Identiﬁers) assigned to that Interface. This is determined either manually or by the LMP (Link Management Protocol).

IF#

Displays the Interface that is associated with the application port.

LID

Displays the Link Identiﬁer. If the active protocol is Frame Relay, the Data Link Connection Identiﬁer is displayed. If the active protocol for this interface is PPP, then PPP appears in this ﬁeld.

STATE

Displays the status of the application port. If the active protocol is Frame Relay , this ﬁeld displays the status as Acti ve, Inacti ve, or Disabled (for No LMI). If the active protocol is PPP, this ﬁeld displays UP (for active) or DOWN (for inactive).

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-9

CHAPTER 2: LOCAL MANAGEMENT

2.3 FULL E-1 CONFIGURATION USING PPP

This section provides step-by-step instructions for conﬁguring the WPIM-E1 to use a full E-1 circuit in a PPP environment. This simpliﬁed example assumes the setup shown in ﬁgure 2-5 using a MicroMMAC hub with a BRIM-W6 containing a WPIM-E1 at Site #1. Conﬁgurations may vary depending on the hub.

SITE 1

32 Timeslots

(31 customer-usable)

Telco Cloud

SITE 2

32 Timeslots

(31 customer-usable)

1484_05

Figure 2-5. Full E-1 Configuration

The line conﬁguration information shown in Table 2-1 must be supplied by the service provider.

Table 2-1. Telco Configuration Information

Configuration Information

Required By User

Line Coding HDB3 or AMI

Configuration Information

Supplied By Service Provider

Frame Type E1 or E1-CRC Clock Source Loop Timing or Local Timing

2-10 WPIM-E1 LOCAL MANAGEMENT GUIDE

FULL E-1 CONFIGURATION USING PPP

2.3.1 WPIM-E1 Physical Conﬁguration

Begin the WPIM-E1 conﬁguration by accessing the WAN Physical Conﬁguration screen through Local Management (Figure 2-1). Access the WAN Physical Conﬁguration screen from the Feature Selection screen that ﬁrst appears when you enter Local Management. Use the arrow keys to highlight the WAN Conﬁguration option, then press ENTER. The screen shown in Figure 2-1 appears. Proceed with the following steps:

1. Use the arrow keys to highlight the [WPIM] field at the bottom of the

screen. Press the SPACEBAR to select the WPIM being configured, then press ENTER.

2. Use the arrow keys to highlight Timeslot View. Press the

SPACEBAR to select New, then press ENTER. The cursor moves to Timeslot #2 of the Timeslot Configuration Table.

3. Insert an interface number (see NOTE below) into every Timeslot.

Type the number, press ENTER, then use the arrow keys to highlight the next Timeslot field. Exit this field by using the arrow keys. The cursor automatically moves to the E1 Line Coding field.

The value assigned to the Timeslots is the interface being used

NOTES

for WAN communication. The available interface range is displayed on the WAN Physical Configuration screen (see Figure 2-1). You may insert any of the available interface numbers into the Timeslots.

In the example shown in Figure 2-1, the interface range for the MicroMMAC with a WPIM-E1 in slot one of the BRIM-W6 is 2-33. Although any of these values may be used, Cabletron Systems recommends using the first available interface number (in this example interface #2).

The following three steps are based on information supplied by the service provider. Consult the service provider for the correct settings.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-11

CHAPTER 2: LOCAL MANAGEMENT

4. Use the arrow keys to highlight E1 Line Coding. Press the SPACEBAR to select HDB3 or AMI, then press ENTER.

5. Use the arrow keys to highlight E1 Frame Type. Press the SPACEBAR to select E1 or E1-CRC, then press ENTER.

6. Use the arrow keys to highlight E1 Tx Clock Source. Press the SPACEBAR to select Local (no clock source provided by telephone company) or Loop (clock source provided by telephone company), then press ENTER.

If you are using a Local clock source, set only one end of the

CAUTION

circuit for Local, the other end must be set for Loop.

7. Use the arrow keys to highlight E1 Network Loopback. Press the SPACEBAR to select None, then press ENTER.

8. Use the arrow keys to highlight the SAVE command, then press ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

9. Access the WAN Interface Configuration screen by using the arrow keys to highlight the WAN Int Config option, then press ENTER.

2.3.2 WPIM-E1 Interface Conﬁguration

This screen is accessed through the WAN Physical Conﬁguration screen. Refer to Figure 2-4 and proceed with the following steps to conﬁgure the WAN Interface through Local Management.

1. Set the WAN connection Interface Number by typing the same number into the Interface Number field that was input into the Timeslots in the WAN Physical Configuration screen, then press ENTER (see NOTE on page 2-11).

2. Unless the user sets the Max Xmit Unit, the WPIM-E1 automatically sets the Max Xmit Unit to 8191 (default) after the active protocol (PPP) is selected.

2-12 WPIM-E1 LOCAL MANAGEMENT GUIDE

FULL E-1 CONFIGURATION USING PPP

3. If the E1 Line Coding is HDB3 on the previous screen:

a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select None, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select BNCP, then press ENTER.

4. If the E1 Line Coding is AMI on the previous screen:

a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select INV-HDLC, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select BNCP, then press ENTER.

5. Use the arrow keys to highlight the SAVE command, then press

ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

Upon saving this screen, the interface just configured is

NOTE

assigned to an application port (PT#) in the table on the right hand side of the screen.

The WAN conﬁguration is complete. It takes up to 60 seconds for the WAN Interface to come out of standby and for communications to begin.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-13

CHAPTER 2: LOCAL MANAGEMENT

2.4 FRACTIONAL E-1 CONFIGURATION USING PPP

This section provides step-by-step instructions for conﬁguring the WPIM-E1 to use a fractional E-1 circuit in a PPP environment. This example assumes the setup shown in ﬁgure 2-6 using two MicroMMAC hubs each with a BRIM-W6 containing a WPIM-E1. Conﬁgurations may vary depending on the hub. In a fractional E-1 setup, only a portion of the 32 Timeslots or DS-0’s are used.

The terms DS-0 (Digital Signal, level 0) and Timeslot are

NOTE

used synonymously in this guide to represent a standard 64,000 bit/second channel.

SITE #1

with BRIM-W6

16 Timeslots

SITE #2

with BRIM-W6

16 Timeslots

Telco Cloud

1484_06

Figure 2-6. Fractional E-1 Configuration

2-14 WPIM-E1 LOCAL MANAGEMENT GUIDE

FRACTIONAL E-1 CONFIGURATION USING PPP

The line conﬁguration information shown in Table 2-2 must be supplied by the service provider.

Table 2-2. Telco Configuration Information

Configuration Information

Required By User

Line Coding HDB3 or AMI Frame Type E1 or E1-CRC Clock Source Loop Timing or Local Timing

DS-0’s (Timeslots)

Configuration Information

Supplied By Service Provider

Timeslots being used for each end of the circuit

2.4.1 WPIM-E1 Physical Conﬁguration

Begin the WPIM-E1 conﬁguration by accessing the WAN Physical Conﬁguration screen through Local Management (Figure 2-1). Proceed with the following steps:

1. Use the arrow keys to highlight the [WPIM] field at the bottom of the

screen. Press the SPACEBAR to toggle the field to the WPIM being configured, then press ENTER.

2. Use the arrow keys to highlight Timeslot View. Press the

SPACEBAR to select New, then press ENTER. The cursor moves to Timeslot #2 of the Timeslot Configuration Table.

3. Insert an interface number (see NOTE below) into every Timeslot

being used (in the example shown in Figure 2-6, 16 Timeslots are being used, the rest have zeros in them). Type the number, press ENTER, then use the arrow keys to highlight the next Timeslot field. Exit this field by using the arrow keys.The cursor automatically moves to the E1 Line Coding field.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-15

CHAPTER 2: LOCAL MANAGEMENT

The value assigned to the Timeslots is the interface being used

NOTES

for WAN communication. The available interface range is displayed on the WAN Physical Configuration screen (see Figure 2-1). You may insert any of the available interface numbers into the Timeslots.

The following three steps are based on information supplied by the service provider. Consult the service provider for the correct settings.

4. Use the arrow keys to highlight E1 Line Coding. Press the SPACEBAR to select HDB3 or AMI, then press ENTER.

5. Use the arrow keys to highlight E1 Frame Type. Press the SPACEBAR to select E1 or E1-CRC, then press ENTER.

If you are using a Local clock source, set only one end of the

CAUTION

circuit for Local, the other end must be set for Loop.

7. Use the arrow keys to highlight the SAVE command, then press ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

8. Access the WAN Interface Configuration screen by using the arrow keys to highlight the WAN Int Config option and then press ENTER.

2-16 WPIM-E1 LOCAL MANAGEMENT GUIDE

FRACTIONAL E-1 CONFIGURATION USING PPP

2.4.2 WPIM-E1 Interface Conﬁguration

This screen is accessed through the WAN Physical Conﬁguration screen. Proceed with the following steps to conﬁgure the WAN Interface through Local Management.

1. Set the WAN connection Interface Number by typing the same

number into the Interface Number field that was input into the Timeslots in the WAN Physical Configuration screen, then press ENTER. (see NOTE on page 2-16).

2. Unless the user sets the Max Xmit Unit, the WPIM-E1 automatically

sets the Max Xmit Unit to 8191 (default) after the active protocol (PPP) is selected.

3. If the E1 Line Coding is HDB3 on the previous screen:

a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select None, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select BNCP, then press ENTER.

4. If the E1 Line Coding is AMI on the previous screen:

a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select INV-HDLC, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select BNCP, then press ENTER.

5. Use the arrow keys to highlight the SAVE command, then press

ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-17

CHAPTER 2: LOCAL MANAGEMENT

Upon saving this screen, the interface just configured is

NOTE

assigned to an application port (PT#) in the table on the right hand side of the screen.

The WAN conﬁguration is complete. It takes up to 60 seconds for the WAN Interface to come out of standby and for communications to begin.

2.5 FRAME RELAY CONFIGURATION

This section provides step-by-step instructions for conﬁguring the WPIM-E1 to use an E-1 circuit in a Frame Relay environment. This example assumes the setup shown in ﬁgure 2-7 using two MicroMMAC hubs each with a BRIM-W6 containing a WPIM-E1. Conﬁgurations may vary depending on the hub.

SITE 1

32 Timeslots

(31 customer-usable)

Telco Cloud

SITE 2

32 Timeslots

(31 customer-usable)

1484_05

Figure 2-7. Frame Relay Configuration

The following information must be supplied to the service provider.

• LMP type: Q.933-A

2-18 WPIM-E1 LOCAL MANAGEMENT GUIDE

FRAME RELAY CONFIGURATION

The line conﬁguration information shown in Table 2-3 must be supplied by the service provider.

Table 2-3. Telco Configuration Information

Configuration Information

Required By Customer

Line Coding HDB3 or AMI Frame Type E1 or E1-CRC Clock Source Loop Timing or Local Timing

DSO’s (Timeslots)

Information Supplied By

Service Provider

Timeslots being used for each end of the circuit

2.5.1 WPIM-E1 Physical Conﬁguration

Begin the WPIM-E1 conﬁguration by accessing the WAN Physical Conﬁguration screen through Local Management (Figure 2-1). Proceed with the following steps:

1. Use the arrow keys to highlight the [WPIM] field at the bottom of the

screen. Press the SPACEBAR to select the WPIM being configured, then press ENTER.

2. Use the arrow keys to highlight Timeslot View. Press the

SPACEBAR to select New, then press ENTER. The cursor moves to Timeslot #2 of the Timeslot Configuration Table.

3. Insert an interface number (see NOTE below) into every Timeslot

being used. Type the number, press ENTER, then use the arrow keys to highlight the next Timeslot field. Exit this field by using the arrow keys. The cursor automatically moves to the E1 Line Coding field.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-19

CHAPTER 2: LOCAL MANAGEMENT

The value assigned to the Timeslots is the interface being used

NOTES

for WAN communication. The available interface range is displayed on the WAN Physical Configuration screen (see Figure 2-1). You may insert any of the available interface numbers into the Timeslots.

The following three steps are based on information supplied by the service provider. Consult the service provider for the correct settings.

4. Use the arrow keys to highlight E1 Line Coding. Press the SPACEBAR to select HDB3 or AMI, then press ENTER.

5. Use the arrow keys to highlight E1 Frame Type. Press the SPACEBAR to select E1 or E1-CRC, then press ENTER.

If you are using a Local clock source, set only one end of the

CAUTION

circuit for Local, the other end must be set for Loop.

7. Use the arrow keys to highlight the SAVE command, then press ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

8. Access the WAN Interface Configuration screen by using the arrow keys to highlight the WAN Int Config option and then press ENTER.

2-20 WPIM-E1 LOCAL MANAGEMENT GUIDE

FRAME RELAY CONFIGURATION

2.5.2 WPIM-E1 Interface Conﬁguration

This screen is accessed through the WAN Physical Conﬁguration screen. Proceed with the following steps to conﬁgure the WAN Interface through Local Management.

1. Set the WAN connection Interface Number by typing the same

number into the Interface Number field that was input into the Timeslots in the WAN Physical Configuration screen, then press ENTER. (see NOTE on page 2-20).

2. Use the arrow keys to highlight Line Coding. Press the SPACEBAR

to select None, then press ENTER.

3. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select FR, then press ENTER.

4. Use the arrow keys to highlight FR LMP. Press the SPACEBAR to

select Q.933-A, then press ENTER.

5. Use the arrow keys to highlight the SAVE command, then press

ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

Upon saving this screen, the interface just configured is

NOTE

assigned to an application port (PT#) in the table on the right hand side of the screen once the device starts communicating with the service provider’s switch.

The WAN conﬁguration is complete. Communications between the WPIM-E1 and the service provider’s switch takes approximately 1-2 minutes to begin. A status of Inactive appears until both ends of the PVC (Permanent Virtual Circuit) are conﬁgured. Once both end devices have negotiated link management with the switches, the status ﬁeld reads Active.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-21

CHAPTER 2: LOCAL MANAGEMENT

2.6 LEX CONFIGURATION

This section provides step-by-step instructions for conﬁguring the WPIM-E1 to operate in a LEX environment. LEX (LAN Extender) is a Cisco Systems protocol that allows a core router to communicate to a remote site using PPP.

The line conﬁguration information shown in Table 2-4 must be supplied by the service provider.

Table 2-4. Telco Configuration Information

Configuration Information

Required by User

Line Coding HDB3 or AMI Frame Type E1 or E1-CRC Clock Source Loop Timing or Local Timing

Configuration Information

Supplied by Service Provider

2.6.1 WPIM-E1 Physical Conﬁguration

Begin the WPIM-E1 conﬁguration by accessing the WAN Conﬁguration screen through Local Management (Figure 2-1). Access the WAN Physical Conﬁguration screen from the Feature Selection screen that ﬁrst appears when you enter Local Management. Use the arrow keys to highlight the WAN Conﬁguration option, then press ENTER. The screen shown in Figure 2-1 appears. Proceed with the following steps:

1. Use the arrow keys to highlight the [WPIM] field at the bottom of the screen. Press the SPACEBAR to select the WPIM being configured, then press ENTER.

2. Use the arrow keys to highlight Timeslot View. Press the SPACEBAR to select New, then press ENTER. The cursor moves to Timeslot #2 of the Timeslot Configuration Table.

2-22 WPIM-E1 LOCAL MANAGEMENT GUIDE

LEX CONFIGURATION

3. Insert an interface number (see NOTE below) into every Timeslot

being used. Type the number, press ENTER, then use the arrow keys to highlight the next Timeslot field. Exit this field by using the arrow keys.The cursor automatically moves to the E1 Line Coding field.

The value assigned to the Timeslots is the interface being used

NOTES

for WAN communication. The available interface range is displayed on the WAN Physical Configuration screen (see Figure 2-1). You may insert any of the available interface numbers into the Timeslots.

The following three steps are based on information supplied by the service provider. Consult the service provider for the correct settings.

4. Use the arrow keys to highlight E1 Line Coding. Press the

SPACEBAR to select HDB3 or AMI, then press ENTER.

5. Use the arrow keys to highlight E1 Frame Type. Press the

SPACEBAR to select E1 or E1-CRC, then press ENTER.

6. Use the arrow keys to highlight E1 Tx Clock Source. Press the

SPACEBAR to select Local (no clock source provided by telephone company) or Loop (clock source provided by telephone company), then press ENTER.

If you are using a Local clock source, set only one end of the

CAUTION

circuit for Local, the other end must be set for Loop.

7. Use the arrow keys to highlight the SAVE command, then press

ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-23

CHAPTER 2: LOCAL MANAGEMENT

8. Access the WAN Interface Configuration screen by using the arrow keys to highlight the WAN Int Config option and then press ENTER.

2.6.2 WPIM-E1 Interface Conﬁguration

This screen is accessed through the WAN Physical Conﬁguration screen. Refer to Figure 2-4 and proceed with the following steps to conﬁgure the WAN Interface through Local Management.

2. Unless the user sets the Max Xmit Unit, the WPIM-E1 automatically sets the Max Xmit Unit to 8191 (default) after the active protocol (PPP) is selected.

3. If the E1 Line Coding is HDB3 on the previous screen: a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select None, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select LEX, then press ENTER.

4. If the E1 Line Coding is AMI on the previous screen: a. Use the arrow keys to highlight Line Coding. Press the

SPACEBAR to select INV-HDLC, then press ENTER.

b. Use the arrow keys to highlight Active Protocol. Press the

SPACEBAR to select PPP, then press ENTER.

c. Use the arrow ke ys to highlight PPP T ype. Press the SPACEB AR

to select LEX, then press ENTER.

2-24 WPIM-E1 LOCAL MANAGEMENT GUIDE

LEX CONFIGURATION

5. Use the arrow keys to highlight the SAVE command, then press

ENTER. The message “Save Done!” appears and Local Management saves the changes to memory.

Upon saving this screen, the interface just configured is

NOTE

assigned to an application port (PT#) in the table on the right hand side of the screen.

The WAN conﬁguration is complete. It takes up to 60 seconds for the WAN Interface to come out of standby and for communications to begin.

WPIM-E1 LOCAL MANAGEMENT GUIDE 2-25

APPENDIX A

WAN INTERFACE CABLE SPECIFICATIONS

This appendix provides the Cabletron Systems part numbers and connector information for the WPIM-E1 Line Interface Cables.

Table A-1. Cabletron WPIM-E1 Cable Part Numbers

Interface Cable

20 foot E1 Line Interface Cable 9372095-20

E1 Line Interface Cable 9372095-L

a. Standard 20 foot E1 Line Interface Cable. b. (L denotes length required in feet or meters). For example: 9372095-3

denotes a 3 foot cable; 9372095-3M denotes a 3 meter cable.

Cabletron Part Number

Table A-2. WPIM-E1 Connector Information

Cabletron interface cable part number 9372095-L Description E1 line interface cable Connector 1 RJ45 Connector 2 RJ45

WPIM-E1 LOCAL MANAGEMENT GUIDE A-1

APPENDIX A: WAN INTERFACE CABLE SPECIFICATIONS

Table A-3. WPIM-E1 RJ45 Connector Pin Assignments

Pin Signal

1 Receive Ring 2 Receive Tip 3 Shield Ground 4 Transmit Ring 5 Transmit Tip 6 Shield Ground 7 Not Used 8 Not Used

Table A-4. RJ45 DTE Pin Assignments

Pin Signal

1 Receive Ring 2 Receive Tip 3 Shield Ground 4 Transmit Ring 5 Transmit Tip 6 Shield Ground 7 Not Used 8 Not Used

Table A-5. RJ45 Network Pin Assignments

Pin Signal

1 Receive Ring 2 Receive Tip 3 Not Used 4 Transmit Ring 5 Transmit Tip 6 Not Used 7 Not Used 8 Not Used

A-2 WPIM-E1 LOCAL MANAGEMENT GUIDE

APPENDIX B

WAN TERMS AND ACRONYMS

This appendix provides deﬁnitions for WAN terms and acronyms.

AMI Alternate Mark Inversion, line coding used with both E-1 and

T-1. A digital 1 is encoded as a “mark” (pulse) and a 0 is encoded as a “space.” The marks alternate polarity.

ANSI American National Standards Institute, the US member of the

ISO.

Bearer (B) Channel

Bipolar Violation

B8ZS Binary 8-Zero Substitution, line coding utilized with ESF

BRI Basic Rate Interface, minimum rate ISDN subscriber interface,

BRIM Cabletron Systems Bridge Router Interface Module. Expands

CRC Cyclic Redundancy Check, an algorithm or process used to

A 64 Kbps channel used with BRI and PRI ISDN services.

The occurrence of two successive pulses of the same polarity in a bipolar signal.

(Expanded Super Frame). Insures the ones density requirement for digital T-carrier facilities in the public network, while allowing 64 Kbps clear data per channel.This encoding method is not supported by some Telcos.

provides 2 B + 1 D channels (two 64 Kbps “B” (Bearer) channels and one 16 Kbps “D” (Data) signaling channel for a total of 144 Kbps).

the physical connectivity of a host device.

identify corrupted packets in the transmission link.

CSU Channel Service Unit, a device that terminates the local

loop/digital channel on a customer’s (DSU) premises. The CSU connects to a DSX-1 interface on the CPE.

WPIM-E1 LOCAL MANAGEMENT GUIDE B-1

APPENDIX B: WAN TERMS AND ACRONYMS

DCE Data Communications Equipment, a device such as a modem

that connects the communications circuit with the end device (see DTE).

Data (D) Channel

A 16 Kbps channel used with BRI and PRI services for signaling and control.

D4 D4 Framing, a popular framing format in T-1. Uses 12 T-1

Frames to identify both the channel and the signaling bit.

DLCI Data Link Connection Identiﬁer, a unique virtual circuit identi-

ﬁer used in Frame Relay. Identiﬁes a given frame as being from a particular logical link. The DLCI has only local signiﬁcance.

DSU Digital Service Unit, converts RS-232 or other terminal

interfaces to DSX-1 (T-1) interface.

DS-0 Digital Signal, level 0, a standard 64,000 bit/second channel.

Synonymous with “Timeslot.”

DTE Data Terminal Equipment, equipment that originates and

terminates data transmission such as a computer or printer (see DCE).

E-1 European digital signal level 1. Similar to T-1 but provides 32

channels (2.048 Mbps) instead of 24 channels (1.544 Mbps).

ESF Extended Super Frame. A new T-1 framing standard (see D4

framing) that uses 24 T-1 frames, thus allowing individual identiﬁcation of the channel and signaling bits.

Fractional T -1 Use of a portion (less than the full 24 channels) of a T-1 line. Frame Relay A network protocol that allows for many point-to-point virtual

connections over a single access channel.

HDB3 High Density Bipolar 3, used with E-1, a bipolar coding

method that does not allow more than 3 consecutive zeros.

HDLC High-Level Data Link Control, layer 2 (link layer) full-duplex

protocol derived from SDLC.

INV. HDLC A form of zero suppression in which all zeros in the HDLC

packet are changed to ones and all ones are changed to zeros.

B-2 WPIM-E1 LOCAL MANAGEMENT GUIDE

APPENDIX B: WAN TERMS AND ACRONYMS

ISDN Integrated Services Digital Network. Allows point-to-point

connections at 64 Kbps or 128 Kbps when necessary and disconnects the line when not in use. With this service the user only pays for the time connected.

JBZS Jam Bit-Zero Suppression, a form of zero suppression that

places a one in the seventh bit of a timeslot. Reduces the effective throughput to 56 Kbps.

LEX LAN Extender, a Cisco Systems protocol used to internetwork

a host-based router with a remote switch.

LMP Link Management Protocol, used in Frame Relay. Allows the

device to gather information about the DLCIs (Data Link Connection Identiﬁers) See T1.617-D, Q.933-A.

Local Timing Timing for digital transmission circuit is internally generated

by a source within the equipment. Usually used for short haul private lines. In this case one CSU must be set for Local (internal) timing and the CSU at the other end of the line must be set for Loop (recovered) timing to create a master-slave situation.

Loop Timing Timing for digital transmission circuit is recovered from the

received data, not generated internally by a source within the equipment. This is the typical situation when using public lines.

MIM Media Interface Module, Cabletron Systems products designed

to ﬁt in a Multi Media Access Center (MMAC) hub.

MUX Multiplexer, an electronic device that allows two or more sig-

nals to pass over one communications circuit.

PPP Point-to-Point Protocol, provides a method for transmitting

datagrams over serial point-to-point links.

PRI Primary Rate Interface, an ISDN service providing 23 “B”

(Bearer) channels of 64 Kbps and one 64 Kbps “D” (Data) channel for signaling and control.

PVC Permanent Virtual Circuit, a virtual circuit that provides the

equivalent of a dedicated private line service.

Q.933-A Q.933 Annex A, an ITU link management protocol speciﬁca-

tion used in Frame Relay.

WPIM-E1 LOCAL MANAGEMENT GUIDE B-3

APPENDIX B: WAN TERMS AND ACRONYMS

SDLC Synchronous Data Link Control, layer 2 (link layer) protocol

developed by IBM for SNA connectivity. Basis for HDLC.

SNA Systems Network Architecture, data communication network

architecture developed by IBM in the 1970’s.

T-1 A Bell System term that refers to the physical carrier used to

transmit a digital signal at 1.544 Mbps.

T1.617-D T1.617 Annex D, an ANSI link management protocol speciﬁ-

cation used in Frame Relay.

TDM Time Division Multiplexing, a technique in which separate

data or voice signals are transmitted simultaneously over a single communications medium based on time interleaving.

Timeslot A standard 64,000 bit/second channel. Synonymous with DS-0

(Digital Signal, level 0).

WAN Wide Area Network, a network spanning a large geographic

area.

WPIM WAN Physical Interface Module, Cabletron Systems modules

that provide connectivity/functionality for WAN modules such as the BRIM-W6.

B-4 WPIM-E1 LOCAL MANAGEMENT GUIDE

Enterasys WPIM-E1 Network Manual

Specifications and Main Features

Frequently Asked Questions

User Manual