Digital Link DL3800 DS1 User's Guide

DL3800 DS1 Inverse Multiplexer User Guide Part 098-10380-01 Rev JFebruary 1999

Table of Contents -x Top Menu 5-5 Select Remote/Select Local 5-7 Display Menu 5-7 Node (Common Equipment) Status 5-8 DTE Status 5-9 NET (1-8) Status

5-20 DL3800 DS1 Inverse Multiplexer User Guide—February 19995Local Terminal XON/XOFF With the Flow Control feature On, the terminal can request that t

Front Panel Interface 5-215Note that both the NODE HW (HARDWARE) REV and the NODE SW (SOFTWARE) REV are set at the factory and cannot be changed.PARIT

5-22 DL3800 DS1 Inverse Multiplexer User Guide—February 19995DTE Configuration MenuThis menu allows the user to set various conÞgurable items for the D

Front Panel Interface 5-235NET N ConfigThe NETN CONFIG MENU allows the user to change various conÞgurable items common to all T1 network ports. As with

5-24 DL3800 DS1 Inverse Multiplexer User Guide—February 19995NETWORK THRESHOLDSThis menu allows the user to enable/disable the automatic FALLBACK feat

Front Panel Interface 5-255The user can set the threshold value for Minor (MI) and Major (MJ) alarms, where exceeding the Minor alarm threshold will g

5-26 DL3800 DS1 Inverse Multiplexer User Guide—February 19995To turn a Major Alarm ON or OFF, use the Up and Down arrows to get the speciÞc alarm in t

6-16Diagnostics 6EQUIPMENT RETURN AND REPAIRIf faulty equipment is suspected, perform the tests in this section. If, after performing these tests, th

6-2 DL3800 DS1 Inverse Multiplexer User Guide—February 19996Figure 6-1 TESTS MENU DTE/Network Loopback Test Use the DTE/NETWORK Loopback test to verif

Diagnostics 6-36Payload Loopback and Line Loopback TestsUse the PAYLOAD Loopback and LINE Loopback tests to verify the proper operation of the DL3800

Table of Contents -xiExternal Clock Interface A-1DTE Interface A-2COMM Port A-2NMS Port (SNMP) A-2Front Panel A-3Diagnostics A-3Power A-3Environmenta

6-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19996It is also possible to verify the path from the DTE through the T1 line to the remote-end

Diagnostics 6-56The NETWORK T1 port LED’s on the DL3800 never illuminate.Make sure the T1 cable from your service provider is connected to the DL3800.

6-6 DL3800 DS1 Inverse Multiplexer User Guide—February 19996The NETWORK T1 LEDs on an DL3800 are flashing green.Make sure a valid DTE device is connect

Diagnostics 6-76The connected DTE device shows intermittent errors.Run a DTE/NET Loopback to verify the physical connection between the local DTE devi

6-8 DL3800 DS1 Inverse Multiplexer User Guide—February 19996You cannot access the DL3800 from a terminal.The terminal must be running a VT100 or compa

A-1ASpeciÞcations AT1 NETWORK INTERFACEEXTERNAL CLOCK INTERFACEParameter SettingInterface Type DSX-1 Standard T1 CSU OptionalNumber of Ports 2, 4, 6 o

A-2 DL3800 DS1 Inverse Multiplexer User Guide—February 1999ADTE INTERFACECOMM PORT NMS PORT (SNMP)Item InterfaceElectrical Interface HSSI or V.35/RS-4

Specifications A-3AFRONT PANELDIAGNOSTICSPOWERItem InterfaceDisplay 16 Character AlphanumericKey Pad Four KeysDTE Status LEDs TD, RD, RTS, CTS, DTR,

A-4 DL3800 DS1 Inverse Multiplexer User Guide—February 1999AENVIRONMENTALPHYSICAL /CONNECTORSItem TemperatureOperating Temperature 0oC to 50oC Storage

B-1BPinouts BTERMINAL CONNECTIONDTE CONNECTORSTable B-1 COMM and NMS Port Pin AssignmentsPIN SIGNAL2 SD Send Data to Terminal3 RD Receive Data from T

Table of Contents -xii

B-2 DL3800 DS1 Inverse Multiplexer User Guide—February 1999BLA-Loopback Circuit A From DTE 10 35SD-Send DataFrom DTE 11 36LB -Loopback Cir

Pinouts B-3BORNREDFNC8NCBLKREDXV917GRNBLKYAA1512BLUREDUW2411BLUGRNCNC4NCDRAIN ATable B-4 DB-25 to RS-449 DTE Connector Pin AssignmentsTWISTED PAIR RS4

B-4 DL3800 DS1 Inverse Multiplexer User Guide—February 1999BT1 NETWORK PIN ASSIGNMENTSThe network connector is a DA-15 connector. The assignments for

Pinouts B-5BExternal Clock Connector Pin AssignmentsA DE-9 connector is provided on the DL3800 rear panel for connection to an External Clock. Pin As

B-6 DL3800 DS1 Inverse Multiplexer User Guide—February 1999BDTE Clock RatesTable B-8 DTE Clock RatesNETWORKS DTE CLOCK RATE, MBPSB8ZS1 1.5282 3.0563 4

C-1CFactory Default Settings CTable C-1 Unit SettingsUnit SettingALARM ENABLE DisabledAUTOMATIC BACKUP 5 minutes after each database changeFRONT PANEL

C-2 DL3800 DS1 Inverse Multiplexer User Guide—February 1999CTable C-3 Network SettingsNetwork SettingALARM MaskACTIVE/RESTORE MODE Never UseFRAME ESFL

Factory Default Settings C-3CWRITE COMMUNITY STRING PublicTRAP COMMUNITY STRING Public SNMP BAUD RATE 9600BITS & PARITY 8 bits, No paritySTOP BITS

C-4 DL3800 DS1 Inverse Multiplexer User Guide—February 1999C

G-5GGlossary GABAMA designation for 22 gauge, 110 ohm, plastic insulated, twisted pair Western Electric cable normally used in central ofÞces.AIS (Ala

-xiiiList of FiguresFigure 1-1 The DL3800 DS1 Inverse Multiplexer 1-1Figure 2-1 DL3800 Inverse Multiplexer 2-1Figure 2-2 DL3800 Functional Schem

G-6 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GbandwidthThe data-carrying capacity of a transmission medium, usually measured in Hertz (H

Glossary G-7GCCCITTInternational Telegraph and Telephone Consultative Committee. central ofÞce (CO)The phone company switching facility or center; usu

G-8 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GCRC (Cyclic Redundancy Check) An error checking scheme used to check the received data. Th

Glossary G-9GDCE (Data Circuit-Terminating Equipment)Equipment that is either a part of the network, an access point to the network, a network node, o

G-10 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GDSU/CSU (Data Service Unit/Channel Service Units)The pair of communications devices that

Glossary G-11GESF (Extended Superframe Format)A new T1 framing standard used in Wide Area Networks (WANs). With this format 24 frames, instead of 12 a

G-12 DL3800 DS1 Inverse Multiplexer User Guide—February 1999Gframe groundA metallic layer acting as a shield, consisting of tape, braid, wire or sheat

Glossary G-13GLOS (Loss of Signal)Occurs when an input signal is detected as all zeros for 176 bit times.loss A reduction in signal strength, expresse

G-14 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GnetworkAn interconnection of computer systems, terminals, or data communications faciliti

Glossary G-15GRRD (Receive Data)A data port signal.receiverThe receiver synchronizes the framing pattern, separates the frame bits from the payload da

List of Figures -xivFigure 4-12 Network Thresholds ConÞguration 4-23Figure 4-13 SYSYTEM UTILITIES MENU Figure 4-25Figure 4-14 SOFTWARE DOWNLOAD

G-16 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GSSCR (Serial Clock Receive)A unipolar clock from the DCE signal. A data port signal.SCT (

Glossary G-17GSNMP (Simple Network Management Protocol)A widely-used network monitoring and control protocol. Data is passed from SNMP agents (hardwar

G-18 DL3800 DS1 Inverse Multiplexer User Guide—February 1999GTRAPA mechanism by which a device automatically sends an alarm for certain network events

-xvList of TablesTable 4-1 Main Menu 4-4Table 4-2 Alarms and Status 4-6Table 4-3 STATISTICS MENU Error Types 4-10Table 4-4 Alarm Level

List of Tables -xviTable B-1 COMM and NMS Port Pin Assignments B-1Table B-2 HSSI DTE Connector Pin Assignments B-1Table B-3 DB-25 to V.35 DTE

-xviiPrefaceThe DL3800 DS1 Inverse Multiplexer User Guide provides the information you need to install, test, operate, and manage the DL3800. AUDIENCE

-xviii DL3800 DS1 Inverse Multiplexer User Guide—February 1999CONVENTIONSThis section describes the conventions used to delineate speciÞc types of inf

Preface -xixTypographyDigital Link manuals delineate the names of Þles, commands, and actions by using the fonts and typefaces described in the follow

C OPYRIGHT Copyright © 1999, Digital Link CorporationWorld copyright reserved. No part of this publication may be stored in a retrieval system, tran

-xx DL3800 DS1 Inverse Multiplexer User Guide—February 1999DIGITAL LINK TECHNICAL SUPPORTIf you should experience difÞculty with the setup and/or oper

Preface -xxiSEND US YOUR COMMENTSPlease let us know if this user guide meets your requirements. Does the manual answer your questions?Is the manual th

-xxii DL3800 DS1 Inverse Multiplexer User Guide—February 1999

1-11Quick Install Guide 1PURPOSEThis chapter is designed to be a quick reference for the setup and conÞguration of the DL3800 DS1 Inverse Multiplexer

1-2 DL3800 DS1 Inverse Multiplexer User Guide—February 19991¥ HSSI or 155-10082-01(HSSI) (Model DL1404-10)¥ M-34 to DB-25 cables(V.35) or 155-00903-01

Quick Install Guide 1-31 Network ConfigurationSet up a port for each T1 line you plan to use. Alarm should be set to REPORT. ACTIVE/RESTORE MODE shoul

1-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19991

2-12Introduction 2SYSTEM OVERVIEWThe DL3800 DS1 Inverse Multiplexer bridges the gap between T1 and T3 data services by providing T1 multiplexing of mu

2-2 DL3800 DS1 Inverse Multiplexer User Guide—February 19992service, execute the manual restore command on the remote unit Þrst. Then execute the manu

Introduction 2-32Signal FlowThe DL3800 is conÞgured by the user for the number of T1 signals to be used for transmission. The DL3800 will provide a s

Digital Link shall not be liable for failure to perform its obligations if such results directly or indirectly from, or is contributed to by, any act

2-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19992interface. To allow for jitter and wander speciÞcations, the read address counter will be

Introduction 2-52Overhead FunctionsThe overhead functions consist of a controller, front panel, two RS232 communication interfaces (terminal and netwo

2-6 DL3800 DS1 Inverse Multiplexer User Guide—February 19992DL3800 SYSTEM FEATURES¥ Advanced Management CapabilitiesThe DL3800 supports a built-in SNM

Introduction 2-72APPLICATIONThe DL3800 DS1 Inverse Multiplexer is designed to transport slightly more than 12 Mbps of data over eight grouped T1 line

2-8 DL3800 DS1 Inverse Multiplexer User Guide—February 19992

3-13Installation 3 DL3800 INSTALLATION PROCEDURE1. Unpack and inspect the DL3800 for damage that might have occurred during shipment. If necessary,

3-2 DL3800 DS1 Inverse Multiplexer User Guide—February 19993a. ConÞgure COMM PORT See ÒUnit ConÞgurationÓ on page 4-13 (ASCII terminal)b. ConÞgure

Installation 3-33Figure 3-1 DL3800 Rear PanelPOWER CABLES AND CONNECTIONSAC Power ConnectionAn AC power cord is supplied with the DL3800 to provide 11

3-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19993Connect the -48 V wire to the screw terminal labeled Ñ. Attach the ReturnÊ(+) wire to the

Installation 3-53ASCII TERMINAL AND SNMP CONNECTIONThe DL3800 is accessed by an ASCII terminal or SNMP Management System workstation through direct, d

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits a

3-6 DL3800 DS1 Inverse Multiplexer User Guide—February 19993sure to provide a valid IP address to the DL3800. THere can be up to two active telnet ses

4-14Terminal Interface 4LOG IN/LOG OFFEach DL3800 is equipped with an integrated RS-232 ASCII user interface that can be accessed through the COMM POR

4-2 DL3800 DS1 Inverse Multiplexer User Guide—February 199944. To log on to another DL3800 on the same daisy chain, simply type Ctrl-X, followed by a

Terminal Interface 4-34Figure 4-1 INVERSE MULTIPLEXER MAIN MENUThe product type is a DL3800 Digital Inverse Multiplexer. The software revision is 3.XX

4-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19994INVERSE MULTIPLEXER MAIN MENU COMMANDSWhen a DL3800 is Þrst powered up, the Main Menu (Fig

Terminal Interface 4-54Figure 4-2 Main Menu with remote unit selectedALARMS AND STATUSThe ALARMS AND STATUS MENU is a view only screen that allows the

4-6 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Figure 4-3 ALARMS AND STATUS MENUFollowing are the Alarm and Status items (severity) that

Terminal Interface 4-74* Active Sync-Net 6 CTS OnNot Active Sync-Net 7 RLSD OnExcessive Delay Sync-Net 8 TM OnSet Code Detected No Net Sync CA OnReset

4-8 DL3800 DS1 Inverse Multiplexer User Guide—February 19994StatisticsThis menu item allows the user to access the performance STATISTICS SUB-MENU of

Terminal Interface 4-94To view the performance statistics of any one T1 port, highlight that port and press Enter. The NET STATISTICS for that port (

Malfunction of the equipment: In the event this equipment should fail to operate properly, disconnect the unit from the telephone line. Try using ano

4-10 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Figure 4-6 STATISTICS MENU (Screen #2) Table 4-3 STATISTICS MENU Error Types Parameter D

Terminal Interface 4-114Event HistoryThis screen allows the user to review and clear the alarm and status history of the DL3800. To view the EVENT HI

4-12 DL3800 DS1 Inverse Multiplexer User Guide—February 19994To clear the report of all History Events, move the highlight bar to CLEAR HISTORY, and p

Terminal Interface 4-134Figure 4-8 CONFIGURATION MENUTo access any of the CONFIGURATION SUB-MENUS, highlight the desired item and press the Enter key

4-14 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Figure 4-9 UNIT CONFIGURATION MENU Table 4-5 Node Configuration Options Option ActionDate

Terminal Interface 4-154Unit Number Move the Highlight bar to Unit Number, and enter a number between 0 and 9999. Note: Each unit must be set to a dif

4-16 DL3800 DS1 Inverse Multiplexer User Guide—February 19994DTE ConfigurationThis menu allows the user to conÞgure certain parameters of the DTE, incl

Terminal Interface 4-174Clock This item allows the user to enable either the SCT or SCTE leads, and to set the transmit (Tx), and receive (Rx) to Norm

4-18 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Network ConfigurationThis menu item allows the user to set various parameters of each of t

Terminal Interface 4-194Figure 4-11 Network Configuration Screen (DSX-1 Mode) Table 4-7 NETWORK CONFIGURATION MENU Options Parameter Description/Act

vi DL3800 DS1 Inverse Multiplexer User Guide—February 1999

4-20 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Framing Format This allows the user to select either ESF or D4 (SF) as the Framing Format

Terminal Interface 4-214JIT (CSU Only) This allows the user to set Jitter Attenuation to either the Transmit (TX) or Receive (RX) side of the line. To

4-22 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Primary Clock Source This allows the user to select either the Primary Clock Source, tran

Terminal Interface 4-234Network ThresholdsThis menu allows the user to enable/disable the automatic FALLBACK feature, and set the various Network Alar

4-24 DL3800 DS1 Inverse Multiplexer User Guide—February 19994To change the number of errored consecutive seconds that will cause that T1 line to go ou

Terminal Interface 4-254Figure 4-13 SYSYTEM UTILITIES MENU Figure Software DownloadThis selection allows the user to choose the desired mode for upgra

4-26 DL3800 DS1 Inverse Multiplexer User Guide—February 19994¥ Binary Image with Xmodem¥ Binary Image with KermitMake the proper RS-232 connection bet

Terminal Interface 4-274Software Download OptionsImmediate Software Activation (Enable/Disable)The IMMEDIATE SOFTWARE ACTIVATION mode is controlled fr

4-28 DL3800 DS1 Inverse Multiplexer User Guide—February 19994RAM Software Options RAM Software Options - Query RAM SoftwareThis feature determines whe

Terminal Interface 4-294TFTP Software DownloadIf immediate software activation is enabled on the target unit, the software is downloaded to the target

-vii Table of Contents Audience xvii Organization xvii Conventions xviii Symbols xviii Typography xix Digital Link Technical Support xx Returning a U

4-30 DL3800 DS1 Inverse Multiplexer User Guide—February 19994To delete the entire unit conÞguration, select DELETE ENTIRE UNIT CONFIGURATION from the

Terminal Interface 4-314To access the LOGIN CONFIGURATION MENU, move the highlight bar to LOGIN CONFIGURATION in the NODE MAIN MENU and press the Ente

4-32 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Table 4-8 Login Configuration Options Parameter DescriptionFull Access Class Allows the us

Terminal Interface 4-334SNMP Configuration Through the SNMP CONFIGURATION MENU, the user conÞgures the Network Manager (NMS) port on the rear panel of

4-34 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Unit IP Subnet Mask The Unit IP Subnet Mask is a 32-bit quantity that identifies which bit

Terminal Interface 4-354To update the SNMP database with all the changes made, move the highlight bar to CONFIRM, and press the Enter key. Changes ca

4-36 DL3800 DS1 Inverse Multiplexer User Guide—February 19994However, it is important to note that the remote IMUXÕs ÒUnit IP AddressÓ parameter must

Terminal Interface 4-374Figure 4-17 is an example of the TESTS MENU. The individual loopbacks and operation of the menu are described below in the te

4-38 DL3800 DS1 Inverse Multiplexer User Guide—February 19994Payload LoopbackThe payload loopback is used to verify proper T1 network operation of the

Terminal Interface 4-394Manual Network RestorationThe DL3800Õs T1 ports are normally set to auto restore. However, you may choose to individually res

Table of Contents -viii DL3800 System Features 2-6 DL3800 System Benefits 2-6 Application 2-7 Chapter 3, Installation 3-1 DL3800 Installation Proce

4-40 DL3800 DS1 Inverse Multiplexer User Guide—February 19994LogoutThis allows the user to manually logoff the unit, instead of waiting for the provis

5-15Front Panel Interface 5GENERALThe front panel features a 16 character vacuum ßuorescent display and four buttons that help the user to move throug

5-2 DL3800 DS1 Inverse Multiplexer User Guide—February 19995BUTTON OVERVIEWThe DL3800 has four front panel buttons. The unit generally responds to a b

Front Panel Interface 5-35Front Panel LEDsTable 5-1 Front Panel LEDs Indication DescriptionTest Test In Progress LEDOff No tests are in progress.Solid

5-4 DL3800 DS1 Inverse Multiplexer User Guide—February 19995Access Levels And Protected ModeFront panel access can be limited by placing the DL3800 in

Front Panel Interface 5-55Protected Mode is ignored in the Þrst sixty seconds after powering the unit up. When in Protected Mode, the Test Menu does

5-6 DL3800 DS1 Inverse Multiplexer User Guide—February 19995Figure 5-1 Front Panel Top Level MenuThis menu loop may also be entered at any time by pre

Front Panel Interface 5-75The ConÞguration Menu is used to view and change the unit's conÞguration parameters, date and time, network interface p

5-8 DL3800 DS1 Inverse Multiplexer User Guide—February 19995Node (Common Equipment) StatusThis display shows the status of the unit. NODE STATUS is

Front Panel Interface 5-95If one of more errors are detected, one or more of the following messages will appear. Use the up and down arrow buttons to

Table of Contents -ix DTE Configuration 4-16 Network Configuration 4-18 Network Thresholds 4-23 Save Configuration 4-24 System Utilities 4-24 Softwar

5-10 DL3800 DS1 Inverse Multiplexer User Guide—February 19995Pressing the down arrow from any of these displays will step you through the last 96 15-m

Front Panel Interface 5-115TEST MENUThe Test Menu is used to activate network loopbacks and DTE loopbacks. The Test Menu is only available when the un

5-12 DL3800 DS1 Inverse Multiplexer User Guide—February 19995The Test Menu is broken down into two types of sub-menus: DTE TESTS (one menu) and NETWOR

Front Panel Interface 5-135DTE TESTSOnly one loopback can be initiated through the DTE TESTS Menu, a bi-directional DTE/NET Loopback.To access the DTE

5-14 DL3800 DS1 Inverse Multiplexer User Guide—February 19995of the Test Menu and then, using the other buttons, go into the Monitor or the ConÞgurati

Front Panel Interface 5-155Line LoopbackThe network loopback is used to verify the operation of the T1 network connection (T1 through T8). The networ

5-16 DL3800 DS1 Inverse Multiplexer User Guide—February 19995The DL3800 conÞguration can only be changed when the unit is not in the Protected Mode. I

Front Panel Interface 5-175Node ConfigurationThe NODE CONFIG MENU allows the user to conÞgure the NODE ID, NODE NUMBER, DATE & TIME and *NODE COMM

5-18 DL3800 DS1 Inverse Multiplexer User Guide—February 19995conÞrm each change. The next letter or number space will then begin "blinking"

Front Panel Interface 5-195The NODE CONFIGURATION MENU is used to conÞgure various parameters of the DL3800, including:Table 5-5 NODE CONFIGURATION ME