ELSA LANCOM Business LC-4X00 User manual

Manual
왎
ELSA LANCOMTM Business
No. 20857/0999

© 1999 ELSA AG, Aachen (Germany)
Whiletheinformationinthismanualhasbeencompiledwithgreatcare,itmaynotbedeemedanassur-
ance of product characteristics. ELSA shall be liable only to the degree specified in the terms of sale
and delivery.
Thereproductionanddistributionofthedocumentationandsoftwaresuppliedwiththisproductandthe
useofitscontentsissubjecttowrittenauthorizationfromELSA. Wereservetherighttomakeanyalter-
ations that arise as the result of technical development.
ELSAisDINENISO9001certified. TheaccreditedTÜVCERTcertificationauthorityhasconfirmedELSA
conformity to the worldwide ISO 9001 standard in certificate number 09 100 5069, issued on June 15,
1998.
Trademarks
Windows®, Windows NT®and Microsoft®are registered trademarks of Microsoft, Corp.
Allothernamesmentionedmaybetrademarksorregisteredtrademarksoftheirrespectiveowners. The
ELSA logo is a registered trademark of ELSA AG.
Subject to change without notice. No liability for technical errors or omissions.
www.elsa.com
Aachen, September 1999
ELSA AG
Sonnenweg 11
52070 Aachen
Germany
ELSA, Inc.
2231 Calle De Luna
Santa Clara, CA 95054
USA

Preface
Thank you for placing your trust in this ELSA product.
Byselectingthe
ELSALANCOM Business youhavechosen arouter whichyoucanuseto
connectlocalareanetworksorsingleworkstations with other networks via ISDN lines.
Thehighestqualitystandardsinmanufacturingandstringentqualitycontrolarethebasis
for high product standards and consistent quality of ELSA products.
Documentation
The accompanying documentation comprises:
쮿Installation Guide
Hardware installation and configuration examples
쮿Manual
Extended description of the router functions and operating modes
쮿CD containing electronic documentation
Reference manual, complete description of the menu
Ouronlineservices(Internetserverwww.elsa.com)areavailabletoyouaroundtheclock
shouldyouhave any queriesregardingthetopicsdiscussedin this manualorrequireany
further support. In the 'Support' file section under 'Know-How', you can find answers to
frequently asked questions (FAQs). The KnowledgeBase also contains a large pool of
information. Current drivers, firmware, tools and manuals can be downloaded at any
time.
The KnowledgeBase can also be found on the CD. Just open the file \Misc\Sup-
port\MISC\ELSASIDE\index.htm.

Content
ELSA LANCOM Business
V
Content
Introduction ..................................................................................................................1
What does a router do?........................................................................................ 1
What does the
ELSA LANCOM Business offer?................................................... 3
The
ELSA LANCOM Business takes the stage..................................................... 8
What does the unit look like?..................................................................... 8
Node or hub?............................................................................................. 11
CE Conformity..................................................................................................... 11
Configuration modes ................................................................................................13
Many paths lead to the
ELSA LANCOM ............................................................. 13
The direct method: outband................................................................................ 13
Requirements for outband configuration.................................................. 14
Outband configuration using
ELSA LANconfig ......................................... 14
Outband configuration using a terminal program..................................... 14
The user-friendly method: inband....................................................................... 15
Requirements for inband configuration.................................................... 15
Alternatively: Address administration with the DHCP server.................. 15
Beginning inband configuration using
ELSA LANconfig ........................... 15
Start up inband configuration using telnet............................................... 16
Remote access: configuration using a dial-up connection................................. 16
This is what you need for remote configuration....................................... 17
This is how you prepare the remote configuration................................... 17
The first remote connection using a dial-up connection (
ELSA LANconfig )17
The first remote connection using a PPP client and telnet....................... 17
Limiting remote configuration................................................................... 18
Configuration commands ................................................................................... 20
New firmware with FirmSafe............................................................................. 21
This is how FirmSafe works...................................................................... 21
How to load new software....................................................................... 22
Configuration using SNMP................................................................................. 24
General...................................................................................................... 24
Accessing tables and parameters using SNMP....................................... 24
The Management Information Base (MIB)............................................... 26
What's happening on the line?........................................................................... 27
Trace outputs............................................................................................ 27
ELSA LANmonitor ...................................................................................... 29

Content
ELSA LANCOM Business
VI
Operating modes and functions ............................................................................. 33
Security for your configuration........................................................................... 33
Password protection................................................................................. 34
Login barring............................................................................................. 34
Access control via TCP/IP......................................................................... 34
Security for your LAN.......................................................................................... 35
Security check........................................................................................... 35
Callback .................................................................................................... 36
The hiding place—IP masquerading (NAT, PAT)...................................... 37
Call charge management.................................................................................... 37
Charge-based connection limits............................................................... 37
Time-dependent connection control......................................................... 38
Settings in the charge module.................................................................. 38
ISDN connections............................................................................................... 39
Name list................................................................................................... 39
Interface settings...................................................................................... 40
Router interface settings.......................................................................... 41
LANCAPI interface settings...................................................................... 41
Layer list.................................................................................................... 42
Round-robin list......................................................................................... 43
Channel list............................................................................................... 43
PPP list....................................................................................................... 44
Script......................................................................................................... 44
Call acceptance......................................................................................... 45
Number list................................................................................................ 45
Leased lines and backup procedures.................................................................. 45
Setting up fixed connections.................................................................... 46
Dial-up via GSM.................................................................................................. 48
Point-to-point protocol........................................................................................ 48
The protocol.............................................................................................. 49
The PPP list................................................................................................ 50
Everything ok? Checking the line with LCP............................................... 51
Assigning IP addresses via PPP................................................................ 52
Callback functions..................................................................................... 53
Fast ELSA callback.................................................................................... 56
Callback as specified in RFC 1570 (PPP LCP extensions).......................... 56
Channel bundling with MLPPP.................................................................. 57
IPX routing........................................................................................................... 58
Naming IPX addresses.............................................................................. 59
Information about the LAN....................................................................... 59
IPX routing table........................................................................................ 59
What happens when data is transmitted on an IPX network?................. 60

Content
ELSA LANCOM Business
VII
RIP and SAP tables.................................................................................... 61
So many routers around here.................................................................... 61
Redundant routes...................................................................................... 62
Exponential backoff................................................................................... 62
IPX packet filters....................................................................................... 62
IP routing............................................................................................................. 64
The IP routing table................................................................................... 64
TCP/IP packet filters.................................................................................. 67
Proxy ARP.................................................................................................. 68
Local routing.............................................................................................. 68
Dynamic routing with IP RIP...................................................................... 69
IP masquerading (NAT, PAT)..................................................................... 71
DNS forwarding........................................................................................ 73
Policy-based routing.................................................................................. 74
Automatic address administration with DHCP................................................... 74
The router as DHCP server........................................................................ 75
DHCP –'on', 'off' or 'auto'?....................................................................... 75
How are the addresses assigned?............................................................ 76
Configuring the router as a DHCP server.................................................. 79
DNS server.......................................................................................................... 81
What does a DNS server do?.................................................................... 81
Setting up the DNS server........................................................................ 82
NetBIOS proxy..................................................................................................... 84
To the point: What is NetBIOS?................................................................ 84
Handling of NetBIOS packets................................................................... 85
Which preconditions must be fulfilled?.................................................... 86
Linking two Microsoft Networks via ISDN............................................... 88
Dial-up procedure for a remote access station........................................ 90
Search and Find: the Network Neighborhood.......................................... 90
IP pooling for dial-up access............................................................................... 92
Office communications and
LANCAPI................................................................ 92
ELSA LANCAPI.......................................................................................... 92
ELSA CAPI Faxmodem......................................................................................... 96
Installation................................................................................................ 97
Faxing with the
ELSA CAPI Faxmodem..................................................... 97
The least-cost router........................................................................................... 97
Workshop .................................................................................................................103
Configuration using
ELSA LANconfig and the wizards........................... 103
Configuration without wizards................................................................ 103
Which device are you using?.................................................................. 104
Additional information............................................................................ 104
Internet applications......................................................................................... 104

Content
ELSA LANCOM Business
VIII
Internet access for all PCs on the LAN................................................... 105
Intranet with its own Web server on the Internet.................................. 109
LAN to LAN couplings....................................................................................... 114
Networks connected with the IP router............................................................ 115
Networks connected with the IPX router................................................ 120
Remote access.................................................................................................. 124
Remote access with TCP/IP.................................................................... 125
The least-cost router......................................................................................... 130
Appendix ...................................................................................................................137
Technical data................................................................................................... 137
Pin assignments................................................................................................ 138
Warranty conditions......................................................................................... 139
Declaration of conformity................................................................................. 141
Glossary ....................................................................................................................143
Index ..........................................................................................................................151
Description of the menu options (on CD only) .....................................................R1
Status.................................................................................................................. R3
Display and keyboard................................................................................ R4
Status/Connection.................................................................................... R5
Status/Current-time.................................................................................. R5
Status/Operating-time.............................................................................. R5
Status/WAN-statistics.............................................................................. R6
Status/LAN-statistics................................................................................ R8
Status/PPP-statistics................................................................................. R9
Status/IPX-statistics............................................................................... R17
Status/TCP-IP-statistics.......................................................................... R22
Status/IP-router-statistics....................................................................... R28
Status/Config-statistics.......................................................................... R30
Status/Queue-statistics.......................................................................... R30
Status/Connection-statistics.................................................................. R31
Status/Info-connection........................................................................... R32
Status/Layer-connection......................................................................... R33
Status/Call-info-table............................................................................. R33
Status/Remote-statistics........................................................................ R34
Status/S0-bus......................................................................................... R35
Status/Channel-statistics....................................................................... R35
Status/Time-statistics............................................................................. R36
Status/LCR-statistics.............................................................................. R37
Status/Delete-values.............................................................................. R37
Setup................................................................................................................. R37
Setup/WAN-module......................................................................................... R38

Content
ELSA LANCOM Business
IX
Setup/LAN-module................................................................................. R48
Setup/IPX-module................................................................................... R49
Setup/TCP-IP-module.............................................................................. R57
Setup/IP-router-module.......................................................................... R61
Setup/SNMP-module.............................................................................. R69
Setup/DHCP-module............................................................................... R70
Setup/NetBIOS-module.......................................................................... R72
Setup/Config-module.............................................................................. R74
Setup/
LANCAPI -module.......................................................................... R76
Setup/LCR-module.................................................................................. R77
Setup/DNS-module................................................................................. R78
Setup/Time-module................................................................................ R79
Firmware........................................................................................................... R80
Other................................................................................................................. R82
Novell SAP numbers (on CD only) ........................................................................R83
TCP/IP ports (on CD only).......................................................................................R87
ELSA LANCOM Business internal (on CD only) .................................................R91
Script processing.............................................................................................. R91
General.................................................................................................... R91
The script list........................................................................................... R92
CompuServe select................................................................................. R92
Online trace outputs......................................................................................... R93
General.................................................................................................... R93
Control of trace outputs.......................................................................... R94
Examples for control of trace outputs..................................................... R95
Supported protocols and functions......................................................... R95
Policy-based routing....................................................................................... R105
General.................................................................................................. R105
Examples............................................................................................... R106

Content
ELSA LANCOM Business
X

Introduction
ELSA LANCOM Business
1
Introduction
The current use of modern communication is making Internet and Intranet applications
more and more important for companies in various industries. Online services are
increasingly being used for professional purposes. Company branch offices are being
interconnected to enable fast communications between different sites, and
telecommuting is gaining increasing importance.
All these applications are making the use of ISDN router solutions more attractive than
ever. ISDN routers from ELSA connect local networks with the Internet and act as a
communications center for handling fax and voice mail services in small and medium-
sized companies.
The routers also connect local networks with other LANs (Local Area Networks) and
provide access to company data via their remote access function.
What does a router do?
Arouterconnectslocalnetworks(LANs)andindividualPCstoformaWideAreaNetwork
(WAN). Thisallows any computer in this WANto access the computers and serviceson
the entire network, depending on its access privileges. The router does this by seeking
out a path over which data can be exchanged between the computers. This path is
available in the form of an ISDN connection.
Connection to the Internet is a particularly widespread form of network connection. If
the local network in a company is connected with the network of an Internet service
provider, all computers in the LAN will be able to access the services and sites on the
World Wide Web.
But routers are capable of more. Using a special interface called the
ELSA LANCAPI ,
modern office communications functions such as fax, telephone answering machine,
online banking etc. can be provided on the entire local network. The corresponding
communications programs forward their data via the
LANCAPI to the router which then
takes care of the data transmission. Equipping the individual workstations with their
own data communications equipment—a costly, high-maintenance scenario—thus
becomes superfluous.
Therouter is incorporated intothenetworkin the same wayasanynormal PC. Any data
traveling on the network cable, therefore, is seen by the router, too. It automatically
determines whether or not the data needs to be transmitted to another network. If
necessary, it establishes the connection to the destination network. Of course, a
dedicated line does away with the process of establishing a connection.
When precisely should the router be used?

Introduction
ELSA LANCOM Business
2
Asamatteroffact,wherevercomputersneedtobejoinedtogetherandasimplemodem
operation no longer fits the bill. Here are some example applications:
쮿Internet on the LAN
Many companies are experiencing an increasing demand for Internet access from
allworkstations on theLAN. Onlineresearch, filetransferande-mail arejustsome
of the applications intended to lighten the workload of those working at a PC.
The router links all the workstation computers on your local area network to the
globalInternet. SecurityfeaturessuchasIPmasqueradingnotonlysaveyoumoney
but also shield your network against access from outside.
쮿LAN to LAN coupling
When business is going well, the time eventually comes for a sister company or
subsidiarytobeestablishedintheglobalmarkets. Ofcourse,thebranchoffice,too,
has its own network and must to be kept up-to-date.
LAN to LAN coupling links the individual LANs to form one large network, even if
this means crossing continents. When connecting via a dial-up connection, an
intelligentlinemanagement functiontogetherwithsophisticatedfiltermechanisms
keepsconnectionscostslow. Ofcourse,itisalsopossibletooperateacombination
of leased lines and dial-up connections.
쮿Teleworking using remote access
Theworkofmanyofficeworkersinmodernorganizationsislessandlessdependent
on any definite location—the most important factor here is unimpaired access to
shared and freely available information.
Remoteaccessis the key to this. The router onthelocalnetworkatthe head office
enables colleagues to telecommute from their home offices and traveling staff to
access the office while on the road. The
ELSA LANCOM naturally also does
everythingnecessary to protect the company's data holdings during remote access:
the callback function uses the names and call numbers entered to provide access
to specified users only. And telephone charges are calculated at head office,
simplifying the billing process.
쮿Office communications using
LANCAPI
Faxing directly from within applications, voice mail with different announcements
according to the time of day, banking without having to leave the office: These
functions are made possible by using the
LANCAPI .
LANCAPI isaspecial formof theCAPI2.0interfacethat applicationssuch as ELSA-
RVS-COM
or ELSA-ZOC can use to access the router.

Introduction
ELSA LANCOM Business
3
쮿Dial-up nodes for Internet providers
With its 4 available S0interfaces, i.e. 8 B channels, the
ELSA LANCOM Business is
also suitable as a dial-up unit for providers. The IP pooling function adds
convenienceto the administration of alarge number of remote stationsthat dial up
connections via the router.
What does the
ELSA LANCOM Business
offer?
The following is an outline of the principal features of the device giving you a quick
overview of its capabilities.
Easy installation
쮿Connect the
ELSA LANCOM to the power supply.
쮿Establish a link to the LAN.
쮿Plug in the ISDN cable.
쮿Switch it on.
쮿Go!
LAN connection
ELSA's ISDN routers work on Ethernet networks. A
ELSA LANCOM Business can be
connected to a (Fast) Ethernet network using the 10/100Base-T port.
WAN connection
The
ELSALANCOM isconnectedtothe S0interface(s)of anISDNBasicRateInterfacein
point-to-multipoint configuration (multi-device terminal) or in point-to-point
configuration (system terminal). The router automatically detects your port type and the
D-channel protocol being used. Switched connections using DSS1 or 1TR6 can also be
used, as can leased-line connections.
Channel bundling and Compression
The device supports static and dynamicchannel bundling via MLPPP and BACP on the
ISDN line. The
ELSA LANCOM Business 4100 supports up to 8 bundled channels. Stac
datacompression (hi/fn) can be used toachieve increases in the data transferrate of up
to 400%.
Multiple-channel management
Four ISDN connections or a total of eight B channels are available when using the
ELSA
LANCOMBusiness4100
. Itis possibletospecifytheorder inwhichthe channelswillbe
usedforeachconnection. Forexample,certainchannelscanbesetasideforRASaccess,
or others enabled for Internet access.

Introduction
ELSA LANCOM Business
4
Status displays
A display and LED indicators on the front and back of your ISDN router allow you to
monitor the ISDN and Ethernet connections and the current line connections, thus
simplifying the process of diagnosing any systems failures.
ELSA LANmonitor
Not only the LEDs give you an indication of the router status. Users of Windows
operating systems have another option. With the
LANmonitor you have status
information of the
ELSA LANCOM permanently on your monitor. For each device on the
local network, the
LANmonitor displays the most important information, e.g.:
쮿Connection status for each B channel
쮿Name of the remote side
쮿The connected unit module (router,
LANCAPI )
쮿Connection duration and transmission rates
쮿Excerpts of the device statistics (e.g. PPP negotiation data)
Additionally, the
LANmonitor allows you to log and save the messages on the PC for
further processing.
Statistics
Thecomprehensivestatisticsfunctionletsyoukeeptrackofyourrouter. Thesestatistics
give you all the information you need on the connections established, for example, so
that you can optimize the configuration of your ISDN router.
Charge monitoring
Subscribingto”Adviceofchargeduringconnection“ontheISDNnetwork(AOCD)allows
you to set the charge units available for a specified period. This puts you in constant
control of your phone bill.
If charge information is not available from your ISDN connection, you can also limit the
active connect time for a specified period. The router will not permit the establishment
of connections once this time has elapsed.
Least-cost routing
Evenifthereisalargeselectionoftelecommunicationsserviceprovidersyoucanalways
usethecheapestlinesusingtheleastcostrouter. Youonlyneedtospecifytheproviders
that have the best rates for your requirements once, then the router will automatically

Introduction
ELSA LANCOM Business
5
(regardless of whether the call is being placed by the router or the LANCAPI ) select the
provider with the best rates.
Automatic time check
Inorder togeneratesoundstatisticsand toselectthe correctconnectionpathsusingthe
least cost router, the device always must have the exact time. It can read the time from
the ISDN network itself. The router's internal time is always compared to ISDN time
either each time a connection is established or each time the device is switched on. Of
course, the time can also be set manually.
Configuration with
ELSA LANconfig
Settingupandconfiguringtheroutertoyourspecificneedsismadequickandeasyinthe
Windows operating systems by the configuration tool supplied,
ELSA LANconfig . Users
ofother operating systems can useany telnet or terminal program. This meansthat you
canaccessthedevicefromtheWAN,fromtheLANordirectlyviayourownconfiguration
interface. TFTP is supported along with SNMP if configuring from the LAN or WAN.
The integrated installation wizards help you to setup the devices in just a few steps.
Intruder protection
Along with password protection and call number recognition (CLIP), the router offers
protection against unauthorized access to the company network by means of a callback
function which only permits a connection to be established to previously defined
telephone connections. Firewall filters and IP masquerading round out the security
concept. Furthermore,loginbarringpreventsany”bruteforceattacks“anddeniesaccess
totherouterafteraconfigurablenumberofloginattemptsusinganincorrectpassword.
Compatibility through PPP
The router uses PPP, a widely used protocol, and other protocols to exchange network
data through point-to-point connections with devices made by other manufacturers.
Remote configuration using PPP
One special configuration feature of the routers from ELSA which cannot and should not
besetuplocallyisitsabilitytobeconfiguredremotelyviatheWindowsDial-UpNetwork.
All you have to do is to plug the new device into the power supply and connect it to the
ISDN Basic Rate Interface. Now you can access the router
using a PPP connection and
configure it from your location. The first time the device is configured, access to it is
secured by a password and thereafter it remains inaccessible to unauthorized callers.
Software update
YourrouterhasaflashROMmemorytoensurethatitssoftwareremainsstateoftheart.
This allows new firmware to be loaded onto the device without the need to open it up.

Introduction
ELSA LANCOM Business
6
Thecurrent version isalwaysavailableto you onouronlinemedia and canbeloadedvia
the LAN, the WAN or the configuration interface.
FirmSafe
There is no risk involved with loading the new firmware: The FirmSafe function enables
two firmware files to be managed on one device device. If the new firmware version
does not function as desired after the upload you can simply revert to the previous
version.
If an error occurs during the upload (e.g. a transmission error) the functioning previous
version is automatically reactivated.
ELSA LANCAPI and ELSA CAPI Faxmodem
Themainadvantagesofusing LANCAPI areeconomic. The LANCAPI isaspecialtypeof
CAPI 2.0 interface through which various communications programs (e.g.
ELSA-RVS-
COM
or ELSA-ZOC ) via the network can access the router.
Any workstation which has been integrated into the LAN (Local Area Network) can use
LANCAPI to give unlimited access to office communication functions such as fax and
EuroFileTransfer. All functions are made available throughout the network without the
need to add hardware to the workstations. This does away with the cost of equipping
workstations with ISDN adapters or modems. The office communications software
simply needs to be loaded onto the individual workstations.
An ISDN fax device is simulated at the workstation so that faxes can be sent. With the
LANCAPI , the PC forwards the fax via the network to the router which establishes the
connection to the recipient.
The
ELSACAPIFaxmodem furthermoreprovidesaWindowsfaxdriver(faxclass 1) as an
interface between the
ELSA LANCAPI and applications, permitting the use of standard
fax programs with an
ELSA LANCOM Business .
DHCP
The
ELSA LANCOM Business has the functions of a DHCP server available to it. Thus
youcandefineacertainrangeofIPaddresseswhichtheDHCPserverthenindependently
assigns to the individual devices on the local network.
When in automatic mode, the
ELSA LANCOM Business can also define all addresses on
the network and assign them to the devices connected to the network.
NetBIOS proxy
ELSA routers are set up especially for the interconnection of Microsoft peer-to-peer
networks. With the integrated routing of IP NetBIOS packets, the linking of Windows
networks becomes child's play. The remote stations relevant for the exchange of data

Introduction
ELSA LANCOM Business
7
areenteredinalisttoensurethatnoteveryNetBIOSpacketresultsintheestablishment
of a connection.
As a NetBIOS proxy, the router answers the queries for known workstations locally to
prevent connections from being established unnecessarily.
DNS server
The
ELSALANCOM Business alsohas thefunctionsof aDNSserver availabletoit. You
can thus create associations between IP addresses and the names of computers or
networks in order to directly provide the correct route for requests for known computer
names.
The DNS server can also access the name and IP information from the DHCP server and
the NetBIOS module.
The DNS server can also serve as an effective filter for the users in your local network.
Access to specified domains can be denied to individual computers or complete
networks.
Dial-up via GSM
ELSA LANCOM Business also permits dial-up connections via GSM mobile telephones.
The router recognizes the call using the V.110 protocol and automatically sets up the
layer in use for this data transfer process. RAS access via GSM and ISDN can thus use
the same layer.

Introduction
ELSA LANCOM Business
8
The
ELSA LANCOM Business
takes the stage
This section introduces the unit's hardware. It covers the unit's display elements and
connection options.
What does the unit look like?
Wewouldfirstliketofamiliarizeyouwiththerouter. Thedisplayandoperatingelements
can be found on the front: a display, several buttons and light-emitting diodes (LEDs).
The display indicates the various operating states and messages issued by the unit.
Operatingstatesandmessagescanbedisplayedinthree different modes. Use the keys
to select the display mode, confirm messages and scroll through the multi-line display.
The precise function of each button for the
ELSA LANCOM 's various operating modes is
described in chapter 'Configuration modes'.
Power/Msg
This LED flashes once when the power supply is switched on. After the self-test, either
an error is output by a flashing light code or the device starts and the LED remains lit.
LAN-TX, -RX,
LAN-Coll, -Link
LAN-FDpx, -Fast
These LEDs show the corresponding network controller status:
Mode
Clr
Off Device off
red 1 x short Boot procedure (test and load) started
red flashing Display of a boot error (flashing light code)
red Device ready for use
red inter. Error message or a charge block prevents outgoing calls
LAN-RX/TX yellow Data packet sent from the device to the LAN or vice versa
LAN Coll red Sending collision

Introduction
ELSA LANCOM Business
9
LAN-Link green Connection to LAN is established and ready
LAN-FDpx green Router is transmitting and receiving data simultaneously
LAN-Fast green
ELSA LANCOM is operating at 100Mbit

Introduction
ELSA LANCOM Business
10
Nowturnthewholethingaroundandtakealookattherear. Beginningagainontheleft-
hand side, you have:
four ISDN S0ports (
ELSA LANCOM Business 4100 )
Status LEDs for the four S0connections:
V.24/RS232 configuration interface
10/100Base-TX for 10-Mbit or 100-Mbit networks
Node/hub selector switch
Reset button, resets the hardware or restores the unit's factory defaults (after
holding for approx. 5 seconds).
Connection for power supply unit
On/Off switch
쐃쐇쐋 쐆쐂쐄쐊쐏
S0status Off Bus not activated
flashing rapidly Bus with D channel active, no TEI assigned
D channel detected, bus not activated
green Bus with D channel active, TEI assigned
S0line Off No call, no connection
flashing slowly
(1x per sec., 2x
or 3x in total)
Incoming call, but router is not responsible
or the router is establishing a connection automatically
flashing rapidly
(3x per sec.) Callhasarrived,routerisresponsiblebuthasnot(yet)seized the line
yellow Connection (being) established