3Com OfficeConnect 3C892A User Manual
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3Com OfficeConnect 3C892A User Manual

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Part No. 984/000026-2
Published January 1999
OfficeConnect
ISDN LAN Modem

User Guide

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Summary of Contents for 3Com OfficeConnect 3C892A

  • Page 1: User Guide

    OfficeConnect ® ISDN LAN Modem User Guide http://www.3com.com/ Part No. 984/000026-2 Published January 1999 ®...
  • Page 2 95052-8145 3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change. 3Com Technologies provides this documentation without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
  • Page 3 There are no user-replaceable fuses or user-serviceable parts inside the unit. If there is a physical problem with the unit that cannot be solved with problem solving actions in this guide, contact the 3Com reseller from whom the equipment was purchased. If the units are stackable, only stack similar units.
  • Page 4 Sollte ein physikalischer Fehler auftreten, der mit den in diesem Handbuch beschriebenen Maßnahmen nicht zu beheben ist, setzen Sie sich mit dem 3Com-Vertreter in Verbindung, bei dem Sie das Gerät erworben haben. Bei stapelfähiger Konstruktion nur gleichartige Einheiten verwenden.
  • Page 5 La unidad no contiene fusibles ni otros componentes que el usuario pueda cambiar o reparar. De producirse problemas cuya resolución no se explique en esta guía, póngase en contacto con el proveedor de 3Com. Si las unidades que posee son apilables, acople las que sean similares entre sí.
  • Page 6 Se si verifica un problema che non si è in grado di risolvere seguendo le istruzioni per la risoluzione dei problemi riportate nel presente manuale, contattare il rivenditore 3Com presso il quale si è acquistata l'unità. Se le unità sono impilabili, impilare solamente unità simili.

  • Page 7: Additional Safety Information

    If any of the following conditions occur, isolate the electricity supply and refer to your 3Com reseller.

  • Page 9: Table Of Contents

    ABLE OF ONTENTS BOUT UIDE How to Use This Guide Conventions Year 2000 Compliance NTRODUCTION Introduction Applications Local Networking with Access to the Internet Local Networking with Access to a Remote Office Local Networking with Access to the Internet and a Remote Office Features ISDN LAN M ODEM...
  • Page 10 ARDWARE ESCRIPTION AND Package Contents Before You Install the ISDN LAN Modem IBM PC or Compatible Requirements Apple Macintosh Requirements Front Panel LED Description Back Panel Connector Description Installing the ISDN LAN Modem Before You Begin Installing the ISDN Cable Connecting to a 10BASE-T Ethernet Port Connecting to Another Ethernet Hub Before You Begin...
  • Page 11 DVANCED ONFIGURATION Before you Begin Setting Up Additional Service Providers ISP versus Private Network When to Select ISP When to Select Private Network Setting Up a Connection to an ISP Before You Begin Setting Up a Connection to the Internet Setting Up a Connection to a Private Network Before You Begin Setting Up a Connection to a Remote LAN...
  • Page 12 UPPLEMENTARY OICE Supplementary Voice Services Before You Begin Call Waiting and Call Hold Call Hold How to Use Call Waiting Disconnecting a Call on Hold Calling Line Identification Restriction Permanent Configuration Malicious Call Identification (MCID) LACING ECEIVING AND Placing Calls Placing a Call Automatically Telephone Number Selection for Data Calls Call Routing Among Service Providers...
  • Page 13 Resetting the ISDN Modem Using a Telephone Reviewing Statistics Understanding System Statistics Understanding ISDN Information Understanding Current Call Information Understanding Last Call Information Understanding Service Provider Information ETWORKING RIMER SING THE USTOM ISDN LAN M ODEM ISDN LAN M ODEM Year 2000 Compliance Ring Cadences Tone Definitions...

  • Page 15: About This Guide

    About This Guide provides an overview of this guide, describes guide conventions, and tells you where to look for specific information. This guide describes how to install and configure the OfficeConnect ISDN LAN Modem and provides descriptions of key applications and networking concepts. These instructions apply to the international version of the product and cover both hardware versions, ISDN U (3C892) and S/T (3C891).

  • Page 16: Conventions

    The OfficeConnect ISDN LAN Modem is Year 2000 compliant. Specifically, its Year 2000 Compliance system clock is capable of accepting and storing dates including and beyond the year 2000. For information on Year 2000 compliance and 3Com products, visit the 3Com Year 2000 Web page: http://www.3com.com/products/yr2000.html Notice Type...

  • Page 17: Introduction

    This chapter provides an overview of the OfficeConnect referred to throughout this document as the ISDN LAN Modem. These instructions apply to the international version of the product and cover both hardware variations, ISDN U (3C892) and S/T (3C891). The ISDN LAN Modem is an easy to install, LAN to WAN modem. For the LAN, it Introduction provides four 10BASE-T Ethernet connections—...

  • Page 18: Local Networking With Access To A Remote Office

    1: I HAPTER NTRODUCTION Users can share access to a remote office LAN while continuing to network locally. Local Networking with Access to a Remote Office Figure 2 Local Networking with Access to a Remote Office Users can share access to a remote office and the Internet while continuing to Local Networking with network locally.

  • Page 19: Features

    Features Ease of Installation and Use High Performance Connectivity Routing Web-based, point-and-click user interface for configuration and online help. Automatic configuration verification with Internet connection through your Internet Service Provider (ISP). Firmware updates, user guides and technical notes available on the Web. Hi/fn™...
  • Page 20 ISDN Standards and Interface Basic Rate ISDNinterface compatibility with ETSI, BTNR 191, VN3 and NTT switches. Security PAP, CHAP and MS_CHAP support on both single-channel and Multilink PPP calls. Upgradability Flash memory for field firmware updates. Firmware posted on 3Com’s Web sites.
  • Page 21 Support for applications that use the User Datagram Protocol (UDP) and the Transmission Control Protocol (TCP). The UDP protocol is used primarily by Internet games. Look for the latest list of Internet applications and games that interoperate with the ISDN LAN Modem at http://www.remoteaccess.3com.com/support/docs/lanmodem Features...
  • Page 22 1: I HAPTER NTRODUCTION...

  • Page 23: Isdn Lan Modem Functionality Description

    ISDN LAN M This chapter provides a description of the key functionality of the ISDN LAN Modem. It includes the following topics: For a basic understanding of ISDN and networking, refer to Appendix A. The ISDN LAN Modem provides WAN side and LAN side connections. Connection Types The ISDN LAN Modem allows users to connect to a WAN using either of the WAN Side Connection...

  • Page 24: Two Separate Connections To Different Locations

    2: ISDN LAN M HAPTER ODEM Figure 4 ISDN LAN Modem LAN Connection with 10 Workstations An example of a single connection is shown in Figure 5. Figure 5 ISDN LAN Modem Single Workstation Connection Example An ISDN BRI line has two B channels for transmitting data or voice. Because each Two Separate B channel is independent, you can connect to two different locations.

  • Page 25: One High Speed Connection To A Single Location

    Peter's PC Jan's PC Figure 6 Two Simultaneous Remote Connections to Different Locations Alternatively, the B channels can be combined using Multilink PPP to form one One High Speed high-speed connection to a single location. Figure 7 shows a single high-speed Connection to a Single connection to a remote office LAN.

  • Page 26: Lan Side Connection

    2: ISDN LAN M HAPTER ODEM UNCTIONALITY Murray's PC Lou's PC Figure 8 Shared Connection to the Same Location LAN Side Connection Application Sharing over the LAN Most operating systems such as Windows 98 and 95 and Macintosh provide the capability for users on the LAN to share applications, files and printers among computers.

  • Page 27: Call Routing Protocol And Ip Address Translation

    This section describes the call routing protocol used by the ISDN LAN Modem and Call Routing Protocol explains how IP addresses are translated. and IP Address Translation To illustrate how the ISDN LAN Modem routes outgoing data calls, let us assume Placing a Call to a that you have set up the following types of service providers.

  • Page 28: Call Routing While One Call Is Already Connected

    2: ISDN LAN M HAPTER ODEM Figure 9 IP Address Translation Call Routing While One Call Is Already Connected If the ISDN LAN Modem has established a call to a remote destination, for instance, to an ISP, and the ISDN LAN Modem receives more packets, then the ISDN LAN Modem looks at the Network ID of the packets for proper routing.

  • Page 29: Multilink Ppp Configuration Options

    and agrees to use BAP, then the Bandwidth Allocation Protocol (BAP) negotiates the addition and removal of the second B channel with the peer equipment based on a user-defined threshold. A key advantage of BACP/BAP is that it provides a higher probability of establishing a Multilink PPP call during high traffic conditions by providing a specific telephone number for the second B channel to call.

  • Page 30: Setting Up The Server Side Of The Tunnel

    2: ISDN LAN M HAPTER ODEM UNCTIONALITY One of the protocols which enables a VPN to be created is PPTP. The PPTP protocol allows for multiple workstations to establish a secure multi-protocol connection to a remote, private network via a single, locally-dialed ISP account as shown in Figure 10.

  • Page 31: For Windows Dial-Up Networking Users

    IP address in the Phone number field. Once the Phone book entry is complete, you can double-click the icon to dial into a server that supports PPTP via any ISP. http://www.remoteaccess.3com.com/support/docs/lanmodem . and then enter PPTP in the search field. Understanding VPNs and PPTP...
  • Page 32 2: ISDN LAN M HAPTER ODEM UNCTIONALITY ESCRIPTION...

  • Page 33: Hardware Description And Installation

    Correct ISDN service installed at your location with an available RJ-45 outlet. A JavaScript-enabled and frames-capable Web browser. A Web browser is provided on the 3Com Companion Programs CD-ROM. You may want to use the browser provided because it is customized to the ISDN LAN Modem, making it easier to use.

  • Page 34: Ibm Pc Or Compatible Requirements

    3: H HAPTER ARDWARE ESCRIPTION AND Your IBM-compatible PC must have the following: IBM PC or Compatible Requirements Your Apple Macintosh computer must have the following: Apple Macintosh Requirements Built-in Ethernet connectivity is provided through an Apple Ethernet port in the Macintosh Centris 650, most Macintosh Quadra computers, and all Power Macintosh computers.

  • Page 35: Back Panel Connector Description

    Table 4 Front Panel LED Indicator Definitions ISDN B1/B2 Coll Ports1—4 The back panel provides the following components. Back Panel Connector Description 10-18 VDC 0.8 A MAX Figure 12 ISDN LAN Modem Back Panel From left to right the back panel consists of the following. Power: Connect the power module cable to this port.

  • Page 36: Installing The Isdn Lan Modem

    3: H HAPTER ARDWARE ESCRIPTION AND This section describes how to do the following. Installing the ISDN LAN Modem Before you begin, you will need the following in addition to the ISDN LAN Modem Before You Begin which was provided in the package: To install the ISDN cable: Installing the ISDN Cable 1 Connect the RJ-45 (8-pin) connector end of the ISDN cable to the port labeled...

  • Page 37: Connecting To A 10Base-T Ethernet Port

    To connect a computer to the ISDN LAN Modem, do the following. Connecting to a 10BASE-T Ethernet Port 1 Insert one end of the 10BASE-T Ethernet cable into one of the four LAN ports on the back of the ISDN LAN Modem, as shown in Figure 14. Figure 14 10BASE-T Ethernet LAN Connection 2 Insert the opposite end of the cable into your computer’s 10BASE-T Ethernet port.

  • Page 38: Connecting To Another Ethernet Hub

    3: H HAPTER ARDWARE ESCRIPTION AND You can connect to another Ethernet hub to allow up to 25 users to access the Connecting to Another WAN. Instructions for adding another Ethernet hub to allow 10 users, a more Ethernet Hub common scenario, is as follows.

  • Page 39: Installing Analog Equipment

    You can connect an analog touch-tone telephone, answering machine, fax Installing Analog machine, or external analog modem to the ISDN LAN Modem. You will need an Equipment RJ-11 to RJ-11 cable that is supplied with the analog device for each analog phone port connection.

  • Page 40: Installing The Power Cable

    3: H HAPTER ARDWARE ESCRIPTION AND To install the power cable: Installing the Power Cable 1 Connect the ISDN LAN Modem power module cable to the 10-18 VDC power connector on the back panel of the ISDN LAN Modem, as shown in Figure 17. Figure 17 Power Cable Connection 2 Plug the other end of the power module into a surge-protected standard wall outlet.

  • Page 41: Using Rubber Feet And Stacking Clips

    Using Rubber Feet and Stacking Clips Attach the feet to the marked areas at each corner of the underside of your ISDN LAN Modem to stabilize your ISDN LAN Modem and prevent sliding. Use the four clips to stack OfficeConnect units together. You can stack up to four units.
  • Page 42 3: H HAPTER ARDWARE ESCRIPTION AND NSTALLATION...

  • Page 43: Setting U Ptcp/Ip For Windows And Macintosh

    This chapter describes how to set up the Windows and Macintosh operating system (OS) TCP/IP stack. Your computer must have a TCP/IP stack in order to use the ISDN LAN Modem. If you already have TCP/IP installed and set up on your computer, then go on to Chapter 5.
  • Page 44 4: S TCP/IP HAPTER ETTING Figure 20 Select Network Component Type Dialog Box 3 Select Protocol and then click Add. The Select Network Protocol dialog box appears. Figure 21 Select Network Protocol Dialog Box 4 From the Manufacturers list box, select Microsoft, and then from the Network Protocols list box, select TCP/IP.
  • Page 45 Figure 22 Network Dialog Box 8 From the TCP/IP Properties dialog box, select the IP Address tab. Figure 23 TCP/IP Properties Dialog Box 9 Most users need to select Obtain an IP address automatically because most LANs use dynamic IP addresses. If your LAN uses static IP addresses, enter the IP address and subnet mask.

  • Page 46: Tcp/Ip Setup Using Windows Nt

    4: S TCP/IP HAPTER ETTING Figure 24 Advanced Parameters of TCP/IP Properties 11 Click OK to close the TCP/IP Properties dialog box. 12 Click OK to close the Network dialog box. 13 Restart Windows 98 or 95 to let these changes take effect. Windows NT 4.0 provides TCP/IP as part of its standard operating system.
  • Page 47 Figure 25 Windows NT Protocols Configuration Window 3 Click Add. The Select Network Protocol dialog box appears as shown in Figure 26. Figure 26 Select Network Protocol Dialog Box 4 Select TCP/IP Protocol and then click OK. The following message appears. Figure 27 DHCP Message Box 5 Select the appropriate response for your network.
  • Page 48 4: S TCP/IP HAPTER ETTING Figure 28 Network Protocols Group Box 8 Click Close. The Microsoft TCP/IP Properties window appears, as shown in Figure 29. Figure 29 Microsoft TCP/IP Properties Window 9 From the Adapter drop down list box, select the Ethernet card that is connected to the ISDN LAN Modem.

  • Page 49: Tcp/Ip Setup Using Mac Os 7.6 Or Later

    If you are using Macintosh operating system version 7.6 or later, Open Transport TCP/IP Setup Using (OT) PPP is provided and installed by default. If you did not install OT PPP when Mac OS 7.6 or later you installed your system software, perform a custom installation of your system software and install OT PPP version 1.1 or later.

  • Page 50: Tcp/Ip Setup Using Windows 3.11

    To set up MS_TCP, do the following. Setting Up TCP/IP Using MS TCP 1 Install MS_TCP, located on the 3Com Companion Programs CD-ROM, onto your hard drive. 2 From the Program Manager, click Network. Figure 31 Program Manager Group Box 3 From the Network group box, click Network Setup.
  • Page 51 Figure 33 Network Setup Dialog Box 9 After the installation is complete, click Close. 10 Click OK. 11 From the MS TCP/IP Configuration dialog box, check the Enable Automatic DHCP Configuration check box and then click OK. 12 Restart your PC to allow the changes to take effect. TCP/IP Setup Using Windows 3.11...
  • Page 52 4: S TCP/IP HAPTER ETTING INDOWS AND ACINTOSH...

  • Page 53: Isdn Lan M

    This chapter describes how to configure the ISDN LAN Modem for the typical configuration. The typical configuration covers the basic setup and includes what most users need to get up and running. It provides instructions for setting up your ISDN line and connecting to the Internet. If you followed the instructions in the Getting Started Guide, you have already set up the typical configuration.

  • Page 54: You Should Have This Information

    5: C ISDN LAN M HAPTER ONFIGURING THE CAUTION: You should only have one computer physically connected to the ISDN LAN Modem during configuration. Once you complete the configuration process, connect any other computers you would like to have on the LAN and then power cycle each computer.

  • Page 55: Setting Up Your Computer If You Have A Static Ip Address

    If your computer has a static IP address, you must verify and possibly change some Setting Up Your settings on your computer before you begin the configuration procedure. The Computer If You Have a ISDN LAN Modem must be your gateway and one of your DNS servers. Follow the Static IP Address procedure in the appropriate section to make sure that this is the case.

  • Page 56: For Macintosh Users

    You may want to rename this configuration so that your previous configuration is not overwritten. For Windows 3.11 Users 1 Insert the 3Com Companion Programs CD-ROM into your PC. 2 Start the CD and then double click MS_TCP/IP. Follow the instructions. If there are multiple options to choose from, leave the default value.

  • Page 57: Configuring The Isdn Lan Modem For The Typical Configuration

    To configure the ISDN LAN Modem for the typical configuration, do the following. Configuring the ISDN If you are using static IP addressing, you may need the IP address which you LAN Modem for the recorded previously in the Typical Configuration Address”section.
  • Page 58 5: C ISDN LAN M HAPTER ONFIGURING THE Figure 36 Set Password Window 3 Enter a password in the Password field and then enter the same password in the Password (repeat) field to confirm it. If you do not wish to enter a password, leave the fields empty. 4 Click Submit.
  • Page 59 There are two choices for the UK, ISDN2 and ISDN2e. Select the one which reflects the ISDN version you are using. ISDN2e is the latest version and therefore the recommended selection. However, you should check with your telephone company to determine the appropriate version to select. 6 Click Submit.
  • Page 60 5: C ISDN LAN M HAPTER ONFIGURING THE Figure 39 ISP Wizard Window If you do not want to use the ISP Wizard, click Abort. The ISDN LAN Modem configuration main page appears. Refer to Providers”for instructions on configuring your ISP connection manually. 10 In the Name field, enter the name of your ISP.

  • Page 61: Configuring A Static Ip Address On The Isdn Lan Modem

    7 Click the ISP Wizard button. You will see the information you entered previously. 8 Click Continue. “Editing Service Provider http://www.remoteaccess.3com.com/support/docs/lanmodem “Configuring the ISDN LAN Modem for the Typical and were not able to connect to a Web site and your computer Before You Begin Profiles.”...

  • Page 62: Isdn Lan Modem Main Page

    There are links from the illustration as well as links from the buttons listed in the left vertical frame. ODEM “Editing Service Provider http://www.remoteaccess.3com.com/support/docs/lanmodem Profiles” on...

  • Page 63: Links From The Illustration

    By clicking on the icons in the illustration, you can jump to the following locations. Links from the Illustration Service Providers: Jumps to the Service Providers page where you can configure a connection to an ISP or a private network. Workstations: Jumps to the Workstation Selection page where you can view a workstation’s IP address and can change its associations with service providers.
  • Page 64 5: C ISDN LAN M HAPTER ONFIGURING THE ODEM...

  • Page 65: Advanced Configuration

    Setting up additional service providers Editing service provider profiles Associating service providers with workstations Configuring LAN parameters Changing data call parameters Changing call routing Changing country selection Reserving DHCP addresses Changing your password Configuring ISDN line parameters Locking the configuration http://3Com.OC.LANmodem/mainpage...

  • Page 66: Setting Up Additional Service Providers

    6: A HAPTER DVANCED ONFIGURATION Setting Up Additional A service provider is a location outside of your LAN that you would like to access from your LAN, such as an ISP for access to the Internet or a private network such Service Providers as a remote office LAN.

  • Page 67: When To Select Private Network

    When to Select Private Network Select private network when you want to connect directly to a remote, private LAN such as a corporate network, shown in Figure 42. For instance, if you want to dial into your main office from home in order to access the servers at your office for e-mail, printing, and so on, then select private network as the type of service provider you want to configure.
  • Page 68 6: A HAPTER DVANCED ONFIGURATION Figure 43 ISP Service Provider Selection Window 3 Click Select. The Internet Service Provider Parameters window appears. Figure 44 ISP Parameters Window 4 In the Name field, enter a name for this remote destination, such as the name of the ISP.
  • Page 69 5 In the Telephone Number 1 field, enter the telephone number you must dial in order to reach your ISP. If the telephone number contains a subaddress, enter the telephone number, followed by an asterisk (*) and then the subaddress number. For example, type 020 555 1212 *3.

  • Page 70: Setting Up A Connection To A Private Network

    6: A HAPTER DVANCED ONFIGURATION If you select No, you will have to manually launch a call to this service provider every time you want to connect. You may want to set this field to No if your calls are being connected unintentionally as a result of packets generated by your workstations.
  • Page 71 Setting Up Additional Service Providers Figure 45 Private Network Service Provider Selection Window 2 Select New Private Network from the drop-down list box and then click Select. The Private Network Parameters window appears. Figure 46 Private Network Parameters Window...
  • Page 72 6: A HAPTER DVANCED ONFIGURATION 3 In the Name field, enter a name for this remote destination, such as the name of the location of the office. You may want to add an additional description if you have more than one account with this private network. 4 In the Telephone Number 1 field, enter the telephone number you must dial in order to reach this remote office.

  • Page 73: Associating Service Providers With Workstations On The Lan

    13 Under Miscellaneous, leave the default, NAT enabled, unless you are certain you want to disable it. With NAT enabled, the ISDN LAN Modem translates IP addresses between the computers on the LAN and the ISP, allowing all LAN users access to a single ISP.

  • Page 74: Editing Service Provider Profiles

    6: A HAPTER DVANCED ONFIGURATION If you have more than one ISP configured, all calls will be routed to the first ISP listed. To connect to another ISP that you have configured, uncheck the box(es) of the ISP(s) that you do not wish to use at this time. To change the association between service provider connections and a particular computer on the LAN, do the following.

  • Page 75: Restricting Workstations From Accessing Service Provider(S)

    If you want to restrict a workstation(s) on the LAN from accessing a service Restricting providers(s), do the following. Workstations from Accessing Service Provider(s) 1 click Workstation Parameters from the ISDN LAN Modem home page. 2 Select the workstation from which you want to limit access. 3 Clear the check boxes located next to the names of the service provider(s) you want to restrict from accessing that service provider over the LAN.

  • Page 76: Ip Address And Subnet Mask

    6: A HAPTER DVANCED ONFIGURATION IP Address and Subnet Mask The IP address is a unique address which identifies the ISDN LAN Modem on a network. The default address (192.168.1.1) is a private IP address which will be translated automatically by the ISDN LAN Modem for Internet access. You should leave the default unless you are certain that this value must be changed.

  • Page 77: Configuring The Lan Parameters

    To configure LAN parameters, do the following. Configuring the LAN Parameters 1 From the ISDN LAN Modem main page, click the ISDN LAN Modem graphic. 2 In the IP Address field, review the default and enter a different IP address if required.

  • Page 78: Minimum Call Duration

    6: A HAPTER DVANCED ONFIGURATION Figure 48 Data Call Parameters Window Minimum Call Duration The minimum call duration is the minimum length of a call that is measured and must be satisfied before a call is disconnected. The default for the minimum call duration is 2 minutes.

  • Page 79: Connect/Disconnect Threshold For The Second B Channel

    Connect/Disconnect Threshold for the Second B Channel If you specified that you want to use the second B channel only when needed, indicate the percentage of bandwidth utilization on the first B channel which must be reached before the second B channel is allocated, or below which the first B channel must fall before the second B channel is removed.

  • Page 80: Changing Call Routing

    6: A HAPTER DVANCED ONFIGURATION Changing Call Routing This section describes the default setting for routing voice and data calls and provides instructions for changing the way voice and data calls are routed. By default, incoming voice calls to telephone number 1 are routed to phone port Default Setting 1, incoming voice calls to telephone number 2 are routed to phone port 2.

  • Page 81: Changing Country Selection

    If you would also like to use this telephone number for data calls, check the data box. 5 Click Submit. If you want to password protect the configuration profile of the ISDN LAN modem, refer to “Locking and Unlocking the Configuration”. You may find that you need to change the country you selected when you initially Changing Country set up the ISDN LAN modem.

  • Page 82: Reserving Dhcp Addresses

    6: A HAPTER DVANCED ONFIGURATION Reserving DHCP If you have workstations on your LAN with static IP addresses and other workstations on the same LAN with dynamic IP addresses, it is recommended that Addresses you reserve the static IP addresses in the DHCP server to ensure that they are not dynamically assigned to another workstation.

  • Page 83: Configuring Isdn Line Parameters

    minutes. After 5 minutes of inactivity, you are locked out of the Web Wizard configuration program. The password must be entered to gain access. If you forget your password, you can reset the ISDN LAN Modem to the factory default which allows you to enter a new password. Note that when the ISDN LAN Modem is restored to the factory default settings, you will lose your configuration which includes all service provider profiles and ISDN parameters.

  • Page 84: Locking And Unlocking The Configuration

    6: A HAPTER DVANCED ONFIGURATION Figure 50 ISDN Parameters Window 2 In the Telephone Number 1 field, enter the first telephone number associated with your ISDN line. If any of the telephone numbers that you enter contains a subaddress, enter the telephone number, followed by an asterisk (*) and then the subaddress number.

  • Page 85: Configuring The Isdn Lan Modem From A Remote Location

    You may need to scroll down to see the Lock Configuration section. A message indicates that the configuration is locked. To unlock the configuration, do the following. 1 Click Continue. The Enter Password window appears. 2 Enter your password to access the ISDN LAN Modem configuration program. 3 Click Submit.
  • Page 86 6: A HAPTER DVANCED ONFIGURATION 15 Click OK to close the Server Types window. 16 Click OK to close your connection window. 17 Double-click your new connection icon created via Dial-Up Networking. The Connect To window will open. You may choose to leave the Username and Password fields blank at this time.

  • Page 87: Call

    The ISDN LAN Modem supports the following supplementary voice services. Supplementary Voice Services In order to use these services, they must also be supported on your ISDN line. Call Before You Begin your telephone company if you want to have these services added. Call Waiting allows you to place an active call on hold in order to answer an Call Waiting and Call incoming call.

  • Page 88: Disconnecting A Call On Hold

    7: S HAPTER UPPLEMENTARY OICE ERVICES To toggle back and forth between the two calls, simply press and release the switch hook button. 3 To end an initial call when you hear the Call Waiting tone (instead of putting the call on hold) hang up the phone and wait for it to ring.

  • Page 89: Calling Line Identification Restriction

    You can restrict presentation of your telephone number(s) on Caller ID devices, Calling Line either permanently or on a per-call basis. By default CLIR is disabled, meaning that Identification Restriction you are allowing your telephone number to be shown on a Caller ID display. If you enable CLIR, you prevent the display of your telephone number on a Caller ID unit.
  • Page 90 7: S HAPTER UPPLEMENTARY OICE ERVICES...

  • Page 91: Placing , Receiving And Disconnecting Calls

    This chapter covers the following main topics: You can place calls from your computer through the ISDN LAN Modem to a Placing Calls remote location either automatically by using one of the service provider connections you set up or manually by entering the telephone number of the destination.

  • Page 92: Placing A Call Manually To An Existing Service Provider

    8: P HAPTER LACING ECEIVING AND To place a call manually to a service provider that is already configured, do the Placing a Call Manually following. to an Existing Service Provider The existing service provider must be associated with your workstation in order for you to place a manual call to it.

  • Page 93: Participating In A Temporary Call

    A message indicates that the call is being placed. A B channel LED on the ISDN LAN Modem front panel illuminates green when a connection is established. Once connected, you are ready to run any desired application appropriate for that location, such as ftp to transfer files, or you may enter a different URL in your Web browser to access the Internet.

  • Page 94: Distinctive Ringing

    By default this feature is disabled. To enable, do the following. 1 Go to the ISDN LAN Modem’s main configuration page: http://3com.OC.LANmodem/mainpage 2 Click ISDN Parameters. 3 Locate Distinctive Ringing and then click the box labeled Enable.

  • Page 95: Disconnecting Calls Automatically Using Timers

    Disconnecting Data Calls There are a number of ways by which you can configure calls to be disconnected Disconnecting Calls automatically. You can set timers and disconnect thresholds from the Data Call Automatically Using Parameters window. Specifically, the parameters you can set are as follows. Timers Minimum Call Duration Enter the minimum length of a call that is measured before the ISDN LAN Modem...
  • Page 96 8: P HAPTER LACING ECEIVING AND ISCONNECTING ALLS...

  • Page 97: Troubleshooting And Maintenance

    This chapter explains how to isolate and solve problems encountered with the ISDN LAN Modem. Problems may stem from incorrect option settings or improper installation. This chapter covers the following main topics. CAUTION: There are no user-serviceable parts inside your ISDN LAN Modem. Unauthorized opening of the unit will void the warranty.

  • Page 98: Monitoring Leds

    9: T HAPTER ROUBLESHOOTING AND Monitoring LEDs If you are experiencing operational inconsistencies, monitor the ALERT, ISDN, B channel and LAN port status LEDs to isolate problems. Press and release the Reset button and observe the ALERT LED. During power-up Monitoring the ALERT self-test, the ALERT LED will remain lit.

  • Page 99: Troubleshooting Problems Indicated By Leds

    A previous firmware download Download the firmware. Refer to the Readme file was not completed successfully. located at http://www.remoteaccess.3com.com/support/do cs/lanmodem for firmware download instructions. Firmware download process was Do not remove power plug. Wait until the LEDs stop aborted.

  • Page 100: Evaluating Symptoms And Solutions

    If you are using Netscape, launch your Web browser. From the Options menu, select General Preferences. From Browser Starts With, select Home Page Location and then enter a URL such as http://www.3com.com. Your Web browser may be configured to use a proxy server, instead of the LAN Modem.
  • Page 101 Table 9 Symptoms, Causes, and Solutions Symptom Possible Cause ISDN LAN Modem has assigned all available IP addresses. Although multiple service You may not have configured the providers are configured, all IP address and the subnet mask calls are going to the same in the Private Network service provider which is a Parameters window.
  • Page 102 9: T HAPTER ROUBLESHOOTING AND Table 9 Symptoms, Causes, and Solutions Symptom Possible Cause Some application software Application may have an doesn’t work properly. embedded IP address which causes a problem when NAT is enabled on the ISDN LAN Modem. The user name and/or password for this service provider may not be entered properly.
  • Page 103 Table 9 Symptoms, Causes, and Solutions Symptom Possible Cause Cannot hear dial tone when Bandwidth Allocation may be set attempting to place a call using to Use two B Channels. an ISDN LAN Modem phone port. Cannot receive an incoming Bandwidth Allocation may be set call.

  • Page 104: Finding More Information

    For more information about the ISDN LAN Modem, such as frequently asked questions and specific technical notes go to the following URL: Information http://www.remoteaccess.3com.com/support/docs/lanmodem this site for quick and easy access. If you are using the ISDN LAN Modem custom browser, click Updates from the menu bar.

  • Page 105: Reviewing Statistics

    4 Reconnect the ISDN cable. 5 Restart your computer. 6 Launch your Web browser. The ISDN LAN Modem begins its initial setup sequence. Reviewing Statistics Various statistics about LAN and WAN parameters are stored and available for review. To view statistics, do the following. 1 From the ISDN LAN Modem’s home page, select Statistics.

  • Page 106: Understanding Isdn Information

    9: T HAPTER ROUBLESHOOTING AND The ISDN statistics provided are as follows. Understanding ISDN Information Layer 1 status: Indicates whether layer 1 of the ISDN line is up or down. Depending upon your location, layer 1 functions in one of two possible ways. In some locations, layer 1 will be down if no calls are connected.

  • Page 107: Understanding Last Call Information

    Table 13 Current Call Information Description Current Call Information Data call options Call start time The call has been up for (seconds) The connection has been idle for (seconds) Number of octets received Number of octets transmitted Calling telephone or port number Called telephone number...

  • Page 108: Understanding Service Provider Information

    9: T HAPTER ROUBLESHOOTING AND Last Call Information Data call options Call start time The call was up for (seconds) Number of octets received Number of octets transmitted Calling telephone or port number Called telephone number Reason for call going down Reason for call coming The following Service Provider information is provided after a call has ended.
  • Page 109 ETWORKING RIMER This chapter provides a description of basic networking concepts and terminology to help you better understand the key functionality of the ISDN LAN Modem. A network is a set of computers and other devices such as printers, modems, and What is a network? scanners that are connected together either directly via physical cables or indirectly via dial-up telephone services.
  • Page 110 A: N PPENDIX ETWORKING RIMER You can connect a LAN to a WAN through a number of devices such as a router or How does a LAN connect a bridge that can place a call to the remote LAN using a dial-up telephone service to a WAN? such as ISDN.
  • Page 111 Figure 54 Two Simultaneous Connections The B channels may also be combined using the Multilink PPP feature to allow one higher speed connection to a single location as shown in Figure 55. Figure 55 Using Multilink to Combine B Channels for a Single High-Speed Link Once the computers are physically connected in a network, they must run some How do different type of standard communications software that allows different types of...
  • Page 112 A: N PPENDIX ETWORKING RIMER An IP address is a 32 bit address used by TCP/IP to uniquely identify the location of What is an IP Address? a device on a network. Note that the IP address does not refer to the device itself. If, for example, you relocate a PC to another area of the same network, you may need a new IP address.
  • Page 113 What is a network? Dynamic Host Configuration Protocol automatically assigns a unique, temporary IP What is DHCP? address to a newly attached computer on an IP network. Domain Name Service translates the common alphabetic name into the numeric IP What is DNS? address.
  • Page 114 A: N PPENDIX ETWORKING RIMER...
  • Page 115 An Internet Explorer Web browser tailored for use with your ISDN LAN Modem is provided on the 3Com Companion Programs CD-ROM. You may prefer to use this browser as it has been customized for your ISDN LAN Modem, as shown in Figure 57, making it easier to use.
  • Page 116 B: U PPENDIX SING THE USTOM Under the Favorites menu, a subcategory labeled 3Com sites lists several helpful Using Favorites sites already bookmarked for you. These include: If you already have a version of the Internet Explorer Web browser installed and Installing the Custom you would like to install a later, customized version, you should first uninstall the...
  • Page 117 ISDN LAN M EFAULTS Table 16 LAN Parameters LAN Modem IP Address Subnet Mask DHCP Server Call Routing Calls to Telephone 1 Calls to Telephone 2 Data Calls CLIR Use Data Compression Use NAT Bandwidth on Demand Connect/Disconnect Threshold for 2nd B channel Connect Delay Disconnect Delay...
  • Page 118 C: ISDN LAN M PPENDIX ODEM ACTORY EFAULTS...

  • Page 119: Year 2000 Compliance

    The OfficeConnect ISDN LAN Modem is Year 2000 compliant. Specifically, its system clock is capable of accepting and storing dates including and beyond the year 2000. For information on Year 2000 compliance and 3Com products, visit the 3Com Year 2000 web page: http://www.3Com.com/products/yr2000.html ODEM ISDN LAN Modem Specifications...

  • Page 120: Ring Cadences

    D: ISDN LAN M PPENDIX ODEM The following table lists the ring cadences for voice calls. The ring cadence is set Ring Cadences based on the country you selected when you set up the ISDN LAN modem. Table 18 Country Australia Austria Belgium...

  • Page 121: Tone Definitions

    The following table lists the tone definitions for voice calls. Tone Definitions Table 19 Tone Busy tone Call waiting tone Configuration positive acknowledgment tone Configuration negative acknowledgment tone Call waiting and CLIR enabled confirmation tone Call Waiting and CLIR disabled confirmation tone ISDN Line Disconnected Tone * Generated when the ISDN LAN modem does not have an available B channel to place an outgoing...
  • Page 122 D: ISDN LAN M PPENDIX ODEM PECIFICATIONS...
  • Page 123 LOSSARY Bearer channel. In ISDN communications, a B channel transmits data or voice B channel traffic at a rate of up to 64 Kbps. Basic Rate Interface. A BRI line is one of two access methods to the ISDN; PRI is the other.
  • Page 124 LOSSARY Firmware is the code which resides in the ISDN Modem and controls its behavior. It Firmware differs from software in the form of programs that run on your computer. An IP address is a set of numbers that uniquely identifies each device in a network. IP address Integrated Services Digital Network.
  • Page 125 LOSSARY retransmission. Reliability is dependent upon the application. Note that because it does not perform checking, UDP is more efficient than TCP. UDP is commonly used for Internet games. A virtual private network is a secure, private data network that is established over the Internet resulting in significant cost savings from using local, toll free access numbers.
  • Page 126 LOSSARY...
  • Page 127 NDEX analog equipment installation 33 B channel LEDs 92, 93 BACP 22, 117 bandwidth on demand parameters 89 BAP 22, 117 call routing analog ports for PC using Windows 74 Challenge Handshake Authentication Protocol (CHAP) 14, 117 changing data call parameters 71 supplementary voice services 81 voice call routing 74 your password 76...
  • Page 128 NDEX...
  • Page 129 The repaired or replaced item will be shipped to Customer, at 3Com’s expense, not later than thirty (30) days after receipt of the defective product by 3Com.

  • Page 130: Agency Approvals

    Agency Approvals This product ostensibly complies with the electro-magnetic compatibility (EMC) requirements of EN 55022 Class A and EN 50082 (susceptibility). However, to ensure compliance with Class B of EN55022, the following prerequisites should be observed: The 4 LAN ports must have a CAT5 cable or better attached. Unscreened ISDN cable. The phone ports 1 and 2 must be used in conjunction with a 3 turn ferrite.

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