® OfficeConnect® ISDN LAN Modem 3C892 User Guide http://www.3com.com/ Part No.
3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 3Com Corporation, 1999. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Corporation.
TABLE OF CONTENTS ABOUT THIS GUIDE How to Use This Guide Conventions 10 Year 2000 Compliance 1 9 10 INTRODUCTION Introduction 11 Applications 11 Local Networking with Access to the Internet 11 Local Networking with Access to a Remote Office 12 Local Networking with Access to the Internet and a Remote Office Features 13 Ease of Installation and Use 13 High Performance 13 Connectivity 13 Routing 13 Bandwidth Management 14 Remote Management 14 Voice Features 14 Protocols 14 ISDN Standards and Interface 15
Placing a Call to a Previously Defined Destination 20 Call Routing While No Other Calls Are Connected 20 Call Routing While One Call Is Already Connected 21 Understanding Multilink PPP and BACP/BAP 21 What is Multilink PPP? 21 What is BACP/BAP? 21 Multilink PPP Configuration Options 22 Understanding Dynamic Bandwidth Allocation 22 Understanding VPNs and PPTP 23 23 Setting Up the Server Side of the Tunnel 23 Setting Up the Client Side of the Tunnel 23 For Windows Dial-Up Networking Users 24 Establishing a Tu
For Windows 98 and 95 Users 45 For Windows NT 4.0 Users 45 For Macintosh Users 46 For Windows 3.
Setting Up Your ISDN Line Manually 72 Locking and Unlocking the Configuration 73 73 74 Configuring the ISDN LAN Modem from a Remote Location 74 Configuring the ISDN LAN Modem Remotely via Another LAN Modem Configuring the ISDN LAN Modem Remotely via an ISDN Modem 74 75 7 SUPPLEMENTARY VOICE CALL SERVICES Supplementary Voice Services 77 Before You Begin 77 Call Waiting 78 How to Configure Call Waiting 78 How to Use Call Waiting 79 Caller ID 80 Caller ID 80 Caller ID Date and Time 80 Caller ID Blocking 80 F
Connect/Disconnect threshold for the second B channel 89 89 9 89 TROUBLESHOOTING AND MAINTENANCE Checking the Basics 91 Monitoring LEDs 92 Monitoring the ALERT LED 92 Monitoring the ISDN LED 92 Monitoring the B Channel LEDs 92 Monitoring the LAN Port Status LEDs 92 Troubleshooting Problems Indicated by LEDs 93 Evaluating Symptoms and Solutions 94 Finding More Information 100 Contacting Technical Support 100 Downloading Firmware to Your ISDN LAN Modem 100 Resetting the ISDN LAN Modem 100 Resetting the ISD
Installing Future Releases of Internet Explorer C ISDN LAN MODEM FACTORY DEFAULTS D ISDN LAN MODEM SPECIFICATIONS Year 2000 Compliance E 112 116 ORDERING ISDN SERVICE If You Place Your ISDN Order Through 3Com 117 If You Place Your ISDN Order Through the Telephone Company 117 Placing Your Order 118 Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A 119 119 Limitations of ISDN Ordering Codes U, EZ-ISDN 1, V and EZ-ISDN 1A 119 Simultaneous Voice and Data on the Same Telephone Num
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. Audience Description How to Use This Guide This guide is intended for end users with no presumed level of expertise. Table 1 shows where to find specific information in this guide.
ABOUT THIS GUIDE Conventions Table 2 and Table 3 list conventions that are used throughout this guide.
1 INTRODUCTION This chapter provides an overview of the OfficeConnect® ISDN LAN Modem, referred to throughout this document as the ISDN LAN Modem. Introduction The ISDN LAN Modem is an easy to install, LAN to WAN modem. For the LAN, it provides four 10BASE-T Ethernet connections— expandable to 25 connections. Refer to Figure 1 for an example showing 10 connections by adding an 8-port 10BASE-T Ethernet hub. For WAN access, it provides a Basic Rate Interface (BRI) ISDN port.
CHAPTER 1: INTRODUCTION Local Networking with Access to a Remote Office Users can share access to a remote office LAN while continuing to network locally.
Features Features 13 Ease of Installation and Use ■ SPID Wizard automatic configuration for telephone company switch and service profile ID (SPID) numbers. ■ 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.
CHAPTER 1: INTRODUCTION Bandwidth Management ■ Automatic call connection (also known as dial-on-demand routing). ■ Automatic disconnection of idle calls after a specified length of time. ■ Bandwidth on Demand using Bandwidth Allocation Control Protocol (BACP)/Bandwidth Allocation Protocol (BAP) based on a specified threshold. ■ Dynamic bandwidth allocation (DBA), which allows you to place or receive a voice or data call while a Multilink PPP call is active.
Features 15 ISDN Standards and Interface ■ Basic Rate ISDN U interface with built-in NT1. ■ Full ISDN signaling support of National ISDN. ■ Compatibility with Lucent, Northern Telecom and Siemens 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 site. Diagnostics ■ LED status display. ■ Statistics display.
CHAPTER 1: INTRODUCTION
2 ISDN LAN MODEM FUNCTIONALITY DESCRIPTION This chapter provides a description of the key functionality of the ISDN LAN Modem. It includes the following topics: ■ Connection Types ■ Call Routing Protocol and IP Address Translation ■ Understanding Multilink PPP and Bandwidth on Demand ■ Understanding Dynamic Bandwidth Allocation ■ Understanding PPTP For a basic understanding of ISDN and networking, refer to Appendix A.
CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION OfficeConnect® ISDN LAN Modem LAN STATUS Alert PWR ISDN B1 B2 Tx Coll 1 2 3 Com 3 4 Figure 5 ISDN LAN Modem Single Workstation Connection Example 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.
Connection Types One High Speed Connection to a Single Location 19 Alternatively, the B channels can be combined using Multilink PPP to form one high-speed connection to a single location. Figure 7 shows a single high-speed connection to a remote office LAN.
CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION Call Routing Protocol and IP Address Translation Placing a Call to a Previously Defined Destination This section describes the call routing protocol used by the ISDN LAN Modem and explains how IP addresses are translated. To illustrate how the ISDN LAN Modem routes outgoing data calls, let us assume that you have set up the following types of service providers.
Understanding Multilink PPP and BACP/BAP Internet/Intranet or online service 19 Rob's PC 192.168.1.2 2. 16 Translates PC IP addresses to IP address assigned by ISP 8. 1. 2 IP address assigned by ISP 198.6.1.1 LAN STATUS Laura's PC 192.168.1.3 Alert PWR ISDN B1 B2 Tx Coll 1 2 3 4 3 Com 1 .1. 1.1 1 8.6 .6. .1. 19 198 8.6 9 1 ISDN BRI line Public telephone network OfficeConnect® ISDN LAN Modem 192.168.1.1 ISDN BRI line 19 Buddy's PC 192.168.1.4 2.1 68 .1. 5 1 .4 .1 68 .
CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION 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.
Understanding VPNs and PPTP Understanding VPNs and PPTP 23 Virtual private networks (VPN) are private, secure networks created in public networks such as the Internet. A VPN is essentially a secure, private tunnel within the Internet. Since VPN calls are placed through a local ISP, they eliminate long distance charges that would occur from directly dialing to a remote private network. Edge the the of From to Network. the Heart One of the protocols which enables a VPN to be created is PPTP.
CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION For Windows Dial-Up Networking Users If you are using Windows Dial-Up Networking version 1.2 or higher, the basic set up steps are as follows. (Refer to Windows user documentation for details.) ■ Install the PPTP protocol ■ Create a RAS phone book entry for the VPN A RAS phone book entry is similar to other phone book entries except there is an IP address in the Phone number field.
3 Package Contents Before You Install the ISDN LAN Modem HARDWARE DESCRIPTION AND INSTALLATION The ISDN LAN Modem package includes: ■ OfficeConnect ISDN LAN Modem ■ Power cable with an AC wall transformer ■ RJ -11 ISDN telephone cable ■ 10BASE-T Ethernet cable ■ 3Com Companion Programs CD-ROM ■ OfficeConnect ISDN LAN Modem Getting Started Guide ■ Rubber feet and stacking clips To install, configure and use the ISDN LAN Modem successfully, you must have the following: ■ Correct ISDN service
CHAPTER 3: HARDWARE DESCRIPTION AND INSTALLATION Front Panel LED Description The front panel provides the following LEDs. LAN STATUS Alert POWER ISDN OK B1 B2 TX COLL 1 2 3 Com 3 4 ISDN LAN Modem 3C892 Figure 11 ISDN LAN Modem Front Panel The functions of the front panel LEDs are described in Table 4. These front panel LEDs show whether or not the unit is functioning properly and indicate the status of the activity over the 10BASE-T and ISDN ports.
Installing the ISDN LAN Modem Back Panel Connector Description 27 The back panel provides the following components. 10-18 VDC 0.8 A MAX Power Connector RESET Reset Button 1 PHONE 2 4 Two Analog Telephone Ports 3 LAN 2 Four Ethernet 10Base-T Connectors 1 ISDN ISDN BRI Interface Figure 12 ISDN LAN Modem Back Panel From left to right the back panel consists of the following. Installing the ISDN LAN Modem Before You Begin ■ Power: Connect the power module cable to this port.
CHAPTER 3: HARDWARE DESCRIPTION AND INSTALLATION Installing the ISDN Cable To install the ISDN cable: 1 Connect the RJ-45 (8-pin) connector end of the ISDN cable to the port labeled ISDN on the back panel, as shown in Figure 13. N ISD E ON T 1 PH 2 SE RE DC 8V 10-1 AX AM 0.8 Figure 13 ISDN Cable Connection 2 Connect the RJ-11 (6-pin) connector end of the RJ-45/RJ-11 ISDN cable to the RJ-11 or RJ-45 ISDN wall jack.
Installing the ISDN LAN Modem 29 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. If the newly-added computers cannot communicate with the ISDN LAN Modem, refer to “Evaluating Symptoms and Solutions” in Chapter 9.
CHAPTER 3: HARDWARE DESCRIPTION AND INSTALLATION Installing Analog Equipment You can connect an analog touch-tone telephone, answering machine, fax machine, or external analog modem to the ISDN LAN Modem. You will need an RJ-11 to RJ-11 cable that is supplied with the analog device for each analog phone port connection. To install an analog device: 1 Insert one end of an RJ-11 cable into one of the two analog ports labeled Phone on the back of the ISDN LAN Modem, as shown in Figure 16.
Wall Mounting the ISDN LAN Modem Installing the Power Cable 31 To install 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. N ISD E ON T 1 PH 2 SE RE DC 8V 10-1 AX AM 0.8 Figure 17 Power Cable Connection 2 Plug the other end of the power module into a surge-protected standard 110 VAC wall outlet.
CHAPTER 3: HARDWARE DESCRIPTION AND INSTALLATION WARNING: Only wall mount single units. Do not wall mount stacked OfficeConnect units. 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. Stack small units above large units. 1. Place your existing unit on a flat surface.
4 SETTING UP TCP/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. These instructions vary depending upon which operating system you are using. Refer to the appropriate section.
CHAPTER 4: SETTING U P TCP/IP FOR WINDOWS AND MACINTOSH 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. 5 Click OK. 6 Select the Configuration tab. The Network Configuration dialog box appears. 7 Select TCP/IP and then click Properties.
TCP/IP Setup Using Windows 98 and Windows 95 35 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. (You can obtain this information from your system administrator or ISP.
CHAPTER 4: SETTING U P TCP/IP FOR WINDOWS AND MACINTOSH 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. TCP/IP Setup Using Windows NT 4.0 Windows NT 4.0 provides TCP/IP as part of its standard operating system. If you have not already set up TCP/IP, do the following. You will need your Windows NT 4.0 installation CD-ROM.
TCP/IP Setup Using Windows NT 4.0 37 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. 6 You are then prompted to insert your installation CD-ROM. Insert the Windows NT 4.0 CD ROM and then click Continue.
CHAPTER 4: SETTING U P TCP/IP FOR WINDOWS AND MACINTOSH 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. 10 If this LAN uses dynamic IP addresses, select Obtain an IP address from a DHCP server. If this LAN uses static IP addresses, enter the IP address and subnet mask.
TCP/IP Setup Using Mac OS 7.6 or later TCP/IP Setup Using Mac OS 7.6 or later 39 If you are using Macintosh operating system version 7.6 or later, Open Transport (OT) PPP is provided and installed by default. If you did not install OT PPP when you installed your system software, perform a custom installation of your system software and install OT PPP version 1.1 or later. To set up TCP/IP for Mac, do the following. 1 From the Apple menu, select Control Panels and then select TCP/IP.
CHAPTER 4: SETTING U P TCP/IP FOR WINDOWS AND MACINTOSH TCP/IP Setup Using Windows 3.11 Setting Up TCP/IP Using MS TCP If you are using Windows 3.11, a TCP/IP stack is not provided as part of the operating system. If you do not have a TCP/IP stack, you can use MS TCP which is provided on the 3Com Companion Programs CD-ROM. To set up MS_TCP, do the following. 1 Install MS_TCP, located on the 3Com Companion Programs CD-ROM, onto your hard drive. 2 From the Program Manager, click Network.
TCP/IP Setup Using Windows 3.11 41 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.
CHAPTER 4: SETTING U P TCP/IP FOR WINDOWS AND MACINTOSH
5 CONFIGURING THE ISDN LAN MODEM 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.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM 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. If the newly-added computers cannot communicate with the ISDN LAN Modem, refer to “Evaluating Symptoms and Solutions” in Chapter 9.
Before You Begin Setting Up Your Computer If You Have a Static IP Address 45 If your computer has a static IP address, you must verify and possibly change some settings on your computer before you begin the configuration procedure. The ISDN LAN Modem must be your gateway and one of your DNS servers. Follow the procedure in the appropriate section to make sure that this is the case.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM You are asked to restart your computer. 11 Click OK. For Macintosh Users 1 From the Apple menu, open Control Panels. Double-click TCP/IP. 2 Choose Ethernet from the Connect via drop-down list box, if not already chosen. The Configure drop down list box should be set to Manually if you are on a static network. 3 Note the series of numbers entered in the Router address box. Write this number down. 4 Enter this number into the Name server addr. box.
Configuring the ISDN LAN Modem for the Typical Configuration Configuring the ISDN LAN Modem for the Typical Configuration 47 To configure the ISDN LAN Modem for the typical configuration, do the following. If you are using static IP addressing, you may need the IP address which you recorded previously in the “Setting Up Your Computer If You Have a Static IP Address”section. 1 Launch your Web browser. The ISDN LAN Modem attempts to use its default IP address to communicate with the computer.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM 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. A message box indicates that your password has been set. The SPID Wizard window appears.
Configuring the ISDN LAN Modem for the Typical Configuration 49 If you have not ordered your ISDN line, click Abort and then Click Yes to confirm that you want to abort the SPID Wizard program. The ISDN LAN Modem configuration main page appears. After you have an ISDN line installed, refer to “Setting Up Your ISDN Line Manually” for instructions on configuring your ISDN connection manually. 5 Enter the first telephone number for your ISDN line.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM ■ ■ ■ Use one B channel: When selected, one B channel is used to connect to this service provider. Add second B channel as required: When selected, the second B channel is added when the first B channel reaches a certain threshold. The threshold default is 60%. To change the threshold default, refer to “Changing Data Call Parameters” in Chapter 6. The second B channel is temporarily removed when you place or answer another call.
Configuring the ISDN LAN Modem for the Typical Configuration Configuring a Static IP Address on the ISDN LAN Modem 51 If you followed the steps in “Configuring the ISDN LAN Modem for the Typical Configuration” and were not able to connect to a Web site and your computer has a static IP address, there may be an incompatibility between the IP address on your computer and the IP address on the ISDN LAN Modem. To correct this, do the following. 1 Enter the following URL in your Web browser: http://3com.oc.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM ISDN LAN Modem Main Page The ISDN LAN Modem main page is shown in Figure 39. From this page you can access configuration parameters as well as place and receive calls. Bookmark this page for easy access. Alternatively, if you are using the ISDN LAN Modem Web browser, click Configure Modem from the Links menu bar.
ISDN LAN Modem Main Page Links from the Buttons 53 ■ Home: Jumps to the main configuration page of the ISDN LAN Modem. ■ SPID Wizard: Activates the SPID Wizard if you need to run it again. ■ ISP Wizard: Allows you to configure an ISP. If you already configured an ISP using the ISP Wizard, and then you run ISP Wizard again, the latest ISP will overwrite the previous one. To add a second ISP, go to the Service Providers page.
CHAPTER 5: CONFIGURING THE ISDN LAN MODEM
6 ADVANCED CONFIGURATION This chapter describes how to configure advanced settings for the ISDN LAN Modem. For instance, setting up a connection to a private network such as a remote office LAN, and changing default settings. You should follow the typical configuration steps first so that you can have your ISDN line parameters set up before you configure the advanced parameters. Specifically, this section provides instructions for doing the following.
CHAPTER 6: ADVANCED CONFIGURATION Setting Up Additional Service Providers 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 as a remote office LAN. You can define up to four service providers (that is, remote destinations) on the ISDN LAN Modem.
Setting Up Additional Service Providers 57 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 41. 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.
CHAPTER 6: ADVANCED CONFIGURATION Figure 42 ISP Service Provider Selection Window 3 Click Select. The Internet Service Provider Parameters window appears. Figure 43 ISP Parameters Window 4 In the Name field, enter a name for this remote destination, such as the name of the ISP. You may want to add an additional description if you have more than one account with this particular ISP. 5 In the Telephone Number 1 field, enter the telephone number you must dial in order to reach your ISP.
Setting Up Additional Service Providers 59 6 In the Alternate Number field, you can either enter an alternative number or, if required by your ISP, a second telephone number to establish a Multilink PPP call. To enter a second, alternative telephone number for your ISP that will be automatically dialed (if, for example the first number is busy) select Alternate and then enter the telephone number in the Number field.
CHAPTER 6: ADVANCED CONFIGURATION are being connected unintentionally as a result of packets generated by your workstations. 15 For Enable Intelligent NAT, leave the default setting, which is Yes, in order for the LAN Modem to better support Internet applications and games. The ISDN LAN Modem delivers all unsolicited TCP/UDP packets to the workstation that is currently communicating with the remote host that has generated these packets.
Setting Up Additional Service Providers 61 Figure 44 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.
CHAPTER 6: ADVANCED CONFIGURATION 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.
Setting Up Additional Service Providers 63 12 Under Miscellaneous, indicate whether or not you would like to use data compression when transferring data by selecting the appropriate radio button. 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.
CHAPTER 6: ADVANCED CONFIGURATION ■ IP Address: This field contains the IP address of the workstation you selected. You should not have to make any changes to this field unless you are using static IP addresses (that is, IP addresses which are not dynamically assigned by the ISDN LAN Modem). ■ Service Provider Usage: Under Enable the use of the following Service Providers, you can see which service providers can be accessed from this workstation.
Restricting Workstations from Accessing Service Provider(s) Restricting Workstations from Accessing Service Provider(s) 65 If you want to restrict a workstation(s) on the LAN from accessing a service providers(s), do the following. 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.
CHAPTER 6: ADVANCED CONFIGURATION 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. The ISDN LAN Modem attempts to use its default IP address to communicate with the computer.
Changing Data Call Parameters Configuring the LAN Parameters 67 To configure LAN parameters, do the following. 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. 3 In the Subnet Mask field, review the default and enter a different subnet mask if required. 4 In the Local Domain Name field, if desired, enter a name you would like to use for your local domain. This field is not required.
CHAPTER 6: ADVANCED CONFIGURATION Understanding Data Call Parameters The Data Call Parameters window, shown in Figure 47, contains the following fields. Figure 47 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.
Changing Data Call Parameters 69 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. By default the threshold is 60%.
CHAPTER 6: ADVANCED CONFIGURATION Changing Voice Call Routing Understanding How Calls Are Routed This section describes how calls are routed to analog equipment attached to the ISDN LAN Modem’s voice ports and provides instructions for changing the way voice calls are routed. By default, incoming voice calls to telephone number 1 are routed to Phone port 1, and incoming voice calls to telephone number 2 are routed to Phone port 2. This default setting is illustrated in Figure 48.
Reserving DHCP Addresses 71 2 Specify which Phone port should handle calls associated with Telephone Number 1 by checking the appropriate phone port box. 3 If your ISDN line has two telephone numbers, specify which phone port should handle calls associated with Telephone Number 2. 4 Click Submit. If you want to password protect the configuration profile of the ISDN LAN Modem, refer to “Locking and Unlocking the Configuration.
CHAPTER 6: ADVANCED CONFIGURATION Changing Your Password To change the password you defined as part of the initial setup to restrict access to the ISDN LAN Modem, do the following. 1 From the ISDN LAN Modem main page, click the Password button. 2 Enter your new password in the Password field. 3 Enter your new password in the Password (repeat) field to verify the new password. 4 Click Submit.
Locking and Unlocking the Configuration 73 To set up your ISDN connection, do the following. 1 From the ISDN LAN Modem main page, click ISDN Parameters. The ISDN Parameters window appears. Figure 51 ISDN Parameters Screen 2 From the ISDN Switch Type drop-down list box, select the ISDN Switch Type required by your telephone company. 3 In the Telephone Number 1 field, enter the first telephone number associated with your ISDN line.
CHAPTER 6: ADVANCED CONFIGURATION 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. The ISDN LAN Modem main configuration page appears.
Configuring the ISDN LAN Modem from a Remote Location 75 7 Right click this new icon with your right mouse button and choose Properties. 8 Click the Server Type tab. For Windows 95 users: PPP, Windows 95, Windows NT 3.5, Internet should be chosen in the Type of Dial-Up Server list box. For Windows 98 users: PPP, Internet, Windows NT Server, Windows 98, should be chosen in the Type of Dial-Up Server list box. 9 Under Advanced Options, uncheck all boxes.
CHAPTER 6: ADVANCED CONFIGURATION
SUPPLEMENTARY VOICE CALL SERVICES 7 Supplementary Voice Services Before You Begin The ISDN LAN Modem supports the following supplementary voice services. ■ Call Waiting ■ Caller ID ■ Call Conference (Three-Way Calling) ■ Call Transfer ■ Voice Mail (Message Service) ■ Caller ID Name Display ■ Call Forwarding In order to use these services, they must also be supported on your ISDN line.
CHAPTER 7: SUPPLEMENTARY VOICE CALL S ERVICES Call Waiting Call Waiting allows you to place an active call on hold in order to answer another incoming call on the same telephone number. By default, Call Waiting is enabled on port 1 and disabled on port 2. Telephone companies typically provide Call Waiting support on telephone number 1 only. For Call Waiting support on telephone number 2, you will have to have this capability added to your ISDN line. For more information refer to Appendix E.
Call Waiting How to Use Call Waiting 79 To use Call Waiting, do the following. Table 1 How to Use Call Waiting How Do I Do This Answer a call using Call Waiting? When you hear the Call Waiting tone, press and release the switch hook button to put the first call on hold and connect to the second call. If you do not answer the second call, the caller will hear a ring.
CHAPTER 7: SUPPLEMENTARY VOICE CALL S ERVICES Caller ID The ISDN LAN Modem supports Caller ID and Caller ID Blocking. Caller ID Caller ID is supported on the ISDN LAN Modem. If you subscribe to this service, the telephone number of the calling party is displayed on the caller ID device connected to the ISDN LAN Modem’s phone port that is called. The name of the caller may or may not be displayed even if your caller ID device and service support this feature.
Flexible Calling Flexible Calling 81 Flexible Calling (also known as Flexible Call Offering (FCO)) is an additional service added to your ISDN line to allow you to use voice features such as Call Conference (Three Way Calling), Hold, Drop, Transfer and Message Service on telephones connected to the ISDN LAN Modem’s phone ports. If you are not sure whether your ISDN line supports Flexible Calling, check with your telephone company.
CHAPTER 7: SUPPLEMENTARY VOICE CALL S ERVICES Call Conference (Three-Way Calling) Call Conference (also referred to as Three-Way Calling or TWC) allows you to add another party to an existing call. This feature can be used whether you have received or have placed the first call. You cannot conference two incoming calls. You must initiate the second call in order to activate Call Conference.
Message Service/Voice Mail Message Service/Voice Mail 83 If you subscribe to Voice Mail on your ISDN line, then you have Message Service which tells you that you have new messages in your voice mail box. By default, Message Service is disabled. You must enable this feature on the ISDN LAN Modem to use it. The Alert LED on the front of the ISDN LAN Modem flashes when there are new messages in your voice mail box. Note that the Alert LED also flashes during firmware download.
CHAPTER 7: SUPPLEMENTARY VOICE CALL S ERVICES
8 PLACING, RECEIVING AND DISCONNECTING CALLS This chapter covers the following main topics: Placing Calls ■ Placing calls automatically and manually ■ Receiving calls ■ Disconnecting data calls You can place calls from your computer through the ISDN LAN Modem to a 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.
CHAPTER 8: PLACING, RECEIVING AND DISCONNECTING CALLS Placing a Call Manually Placing a Call Manually to an Existing Service Provider You can also manually place a call to an existing service provider or to a destination that has not been previously defined as long as the remote location provides an IP address dynamically during call setup. To place a call manually to a service provider that is already configured, do the following.
Receiving Calls 87 9 Specify the B channel rate or select TollMizer. Leave the B channel rate set to 64 Kbps unless your telephone company and the locations you will be connecting to only support 56 Kbps. TollMizer sends a data call over a voice circuit allowing you to save the typical cost difference between a voice and data call. Note that the destination you are calling must also support this feature (also referred to as Switched 56 Permissive or Data Over Voice).
CHAPTER 8: PLACING, RECEIVING AND DISCONNECTING CALLS ■ Reviewing ISDN LAN Modem statistics Refer to Chapter 9, “Reviewing Statistics,” for instructions. Incoming calls for data transfer are not supported. For example, you cannot call into the ISDN LAN Modem to use a computer as a server that others would dial into and use for downloading information. Receiving Voice Calls Voice calls received by the ISDN LAN Modem will be routed to the analog equipment connected to the voice ports.
Disconnecting Data Calls Disconnecting Calls Automatically Using Timers 89 There are a number of ways by which you can configure calls to be disconnected automatically. You can set timers and disconnect thresholds from the Data Call Parameters window. Specifically, the parameters you can set are as follows. Minimum Call Duration Enter the minimum length of a call that is measured before the ISDN LAN Modem detects inactivity on the connection and then starts an inactivity timer. The default is 2 minutes.
CHAPTER 8: PLACING, RECEIVING AND DISCONNECTING CALLS
9 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.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Monitoring LEDs Monitoring the ALERT LED If you are experiencing operational inconsistencies, monitor the ALERT, ISDN, B channel and LAN port status LEDs to isolate problems. Refer to Table 5 for instructions to resolve the problem. Press and release the Reset button and observe the ALERT LED. During power-up self-test, the ALERT LED will remain lit. ■ If the ALERT LED goes out, the test has been successful.
Monitoring LEDs Troubleshooting Problems Indicated by LEDs 93 Table Table 5 lists the states of ISDN LAN Modem LEDs which indicate errors and also provides possible causes and solutions. Table 5 Troubleshooting Problems Indicated by LEDs LED LED State Possible Cause Solution ALERT LED ALERT LED remains lit. An internal failure. Notify your reseller or technical support that the ISDN LAN Modem has failed the self-test. ALERT LED continues to flash.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Evaluating Symptoms and Solutions Table 6 lists symptoms of common problems, possible causes, and possible solutions. Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution Upon initial setup, communication between the ISDN LAN Modem and my computer cannot be established. Incompatible IP address on your computer. Reset the IP address on your computer. For Windows 98 and 95 users, run Winipcfg.exe.
Evaluating Symptoms and Solutions Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution ISDN LAN Modem has assigned all available IP addresses. From another computer attached to the ISDN LAN Modem, go to the LAN Modem’s main configuration page. Click Workstations. Select the name of computer you removed and then click Select. Click Release Workstation Entry. Reboot the workstation. The newlyadded workstation can now be assigned an IP address.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Table 6 Symptoms, Causes, and Solutions Symptom A computer on the LAN was replaced with another one and now the newly added computer cannot communicate with the ISDN LAN Modem. Possible Cause Solution Calls from the analog port may be blocked. From the Call Routing window, check the Phone Port 1 and Phone Port 2 boxes which are used for voice call routing. Make sure that the correct Phone Port box for that port is checked.
Evaluating Symptoms and Solutions Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution May be an incompatibility with Try reconnecting your call during off peak hours. If you the router into which you are are still unable to establish a Multilink PPP call, contact dialing. Some remote routers split your ISP to confirm that they support this feature. the two B channels of a Multilink PPP call between different routing devices, preventing the channels from being linked.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution Attempted to place a voice call over a directory number that is already in use for a data call. If this is the case, your ISDN line is configured to allow only one B channel per directory number. Contact you telephone company if you want to have simultaneous voice and data on both B channels.
Evaluating Symptoms and Solutions Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution Sending e-mail is occasionally slow when more than one workstation is sending e-mail to the same SMTP server. A limitation of NAT, the SMTP server uses a different port number than the one requested by the workstations sending e-mail so the LAN Modem does not know which of the 2 (or more) workstations to forward the response to. Therefore, the request is discarded.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE 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: http://www.remoteaccess.3com.com/support/docs/lanmodem/welcome.html and then bookmark this site for quick and easy access. If you are using the ISDN LAN Modem custom browser, click Updates from the menu bar.
Reviewing Statistics 101 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. 2 Select the type of statistics you would like to review. You can view the following types of statistics.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Understanding ISDN Information The ISDN statistics provided are as follows. Layer 1 status: Indicates whether layer 1, the physical connection, of the ISDN line is up or down. If layer 1 remains down after you attempt to place a call, there may be a problem with your ISDN line. First, check to ensure that the correct cable (labeled ISDN) is firmly connected to the ISDN LAN Modem and the wall jack.
Reviewing Statistics 103 Table 10 Current Call Information Description Current Call Information For This Call Type Calling telephone or port number Voice or data For an incoming voice or data call, indicates the telephone number of the calling party. For an outgoing voice call, indicates the port from which the call was placed. (For outgoing data calls, no information is provided.
CHAPTER 9: TROUBLESHOOTING AND M AINTENANCE Last Call Information For This Call Type Description Called telephone number Voice or data For the last outgoing data call, indicates the telephone number dialed to reach the service provider for the current call. For the last incoming voice or data call, indicates the telephone number dialed from the far end. (For outgoing voice calls, no information is provided.) Reason for call going down Voice or data Indicates why the last call was disconnected.
A NETWORKING PRIMER This chapter provides a description of basic networking concepts and terminology to help you better understand the key functionality of the ISDN LAN Modem. What is a network? What is a LAN? A network is a set of computers and other devices such as printers, modems, and scanners that are connected together either directly via physical cables or indirectly via dial-up telephone services.
APPENDIX A: NETWORKING PRIMER How does a LAN connect to a WAN? You can connect a LAN to a WAN through a number of devices such as a router or a bridge that can place a call to the remote LAN using a dial-up telephone service such as ISDN. Routers and bridges are devices that link networks.
What is a network? 107 Internet/Intranet or online service B channel 1 OfficeConnect¤ ISDN LAN Modem LAN STATUS Alert PWR ISDN B1 B2 Tx Coll 1 2 3 4 OfficeConnect® ISDN LAN Modem B channel 2 3 Com B channel 1 B channel 2 Remote office LAN Public telephone network ISDN BRI line Figure 56 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 57.
APPENDIX A: NETWORKING PRIMER What is an IP Address? An IP address is a 32 bit address used by TCP/IP to uniquely identify the location of 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. The structure of this 32-bit address varies depending upon the size of the network on which the device is located.
What is a network? 109 What is DHCP? Dynamic Host Configuration Protocol automatically assigns a unique, temporary IP address to a newly attached computer on an IP network. What is DNS? Domain Name Service translates the common alphabetic name into the numeric IP address. For example, floyds_PC is translated to 192.168.1.2.
APPENDIX A: NETWORKING PRIMER
B USING THE CUSTOM WEB BROWSER 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 59, making it easier to use. If you use a different Web browser, make sure that it supports frames. (Netscape 3.0 and later and Internet Explorer 3.0 and later both support frames.
APPENDIX B: USING THE C USTOM WEB B ROWSER ■ User Guide Click here to jump to the Internet location of the OfficeConnect ISDN LAN Modem User Guide. Using Favorites Under the Favorites menu, a subcategory labeled 3Com sites lists several helpful sites already bookmarked for you. These include: ■ 3Com Corporate This takes you to the 3Com Corporate Web site. ■ 3Com Remote Access This takes you to the 3Com Remote Access Web site. ■ 3Com Shopping This takes you to the 3Com Shopping Network.
C ISDN LAN MODEM FACTORY DEFAULTS Table 13 ISDN LAN Modem Factory Defaults LAN Parameters LAN Modem IP Address* 192.168.1.1 Subnet Mask 255.255.255.
APPENDIX C: ISDN LAN MODEM FACTORY D EFAULTS
D ISDN LAN MODEM SPECIFICATIONS Refer to Table 14 for the ISDN LAN Modem specifications. Table 14 ISDN LAN Modem Specifications Network Interface ISDN Basic rate telephone service provided by the telephone company Network (ISDN) Connector RJ49C Facility Interface Code 02IS5 ISDN Interface Type U (integrated NT1) LAN Interface Ethernet IEEE 802.3 10BASE-T standard Physical Dimensions Length 8.66 in (22.0 cm) Width 5.44 in (13.8 cm) Height 1.56 in (4.
APPENDIX D: ISDN LAN MODEM SPECIFICATIONS * You must use the power supply provided with your ISDN LAN Modem. 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.
E ORDERING ISDN SERVICE This appendix describes how to order ISDN service. Refer to the appropriate section. ■ If you are ordering ISDN for the first time, refer to “If You Place Your ISDN Order Through 3Com” to have 3Com order ISDN service for you, free of charge. ■ To call your telephone company and order ISDN yourself, refer to “If You Place Your ISDN Order Through the Telephone Company.” ■ If you already have ISDN, refer to “What If I Already Have ISDN Service?”.
APPENDIX E: ORDERING ISDN S ERVICE Placing Your Order To order ISDN service from the telephone company for the ISDN LAN Modem: 1 Call the telephone company and ask for the ISDN representative. 2 Tell the representative that you would like to place an order for ISDN service for an OfficeConnect ISDN LAN Modem. ■ For ISDN service without Voice Mail, request that your line be provisioned according to Bellcore Capability Package U or EZ-ISDN 1.
Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A 119 Package U or EZ-ISDN 1 includes automatic support on telephone number 1 for the following supplementary voice features, which are also supported by the ISDN LAN Modem: ■ Call Waiting ■ Call Conference (or Three-Way Calling) ■ Call Transfer ■ Call Forwarding ■ Caller ID Package V or EZ-ISDN 1A includes automatic support on telephone number 1 for
APPENDIX E: ORDERING ISDN S ERVICE Supplementary Voice Services on Telephone Number 1 Only ■ Under IOC U, EZ-ISDN 1, V and EZ-ISDN 1A, automatic support for the following features applies only to telephone number 1: ■ Call Waiting ■ Call Conference ■ Call Transfer ■ Call Forwarding ■ Voice Mail (for V and EZ-ISDN 1A) If you want support for these features on your second telephone number in addition to your first, you must ask your telephone company to enable the following extra services on
What If I Already Have ISDN Service? 121 For Nortel DMS-100® Switches If your line is provisioned on a Nortel DMS-100® switch, then regardless of the ISDN Ordering Code you choose, you cannot have simultaneous voice and data on the same phone number because of a limitation with the central office switches.
APPENDIX E: ORDERING ISDN S ERVICE EZ-ISDN 1 (if you do not want Voice Mail) or Package V or EZ-ISDN 1A (if you want Voice Mail). If you make this change, however, you should be aware that certain constraints apply to both U/EZ-ISDN 1 and V/EZ-ISDN 1A -- in particular, that these codes do not provide support for simultaneous voice and data on the same Directory Number.
GLOSSARY B channel Bearer channel. In ISDN communications, a B channel transmits data or voice traffic at a rate of up to 64 Kbps. BRI Basic Rate Interface. A BRI line is one of two access methods to the ISDN; PRI is the other. Each BRI consists of two 64 Kbps B channels and one 16 Kbps D channel for each ISDN line. BACP/BAP Bandwidth Allocation Control Protocol (BACP) and Bandwidth Allocation Protocol (BAP) are used in conjunction with the Multilink PPP feature.
GLOSSARY firmware Firmware is the code which resides in the ISDN Modem and controls its behavior. It differs from software in the form of programs that run on your computer. IP address An IP address is a set of numbers that uniquely identifies each device in a network. ISDN ISP Kbps Layer 1 MS-CHAP Integrated Services Digital Network.
GLOSSARY PRI router 125 Primary Rate Interface. A PRI line is one of two access methods to the ISDN; BRI is the other. In North America, each PRI consists of twenty-three 64 Kbps B channels and one 64 Kbps D channel. A router is a device that links networks. SPID Service Profile Identifier. If required, this number is supplied to you by the telephone company. Typically, if your ISDN line has only one telephone number, a SPID is not required. TCP/IP Transmission Control Protocol/Internet Protocol.
GLOSSARY
INDEX Dynamic Bandwidth Allocation 22 dynamic IP address determining if your computer has a dynamic IP address 44 F A analog equipment installation 30 B B channel LEDs 92, 93 BACP 21, 123 bandwidth on demand parameters 89 BAP 21, 123 C call conference 82 call forwarding 83 call routing analog ports 71 call transfer 82 call waiting 78 configuring 78 using 79 caller ID 80 blocking 80 Challenge Handshake Authentication Protocol (CHAP) 14, 123 changing data call parameters 67 supplementary voice servic
INDEX U UDP support for Internet games 15 unlocking the configuration 73 V voice call routing changing 70 understanding 70 voice features . See supplementary voice services. voice mail 83 See also message service.
3Com Corporation LIMITED WARRANTY OfficeConnect ISDN LAN Modem HARDWARE 3Com warrants this hardware product to be free from defects in workmanship and materials, under normal use and service, for the following length of time from the date of purchase from 3Com or its authorized reseller: Lifetime, except that the fan and power supply hardware (if any) are warranted for one (1) year.
Dead- or Defective-on-Arrival. In the event a product completely fails to function or exhibits a defect in materials or workmanship within the first forty-eight (48) hours of installation but no later than thirty (30) days after the date of purchase, and this is verified by 3Com, it will be considered dead- or defective-on-arrival (DOA) and a replacement shall be provided by advance replacement.
The telephone company may make changes in its facilities, equipment, operations, or procedures that could effect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make necessary modifications to maintain uninterrupted service. If trouble is experienced with this device, for repair and warranty information, please refer to the Technical Support insert.
