3Com Dual 56K manuale d’uso

http://www.3com.com/ Dual 56K L AN Modem User Guide MODEL NO. 3C888 Part No. 1.018.1752 Published May 2000 http://www .3com.com/[...]

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 3Com Corporation, 2000. All rights reserved. No part of this documentation may be repr oduced 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. 3Com Corpora[...]

I MPORTANT S AFETY I NFORMATION Important Safety Information W ARNING: Warnings contain directions that you must follow for your personal safety . Follow all instructions carefully . Please read the following information carefully and thoroughly before installing the unit: ■ T ake exceptional care during the installation and removal of the unit. [...]

ist, daß die Spannung zwischen zwei zugänglichen Bauteilen einen Sicherheitswert nicht übersteigt (42,2 V Spitzenspannung bzw. 60 V Gleichspannung). ■ Die Einheit enthält keine Sicherungen oder sonstige Bauteile, die vom Benutzer ausgewechselt oder gewartet werden können. Sollte ein physikalischer Fehler auftreten, der mit den in diesem Hand[...]

■ Puertos con etiqueta LAN o Phone= SELV. SELV (Safety Extra Low Voltage) es un circuito secundario diseñado para que el voltaje entre dos puntos accesibles no exceda límites seguros (42,2 V punta ó 60 V CC) en circunstancias normales o de fallo simple. ■ La unidad no contiene fusibles ni otros componentes que el usuario pueda cambiar o repa[...]

■ If the unit shows signs of a distinct change in performance. ■ Never install telephone wires during a lightning storm, or install telephone connection sockets in wet locations, unless the socket is specifically designed for wet locations. ■ Do not touch uninstalled telephone wires or terminals unless the telephone line has been disconnecte[...]

T ABLE OF C ONTENTS I MPORTANT S AFETY I NFORMATION 3 Wichtige Sicherheits-Informationen 3 Important Notice de Securite 4 Medidas de Seguridad Importantes 4 Informazioni Importanti per la Sicurezza 5 Additional Safety Information 5 A BOUT T HIS G UIDE Introduction 11 How to Use This Guide 11 Conventions 12 Y ear 2000 Compliance 12 I NTRODUCTION Int[...]

Setting Up Y our Computer If Y ou Have a Static IP Addr ess 39 I NSTALLING THE D UAL 56K LAN M ODEM Before Y ou Start the Installation 43 C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS T ypical Configuration 47 Changing the LAN Modem IP Address for Static IP Users 52 The LAN Modem Main Configuration Page 53 Connecting an External Hub[...]

Placing a Call from a Client-side LAN Modem 118 P LACING , R ECEIVING AND D ISCONNECTING C ALLS Using the LAN Modem Desktop Manager (Windows only) 119 Placing Calls 119 Receiving Calls 121 Disconnecting Calls 122 T ROUBLESHOOTING AND M AINTENANCE Checking the Basics 125 Monitoring LEDs 125 Evaluating Symptoms and Solutions 126 Finding More Informat[...]

G LOSSARY 3C OM C ORPORATION L IMITED L IFETIME W ARRANTY R EGULATORY AND A PROVAL I NFORMATION[...]

A BOUT T HIS G UIDE About This Guide provides an overview of this User Guide, describes guide conventions, and shows you where to look for specific information. Introduction This guide tells you how to install and configur e the Dual 56K LAN Modem and provides descriptions of key applications and networking concepts. Audience Description This gui[...]

12 A BOUT T HIS G UIDE Conventions T able 2 and T able 3 list conventions that ar e used throughout this guide. Y ear 2000 Compliance The OfficeConnect LAN Modem is Y ear 2000 compliant. Specifically , its system clock is capable of accepting and storing dates including and beyond the year 2000. For information on Y ear 2000 compliance and 3Com p[...]

1 I NTRODUCTION This chapter provides an overview of the Of ficeConnect ® Dual 56K LAN Modem, referr ed to throughout this document as the Dual 56K LAN Modem, or simply as the LAN Modem. Introduction The Dual 56K LAN Modem is an easy-to-install, Local Ar ea Network (LAN) to W ide Area Network (W AN), analog IP router . The LAN Modem provides four[...]

14 C HAPTER 1: I NTRODUCTION Applications The primary applications for the Dual 56K LAN Modem are: ■ Local networking with shared, dial-out access to the Internet ■ Local networking with shared, dial-out access to a private network, such as a remote corporate of fice LAN (this can include indirect Internet access through the private network’[...]

Applications 15 Local Networking with Shared Access to the Internet and a Private Network Users can share simultaneous access to both the Internet and a remote private network while they continue to network locally , as shown in Figure 3. Figure 3 Local Networking with Shar ed Access to the Internet and a Remote Private Network Combined Dial-in and[...]

16 C HAPTER 1: I NTRODUCTION Hardwar e Description The following is an overview of the Dual 56K LAN Modem hardwar e, including the function of the front panel LEDs and back panel connectors. Front Panel LED Description The front panel contains the LEDs illustrated in Figur e 5. Figure 5 Dual 56K LAN Modem Fr ont Panel The functions of the front pan[...]

Hardware Description 17 Back Panel Connector Description The back panel contains the connectors illustrated in Figure 6. Figure 6 Dual 56K LAN Modem Back Panel From left to right, the back panel consists of the following: ■ Power: Connect the power module cable to this port. ■ RESET : Press this button to re-initialize or factory r e-set the un[...]

18 C HAPTER 1: I NTRODUCTION Features Ease of Installation and Use ■ Web-based, point-and-click user interface for easy configuration ■ Automatic Internet configuration verification via your Inter net Service Provider (ISP) ■ Web-based, context-sensitive online help ■ Dial-in W izard for easy configuration of dial-in setup ■ LAN Modem[...]

Features 19 ■ Network Address T ranslation (NA T) between LAN and W AN, which allows multiple users on the LAN to share a single r emote connection and user account. ■ Intelligent NA T , an enhancement to NA T which enables UDP applications to work with the Dual 56K LAN Modem. ■ Multiplexing traffic fr om several computers to remote destinat[...]

20 C HAPTER 1: I NTRODUCTION Modulation Schemes ■ V .90 (backwards-compatible with all US Robotics 56K Standards) ■ ITU-T V .34+ ■ ITU-T V .34 ■ ITU-T V .32bis ■ ITU-T V .32 ■ ITU-T V .22bis ■ ITU-T V .22 ■ ITU-T V .23 ■ Bell 212A ■ ITU-T V .21 ■ Bell 103 Security ■ P AP , CHAP and MS-CHAP support ■ Callback support for di[...]

2 D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION This chapter explains the Dual 56K LAN Modem’ s key functionality for users who wish to gain a fuller understanding of the LAN Modem before attempting to install and configure the unit. The following topics ar e covered: ■ LAN Side Connectivity: Installing an Ethernet Hub ■ W an Side: The T [...]

22 C HAPTER 2: D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION W an Side: The T wo 56K Modems On the W ide Area Network (W AN) side of the Dual 56K LAN Modem, up to 25 users can share access to the W AN through use of the LAN Modem’ s two internal 56K modems. When you configure the Dual 56K LAN Modem, you can choose one of two ways to use two a[...]

Using the Modem Channels 23 If one or more Service Pr oviders are configur ed as a Multilink-enabled connection, one high-speed call at a time is possible whenever one of these calls is in session, as shown in Figure 9. Figure 9 One High-Speed Connection to a Single Location Sharing an Already Established Connection In either of the above scenario[...]

24 C HAPTER 2: D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION Dial-out Call Routing When the LAN Modem makes an outgoing call, it follows a specific order for routing data packets, based on the destination Network ID (that is, the IP addr ess and subnet mask) associated with the packet. If you plan to configure mor e than one Service Provider i[...]

Dial-in Functionality 25 Dial-in Functionality When you set up the LAN Modem for dial-in support, you can configure up to ten designated Dial-in Users to dial in to the local LAN. In addition, you must configure Dial-in Global Parameters which apply to all dial-in calls. When you configure Dial-in Global Parameters, you choose whether to allow o[...]

26 C HAPTER 2: D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION Simultaneous Dial-in Calls from T wo Different Locations If you configure the LAN Modem to make both channels available for dial-in calls, each as a single channel connection, you can have simultaneous dial-in calls from two differ ent locations, as shown in Figure 12. Figure 12 Simul[...]

Understanding Multilink PPP and Other Line Usage Options 27 Callback Capability with Dial-in Calls When you configure the LAN Modem for dial-in support, you can choose to enable Callback in each Dial-User profile that you cr eate. When Callback is enabled, the LAN Modem is designed to identify the authorized Dial-in User , drop the incoming call,[...]

28 C HAPTER 2: D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION When this option is configured, both modem channels ar e used every time a connection is made to a remote destination, r egardless of the amount of traf fic being generated. The DBA feature is not utilized, because both channels ar e used for every call. Make sure that your r emote d[...]

Support for Virtual Private Networks (VPNs) 29 Support for V irtual Private Networks (VPNs) Through its support of the Point-to-Point T unnel Protocol (PPTP), the Dual 56K LAN Modem allows users on any workstation attached to the LAN Modem to communicate with a remote private network over the Internet using a Virtual Private Network (VPN) tunnel, p[...]

30 C HAPTER 2: D UAL 56K LAN M ODEM F UNCTIONALITY D ESCRIPTION[...]

3 B EFORE Y OU B EGIN This chapter explains how to set up your Dual 56K LAN Modem, and guides you through the basic pr e-installation checks that you should perform on all workstations that you will attach to the LAN Modem. This includes checking each workstations’ TCP/IP and IP address settings to determine whether it is set up for dynamic or st[...]

32 C HAPTER 3: B EFORE Y OU B EGIN ■ A Web Br owser , such as Netscape Navigator (4.0 or later) or Microsoft Internet Explorer (4.0 or later). Y our computer is used to configure the LAN Modem, in addition to being one of its networked devices. Y ou use the web browser installed on your computer to access the LAN Modem’ s internal configurati[...]

Checking TCP/IP and IP Address Settings 33 ■ Sets applications which previously used a Dial-Up Networking connection to use a LAN connection. ■ (Optional) Configures a statically-configur ed PC to access the LAN Modem’ s configuration screens, and, if you choose, changes the LAN Modem’ s IP address to communicate with a statically-confi[...]

34 C HAPTER 3: B EFORE Y OU B EGIN Adding TCP/IP to Y our Protocols List If you ran the EZ-LAN Wizard on your computer and found that TCP/IP was not bound to your Ethernet adapter , follow the steps to add TCP/IP to your protocols list, according to your operating system: Windows 95 and 98 T o add TCP/IP to your protocols list for Windows 95 or 98:[...]

Adding TCP/IP to Your Protocols List 35 The Select Network Protocol dialog box appears. Figure 18 Select Network Pr otocol Dialog Box 4 From the Manufactur ers list box, select Microsoft , and then from the Network Protocols list box, select TCP/IP . 5 Click OK to exit the Select Network Protocol Dialog box. 6 Click OK again to exit the Network Dia[...]

36 C HAPTER 3: B EFORE Y OU B EGIN 2 Select the Protocols tab, as shown in Figure 19. Figure 19 Windows NT Protocols Confi guration W indow 3 Click Add . The Select Network Protocol window appears as shown in Figur e 20. Figure 20 Select Network Pr otocol Window 4 Select TCP/IP Protocol, and then click OK .[...]

Adding TCP/IP to Your Protocols List 37 The following message appears. Figure 21 DHCP Message Box 5 Select Ye s , unless you know that you will be setting up the LAN Modem for use on a static network. By selecting Y es, you are setting up the LAN Modem to act as your DHCP server . If you will be connecting to a static network, select No. Y ou are p[...]

38 C HAPTER 3: B EFORE Y OU B EGIN Figure 23 Micr osoft TCP/IP Properties Window 9 From the Adapter dr op-down list box, select the Ethernet card that is connected to the Dual 56K LAN Modem. 10 Select Obtain an IP Address from a DHCP Server , unless you are setting up for static IP addressing. If this LAN uses static IP addr esses, enter the IP add[...]

Setting Up Your Computer If You Have a Static IP Address 39 Setting Up Y our Computer If Y ou Have a Static IP Address If your computer has a static IP address and you want to keep this for use with a network that uses or will use static IP addressing, you must make certain changes to the LAN Modem’ s default parameters. These changes will allow [...]

40 C HAPTER 3: B EFORE Y OU B EGIN Figure 24 Set Up Steps for Statically Confi gured W orkstation Setup Steps for a Static Workstation The first step is to recor d your current, statically-configur ed workstation’ s network settings and set them aside for later use. Then you must temporarily change your statically-configured workstation’ s [...]

Setting Up Your Computer If You Have a Static IP Address 41 6 Change the IP address and subnet mask fields as follows (this allows your workstation to be recognized by the LAN Modem): ■ In the IP Address field, enter 192.168.1.2 ■ In the Subnet Mask field, enter 255.255.255.224 7 Click the Gateway tab. 8 Change the Gateway IP address to 192.[...]

42 C HAPTER 3: B EFORE Y OU B EGIN For Windows NT 4.0 Users 1 From the Start menu, select Settings and then Control Panel . 2 Double-click Network, and then click the Protocols tab. 3 Highlight TCP/IP , and then click Properties . 4 Click the IP Address tab, and then select the Ethernet card associated with the Dual 56K LAN Modem from the Adapter d[...]

4 I NSTALLING THE D UAL 56K LAN M ODEM This chapter explains how to connect your computer to the Dual 56K LAN Modem and install the cables in preparation for configuring the unit. When you first set up the LAN Modem, you initially connect only one computer to the unit. After you have finished configuring the LAN Modem from that computer using a[...]

44 C HAPTER 4: I NSTALLING THE D UAL 56K LAN M ODEM Figure 26 Analog Cable Connections Y ou may need to use a countr y-specific phone adapter (optional). Installing Analog Equipment Y ou can connect up to two analog devices, such as a touch-tone telephone, answering machine, or fax machine, to the Dual 56K LAN Modem’ s two pass-through PHONE por[...]

Before You Start the Installation 45 5 Connect the power supply to the back of the unit, as shown in Figure 28. Figure 28 Power Cable Connection 6 Plug the other end of the power module into a surge-protected, standar d wall outlet, and watch for the following front panel LED signals: ■ The PWR and AA indicator LEDs light up. ■ The ALERT LED ?[...]

46 C HAPTER 4: I NSTALLING THE D UAL 56K LAN M ODEM[...]

5 C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS This chapter explains how to configure the Dual 56K LAN Modem for the most common application — shared Internet access. If you followed the instructions provided in the Getting Started Guide , you have alr eady configured the LAN Modem for shared Internet access. For more advanced ap[...]

48 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS In addition, you should have the following information ready as you go thr ough the configuration: ■ Y our Analog T elephone Number or Numbers ■ ISP T elephone Number ■ ISP User ID and Password ■ ISP DNS Address (r equired only if your ISP does not use dynamic IP ad[...]

Typical Configuration 49 The Set Password window appears. This passwor d is used to guard access to the Dual 56K LAN Modem’ s configuration program. If you would like to r estrict access to the configuration settings, select a password and r ecord it in a safe place. Figure 31 Set Passwor d Window 3 Enter a password in the Passwor d field and [...]

50 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS The Set Country and T elephone Numbers screen opens, as shown in Figur e 32. Figure 32 Set Country and T elephone Numbers Screen 5 Choose your country from the dr op-down list. 6 Enter your analog telephone number(s) including area code. This allows you to take advantage of [...]

Typical Configuration 51 Figure 33 ISP Wizard Window 8 In the ISP Name field, choose any name that you wish to associate with your ISP . 9 In the Dial Out Prefix field, enter the number r equired to access an outside line. An example would be dialing “9” for use with a PBX. If not requir ed, leave this field blank. 10 (Optional) In the Call[...]

52 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS The LAN Modem Support Web Site From the LAN Modem Support web site, you can r egister your Dual 56K LAN Modem, read any new and up-to-date information about your pr oduct, and perform firmware upgrades to the LAN Modem as they become available. To access this LAN Modem Supp[...]

The LAN Modem Main Configuration Page 53 Setting Up Additional Service Provider Pr o fi les Now that you have finished configuring your Dual 56K LAN Modem, you can set up a total of four additional Service Provider pr ofiles. The LAN Modem defines any remote dial-out destination (including the ISP pr ofile you just configured) as a Service P[...]

54 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS Figure 34 Dual 56K LAN Modem Main Confi guration Home Page Even though the Main Configuration Page and its associated links are viewed within your web browser , you are looking at screens which reside inside the LAN Modem firmware, rather than on the W orld Wide Web. The [...]

The LAN Modem Main Configuration Page 55 be disconnected because of network inactivity , keeping telephone usage and Internet access costs down. ■ Current Call Status: T akes you to the Current Call Information page, where you can view information on an active call or calls. Links from the Buttons ■ Home: T akes you back to the Main Configurat[...]

56 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS Connecting an Exter nal Hub to the Dual 56K LAN Modem Once you have finished configuring the Dual 56K LAN Modem, you can connect up to three additional computers, or a combination of an external Ethernet hub and computers to increase the number of users for W AN access to [...]

Connecting an External Hub to the Dual 56K LAN Modem 57 T o connect the hub to the Dual 56K LAN Modem: 1 Insert one end of the Ethernet cable into any available LAN port on the back of the LAN Modem, as shown in Figure 36. Figure 36 10BASE-T Hub-to-LAN Modem Connection 2 Insert the opposite end of the cable into one of the ports on the external Eth[...]

58 C HAPTER 5: C ONFIGURING THE D UAL 56K LAN M ODEM FOR I NTERNET A CCESS[...]

6 C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS This chapter explains how to configure the Dual 56K LAN Modem for shar ed access to a private network, such as a remote corporate of fice LAN. This includes the option of connecting to the Internet through your private network, if your private network allows you this option. Fo[...]

60 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS Con fi guration Steps The following steps guide you through configuration of the Dual 56K LAN Modem for shared access to a r emote private network. If you ran the computer pre-checks in Chapter 3 and found that your computer was set up for static IP addressing , re[...]

Configuration Steps 61 Figure 38 Set Passwor d Window 3 (Optional) Enter a Password in the Passwor d field, and enter it again in the Password (r epeat) field to confirm it. If 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 Set Country and T elephone Number[...]

62 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS The ISP W izard appears. 7 Click Abort to bypass the ISP W izard and go dir ectly to the LAN Modem’ s Main Configuration Page , also called the WebWizard. The LAN Modem homepage opens, as shown in Figure 40. Figure 40 Dual 56K LAN Modem Main Confi guration Home P[...]

Configuration Steps 63 Figure 41 Service Pr ovider Selection Window 9 Select New (Private Network) from the dr op-down list box, and click Select .[...]

64 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS The Private Network Parameters window appears, as shown in Figure 42. Figure 42 Private Network Parameters Window 10 In the Name field, enter a name for this remote destination, such as the location of the remote of fice. 11 In the Dial Out Prefix field, enter th[...]

Configuration Steps 65 dial out prefix, leave the Dial Out Prefix field blank and enter that prefix value as part of the individual telephone number field itself (for example, ‘918005551000’ ). 13 In the T elephone Number 1 field, enter the telephone number that you obtained from your Network Administrator for accessing this private netwo[...]

66 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS 21 Choose whether or not you want users on the LAN to be able to access the Internet through your private network’ s dir ect Internet connection, if your private network allows you this option . 22 Choose whether or not you would like to use PPP Data Compression wh[...]

Changing the LAN Modem IP Address for Static IP Users 67 This completes the configuration for private network access. A message appears indicating that your parameters have been set. If a connection script is necessary , refer to Chapter 7, “Using a Connection Script,” for assistance. If you chose to password-protect the configuration profil[...]

68 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS If you have an ISP account and would like to set up an Internet Service Provider profile for shar ed Internet access, refer to Chapter 7, “Configuring Additional Service Providers.” The LAN Modem Main Con fi guration Page Now that you have performed the initia[...]

The LAN Modem Main Configuration Page 69 ■ LAN Parameters: T akes you to the LAN Parameters page, where you can configure Ethernet parameters for your LAN Modem. ■ Data Call Parameters: T akes you to the Data Call Parameters page, where you can change settings for Multilink calls and set inactivity timers to allow calls to be disconnected beca[...]

70 C HAPTER 6: C ONFIGURING THE D UAL 56K LAN M ODEM FOR P RIVATE N ETWORK A CCESS The LAN Modem Support Web Site If you configured your LAN Modem for indir ect access to the Internet through your private network, you may wish to visit the LAN Modem Support web site, where you can r egister your Dual 56K LAN Modem, read any new and up-to-date info[...]

7 A DVANCED C ONFIGURATION This chapter provides instructions on setting up additional Service Pr ovider profiles (Internet or Private Network), changing your Dual 56K LAN Modem’ s default settings, and configuring advanced parameters. Y ou should first have configured the LAN Modem for Internet access and/or Private Network access following [...]

72 C HAPTER 7: A DVANCED C ONFIGURATION Adding an Internet Service Provider If you have already configur ed one Internet Service Provider using the ISP W izard, as part the initial setup, follow the instructions in this section to add another Internet Service Provider . Before you configur e an additional Internet Service Provider , have the foll[...]

Configuring Additional Service Providers 73 The Internet Service Provider Parameters window appears. Figure 45 ISP Parameters Window 3 In the Name field, choose any name that you wish to associate with this ISP . 4 In the Dial Out Prefix field, if applicable, enter the number r equired by your location to reach an outside line, if necessary . An[...]

74 C HAPTER 7: A DVANCED C ONFIGURATION 6 In the T elephone Number 1 field, enter the telephone number you must dial in order to r each your ISP . 7 (Optional) If your ISP has a second remote access number , enter it in the designated field, and select Alternate or Multilink from the dr op-down list (that is, choose whether you want to dial this [...]

Configuring Additional Service Providers 75 With NA T enabled, the LAN Modem makes translations between a single (Internet-routable) IP address issued to it dynamically by the ISP and individual IP addresses of the computers on the LAN (these are also dynamically assigned, but by the LAN Modem). This translation allows multiple users on the LAN to [...]

76 C HAPTER 7: A DVANCED C ONFIGURATION Adding a Private Network Service Provider T o add a service provider pr ofile for connection to a remote private network, follow the instructions provided in Chapter 6, “Configuring the Dual 56K LAN Modem for Private Network Access .” Editing Service Provider Pro fi les The following steps allow you to[...]

Using a Connection Script 77 If you have more than one ISP configured, all automatic calls, such as a call to the Internet as a result of launching a Web browser , will be routed to the ISP listed in the first column of the table. If you want your automatic calls to be routed to one of the other listed ISPs, clear the box(es) for any ISP(s) that [...]

78 C HAPTER 7: A DVANCED C ONFIGURATION . Figure 46 Script Confi guration Page Creating a Connection Script Y ou can create a script from any other text editor of your choice and copy and paste the script directly into the Script Configuration text box. Or you may use the buttons located along the left side of the script window to guide you throu[...]

Using a Connection Script 79 execution will abort. The maximum string length is 64 characters, and the acceptable second is between 1-60. ■ The End command completes your script. The last line of your script must conclude with end . Using the Con fi guration Buttons T o create a connection script using the configuration buttons, do the followin[...]

80 C HAPTER 7: A DVANCED C ONFIGURATION Add any additional T ransmit or WaitFor text as requir ed. Note that a carriage return is simulated by including ^M within the quotation marks of your transmitted text. For example: transmit “mypassword^M” will send your password along with a carriage return. 12 Click End when your script is complete. The[...]

Configuring LAN Parameters 81 Con fi guring LAN Parameters This section tells you how to configure the parameters of your LAN. A description of each LAN parameter is provided, followed by the configuration steps. The LAN (Ethernet) Parameters window is shown in Figure 48. Figure 48 LAN (Ethernet) Parameters Window Understanding LAN Parameters Th[...]

82 C HAPTER 7: A DVANCED C ONFIGURATION reconfigure the workstations’ IP addresses via the W orkstations Parameters window . For a LAN using dynamic IP addresses, restart your workstation to acquire a new IP address. Or , if you have W indows 95 or 98, launch winipcfg.exe (probably located in your Windows director y), and click Release All and t[...]

Configuring V.90 Modem Control Parameters 83 4 In the Local Domain Name field, you may choose to enter a name to identify this particular LAN on a network. Note that this field is not requir ed. Leave blank if you are unsur e about how to configure a local domain name. 5 Check the Enable DHCP server box to enable it or clear the box to disable i[...]

84 C HAPTER 7: A DVANCED C ONFIGURATION Changing Modem Controls T o access and make changes to the Modem Control parameters, do the following. 1 From the Main Configuration Page, click the Service Providers icon. 2 Choose the service provider whose associated modem parameters you want to change, and click Select . The procedure for accessing the M[...]

Changing Data Call Parameters 85 6 Click Submit to save your changes. Note that each service provider (up to four) has its own associated Modem Settings profile. Changes made to one service provider will affect only that particular service provider . Changing Data Call Parameters This section explains how to configure Data Call Parameter settings[...]

86 C HAPTER 7: A DVANCED C ONFIGURATION Timeout V alues Minimum Call Duration for outgoing calls. The minimum call duration is the minimum length of time that a call must stay up before an inactivity timer can begin. The default is two minutes. Disconnecting an Outgoing Automatic Data Call. An automatic data call is made by the LAN Modem whenever i[...]

Specifying a WINS Server Address 87 indicate the bandwidth percentage thr eshold at which to allocate of remove the second channel. By default this threshold is 60% . Connect Delay . If you had specified use of the second channel “only as needed” under your Service Provider settings, indicate the length of time that the LAN Modem should wait b[...]

88 C HAPTER 7: A DVANCED C ONFIGURATION 4 Click Submit . Con fi guring the Local DNS T able The Dual 56K LAN Modem includes a local DNS T able for configuring up to ten static DNS entries. This allows the LAN Modem to resolve designated IP addr esses locally . The Local DNS T able can be used to suppress spurious calls which can occur when an app[...]

Reserving DHCP Addresses 89 Figure 51 Local DNS T able 3 Enter the domain names and IP addresses as desir ed, and click Submit to save changes. Reserving DHCP Addresses If you have workstations on your LAN with static IP addr esses and other workstations on the same LAN with dynamic IP addresses, it is r ecommended that you reserve the static IP ad[...]

90 C HAPTER 7: A DVANCED C ONFIGURATION 3 Enter the same password in the Passwor d (repeat) field to verify . Make sure you have deleted the old password completely before reentering the new password. 4 Check the box if you wish to disable password pr otection for the Manual Calling screen only . This allows workstations on the LAN to access only [...]

Using Selective Password Protection 91 Using Selective Password Protection Y ou can set up partial password protection so that workstations may access only the Manual Calling screen, allowing them to manually place and r eceive calls only . In this case, all other WebWizard pages r emain inaccessible. Note that enabling selective password pr otecti[...]

92 C HAPTER 7: A DVANCED C ONFIGURATION Changing the Remote Administration Password By default, the Dual 56K LAN Modem’ s default Remote Administration Username is Admin , and the Password is 1234. For security purposes, it is r ecommended that you change the default password. T o do so, follow these steps: 1 From the Dual 56K LAN Modem Main Con [...]

Configuring the LAN Modem from a Remote Location 93 Con fi guring the LAN Modem Remotely via an Analog Modem T o dial into a LAN Modem from a r emote location using an analog modem and W indows 95/98 Dial-Up Networking, follow these steps: 1 Click Start , Programs , Accessories , (W indows 98 users select Communications ) and select Dial-Up Networ[...]

94 C HAPTER 7: A DVANCED C ONFIGURATION 20 Once your call has been established, launch a Web br owser on your local computer . The Web br owser attempts to load its default Start Page. Click Stop to cancel this procedur e. 21 Enter the following address in your W eb browser’ s addr ess bar: http://192.168.1.1 to go to the remote LAN Modem’ s Ma[...]

8 C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT This chapter describes how to configure the LAN Modem for dial-in support. The following topics are cover ed. ■ Understanding Dial-in Basics ■ Understanding the Three Dial-in Pr ofile T ypes ■ Part I. Configuring the Server -side Dual 56K LAN Modem for Dial-in Support ■ Part[...]

96 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Understanding the Three Dial-in Pro fi le T ypes When you create a Dial-in User Pr o fi le as part of the server -side LAN Modem configuration process, you must select fr om among three Dial-in Pr o fi le T ypes to identify the type of client device that will dial in t[...]

Understanding the Three Dial-in Profile Types 97 Figure 53 Single User Dial-in fr om an Analog Modem Figure 54 Single User Dial-in fr om an Analog Router Using NA T LAN Modem Site to Site Dial-in The LAN Modem Site-to-Site Dial-in profile describes a scenario wher e a LAN Modems dials into another LAN Modem, where workstations on both sides of the[...]

98 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT This is because the called LAN Modem acts as the DNS server for workstations attached to the calling LAN Modem. An example of a LAN Modem Site-to-Site setup is shown in Figure 55. Figure 55 LAN Modem Site-to-Site Dial-in Pr ofile T ype Choose LAN Modem Site-to-Site when y[...]

Part I. Configuring the Server-side Dual 56K LAN Modem for Dial-in Support 99 Part I. Con fi guring the Server -side Dual 56K LAN Modem for Dial-in Support Configuring the server -side Dual 56K LAN Modem for dial-in support involves the following main steps: Before Y ou Start the Con fi guration Before you start the configuration, you should al[...]

100 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT 6 Click Submit. This completes the change to the Remote Administration account. Go on to “Configuring Dial-in Global Parameters.” Con fi guring Dial-in Global Parameters The Dial-in Global Parameters allow you to set dial-in prefer ences that will apply to all dial-[...]

Part I. Configuring the Server-side Dual 56K LAN Modem for Dial-in Support 101 5 If you are planning to use the Callback featur e, use the Callback Prefix field to enter the number requir ed to reach an outside line, such as a 9. Otherwise, leave this field blank. 6 In the LAN-to-LAN Site Number drop-down list box, designate the LAN Modem site f[...]

102 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Once the LAN Modem has changed its IP address, you will no longer be able to access the configuration screens through your Web browser until you re-start your workstation and allow it to acquire a new IP address from the LAN Modem’ s new subnet. 10 If you chose Site B [...]

Part I. Configuring the Server-side Dual 56K LAN Modem for Dial-in Support 103 The Dial-In W izard Pr ofile T ype Selection window appears, as shown in Figure 58. Figure 58 Dial-In Wizard Pr ofile T ype Selection Window 3 Select Single User from the dr op-down list, and then click Next.[...]

104 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT The Dial-In W izard Passwor d window appears, as shown in Figure 59. Figure 59 Dial-In Wizard Passwor d Window 4 Enter a unique Username and Password which the dial-in user must enter when calling in to this LAN Modem. This information will be entered in the Username and [...]

Part I. Configuring the Server-side Dual 56K LAN Modem for Dial-in Support 105 Figure 60 Dial-In Wizard Internet Service Pr ovider W indow 6 Select an Internet Service Provider for this dial-in user to use when accessing the Internet from the remote location. 7 Click Finish . This completes the server -side portion of the configuration pr ocess fo[...]

106 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Figure 61 Dial-In Wizard Pr ofile T ype Selection Window 3 Select LAN Modem Site-to-Site from the dr op-down list, and then click Next. The Dial-In W izard Passwor d window appears, as shown in Figure 62. Figure 62 Dial-In Wizard Passwor d Window 4 Enter a unique Usernam[...]

Part I. Configuring the Server-side Dual 56K LAN Modem for Dial-in Support 107 This information will be entered in the Username and Password fields when you configure a Private Network Service Provider profile in the second site LAN Modem. 5 Click Next. The Dial-In W izard Site Assignment window appears, as shown in Figur e 63. Figure 63 Dial-In[...]

108 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Figure 64 Dial-In Wizard Internet Service Pr ovider W indow 8 Select an Internet Service Provider for this dial-in user to use when accessing the Internet from the remote location. 9 Click Finish . This completes the server -side portion of the configuration for LAN Mode[...]

Part II. Configuring a Client Device for Dial-out Access 109 The Dial-In W izard Pr ofile T ype Selection window appears, as shown in Figure 65. Figure 65 Dial-In Wizard Pr ofile T ype Selection Window 3 Select Advanced from the dr op-down list, and then click Next. The password page appears. 4 Enter a unique Username and Password to identify and[...]

110 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Con fi guring a LAN Modem Using Single-User Dial-out Access T o configure a LAN Modem that will use the Single-User scenario to access a remote LAN Modem, you cr eate a Private Network Service Provider pr ofile much as you would for standard Private Network access. Y o[...]

Part II. Configuring a Client Device for Dial-out Access 111 configuration first will ensure that the LAN Modem occupies a subnet different from the LAN Modem into which it will be dialing. Creating a Private Network Service Provider Pr o fi le T o create a Private Network Service Pr ovider profile for dial-out access, have the following inform[...]

112 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Figure 66 Private Network Parameters Window 3 In the Name field, enter a name for this Service Provider , such as the location of the server -side LAN Modem. 4 In the Dial Out Prefix field, if applicable, enter the number r equired by your location to reach an outside [...]

Part II. Configuring a Client Device for Dial-out Access 113 6 In the Alternate drop-down list box, you can select Alternate and enter the second LAN Modem telephone number , to be dialed if the first number is unavailable. Or , if the server LAN Modem was set up to allow Multilink dial-in calls, select Multilink and enter the second telephone num[...]

114 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT 14 For Network Address T ranslation, your choice depends on the Dial-User Profile T ype that you selected for this LAN Modem, as follows: ■ If you are configuring this LAN Modem for Single-User LAN Modem using NA T , leave NA T enabled. ■ If you are configuring thi[...]

Configuring Dial-in User Parameters 115 Figure 67 Dial-in User Selection Scr een 2 Choose either New Dial-in User to create a new pr ofile, or choose an existing Dial-in User from the dr op-down list, and click Select . The Dial-in User Parameters screen opens, as shown in Figur e 68.[...]

116 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Figure 68 Dial-in Users Parameters Scr een 3 In the Name field, enter a unique name to designate this dial-in user . 4 In the Password field, enter a passwor d to verify access when this user dials into the LAN Modem. 5 In the T ype of Use field, select the scenario fo[...]

Configuring Dial-in User Parameters 117 7 In the ISP Selection field, select the service providers that this dial-in user can access. 8 In the Data Compression field, choose to have data compr ession active or inactive. By default compression is disabled. (In or der for compression to occur , the other end of the connection must also have compres[...]

118 C HAPTER 8: C ONFIGURING THE D UAL 56K LAN M ODEM FOR D IAL - IN S UPPORT Placing a Call from a Client-side LAN Modem Once you have created a service pr ovider profile on your client LAN Modem, you can place a call in one of three ways: 1 Use the client LAN Modem’ s Manual Call Control page to place a call manually . 2 Use the LAN Modem Desk[...]

9 P LACING , R ECEIVING AND D ISCONNECTING C ALLS This chapter covers the following main topics: ■ Using the LAN Modem Desktop Manager (W indows only) ■ Placing calls ■ Receiving calls ■ Disconnecting calls Using the LAN Modem Desktop Manager (Windows only) The LAN Modem Desktop Manager for W indows 95, 98, NT , and 2000 pr ovides direct ac[...]

120 C HAPTER 9: P LACING , R ECEIVING AND D ISCONNECTING C ALLS Placing a Call Automatically T o place a call using one of your four pre-defined service pr ovider profiles, simply launch the application. For example, if you have an ISP configured as one of your service providers, launching a W eb browser such as Netscape Navigator or Internet Ex[...]

Receiving Calls 121 Placing a Call Manually to a T emporary Service Provider Y ou can also manually place a call to a service provider that has not been previously configur ed, as long as that service provider issues IP addr esses dynamically to the calling party . T o place a call manually to a temporary location, follow these steps: This call pr[...]

122 C HAPTER 9: P LACING , R ECEIVING AND D ISCONNECTING C ALLS ■ Downloading the latest firmware. Refer to Chapter 10, “Downloading Firmware to Y our Dual 56K LAN Modem,” for instructions. ■ Reviewing Dual 56K LAN Modem statistics Refer to Chapter 10, “Reviewing Statistics,” for instructions. Auto Answer must be enabled for your LAN M[...]

Disconnecting Calls 123 Disconnecting Calls Automatically Using Timers Disconnect timers are set via the Data Call Parameters window . Specifically , you can set the following parameters: Minimum Call Duration Enter the minimum length of a call that must be reached befor e the Dual 56K LAN Modem detects inactivity on the connection and then starts[...]

124 C HAPTER 9: P LACING , R ECEIVING AND D ISCONNECTING C ALLS[...]

10 T ROUBLESHOOTING AND M AINTENANCE This chapter explains how to isolate and solve problems encounter ed with the Dual 56K LAN Modem, such as problems caused by incorr ect settings or improper installation. Basic maintenance information for the Dual 56K LAN Modem is also provided. The following main topics are cover ed in this chapter: ■ Checkin[...]

126 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE Monitoring the Alert LED Power cycle the Dual 56K LAN Modem and observe the Alert LED. During the power -up self-test, the Alert LED will r emain lit. ■ If the Alert LED goes off, the test has been successful. ■ If the Alert LED flashes for more than several seconds, it means the LAN Modem is [...]

Evaluating Symptoms and Solutions 127 Incompatible IP address on your computer Reset the IP address on your computer, as follows: Windows 95 and 98: 1 Run winipcfg.exe. 2 Select the Ethernet adapter connected to the Dual 56K LAN Modem. 3 Click Release All and then Renew All . Windows 2000 and NT 4.0: 1 Run ipconfig /release and then ipconfig /renew[...]

128 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE Clicking Submit in the LAN Modem’s configuration pages does not take you to the next screen JavaScript may not be enabled in your Web browser. Enable JavaScript in your Web browser Refer to your browser’s documentation for information . Sending SMTP mail is slow. Only one workstation to one ser[...]

Evaluating Symptoms and Solutions 129 You are using only one telephone line with the LAN modem, and it is connected to the Line 2 port. If you are only using one telephone line with your LAN Modem, it must be connected to Line 1. In this case, make sure that you connect the telephone line to the port labeled “Line 1” on the LAN Modem’s back p[...]

130 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE (continued) LAN Modem is not answering Dial-in data calls Auto Answer is set to Disable . Auto Answer must be enabled for the LAN Modem to answer incoming data calls. By default Auto Answer is disabled. Refer to “Configuring Dial-in User Parameters” for more information. Browser is not displayi[...]

Finding More Information 131 Finding More Information For more information about the Dual 56K LAN Modem, such as Fr equently Asked Questions and specific technical notes, go to the following URL, http://www.3com.com/support/docs/lanmodem and bookmark this site for quick and easy access. Contacting T echnical Support Contact your Network Supplier o[...]

132 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE The Dual 56K LAN Modem reinitializes itself, and goes back to its factory default settings. All user -enter ed information has been erased. ■ Restart your computer . ■ Launch your Web br owser . Reviewing Statistics V arious statistics about LAN and W AN parameters ar e stored and available for[...]

Reviewing Statistics 133 Understanding Current Call Information The current call statistics ar e described in T able 8. Understanding Last Call Information The last call statistics are described in T able 9. These values are cleared each time the LAN Modem is reset or power cycled. T able 8 Current Call Statistics Description Current Call Informati[...]

134 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE Understanding Last 10 Calls Information The last 10 calls statistics are described in T able 10. These values are cleared each time the LAN Modem is reset or power cycled. Understanding Service Providers Information The Service Provider statistics described in T able 11 are provided after a call ha[...]

Synchronizing the LAN Modem Clock 135 the LAN Modem. Y ou can manually synchronize this internal clock to match the date and time of another attached workstation. T o update the LAN Modem’ s Real Time clock: 1 From the LAN Modem Main Configuration Page, click the Advanced button. 2 Click the Maintenance button. 3 Click the Update LAN Modem’ s [...]

136 C HAPTER 10: T ROUBLESHOOTING AND M AINTENANCE[...]

A N ETWORKING P RIMER This chapter provides a description of basic networking concepts and modem terminology to help you better understand the key functionality of the Dual 56K LAN Modem. What is a network? A network is a set of computers and other devices, such as printers, servers, hubs, and modems, that are connected together either dir ectly th[...]

138 A PPENDIX A: N ETWORKING P RIMER Figure 69 Example of a LAN What is a W AN? A W AN (W ide Area Network), often r eferred to as “the W AN,” is that portion of a network which involves use of the pre-existing public telephone network and network infrastructures, such as the public Internet, or long-distance carrier services such as DSL or cab[...]

What is a network? 139 What is a POTS connection? POTS stands for “Plain Old T elephone Service” and refers to a basic, analog telephone connection without any added features or functions. A POTS line is used to connect analog devices, such as a telephone, fax machine, or your Dual 56K LAN Modem, to the public telephone network. How do differ e[...]

140 A PPENDIX A: N ETWORKING P RIMER What is an IP Address? An IP address is a numeric value of a set form—32 bits , or binary digits of either one or zero —which is used within a TCP/IP network to uniquely identify the location of every device within the network for purposes of routing data. Each bit is in actuality a digital signal repr esent[...]

What is a network? 141 reserved for other purposes). By contrast, a Class A network’ s IP address allocates eight bits for the network number and 24 bits for the local address, allowing for a possible combination of 16,777,214 (2 24 -2) local addresses. T o return to the postal analogy , just as a street addr ess refers to the set location or res[...]

142 A PPENDIX A: N ETWORKING P RIMER A private organization’ s internal router uses this new breakdown of (longer) network number and (shorter) host number to route data to subdivided ar eas, or subnets, within the broader “network” (as identified by the original network number). The temporary , longer network number identifies the subnet w[...]

What is a network? 143 If your LAN will not connect to the public Internet, you can set up your own unique (that is, private) IP address numbering. IP addr esses for private networks such as an office LAN must also be unique but only within that LAN. What is DHCP? Dynamic Host Configuration Protocol is a pr ocess that automatically assigns a uniq[...]

144 A PPENDIX A: N ETWORKING P RIMER throughput. On the LAN side, computers on a typical network can communicate with each other at up to 10 Mbps. When dialing up to a long distance location using 56K, you can establish a network connection speed of up to 56 Kbps without compression or up to 115.2 Kbps with compr ession. If you are dialing into the[...]

What is a network? 145 connected ISP . By bypassing the analog-to-digital conversion in the downstream path, 56K technology can use nearly all of the available 64K network bandwidth. (Upstream data, typically less sensitive, travels at the standar d V .34 rate of 33.6K.) Based on “encoding” rather than “modulation”, the result is download s[...]

146 A PPENDIX A: N ETWORKING P RIMER[...]

B I NSTALLING AND U SING THE V IRTUAL FAX M ODEM This appendix describes the installation of the Virtual F AX Modem application (included on the OfficeConnect Dual 56K LAN Modem Companion Programs CD-ROM) for use with your Dual 56K LAN Modem. The Virtual F AX Modem application allows Windows 95, 98, NT 4.0, and 2000 users to use the LAN Modem as i[...]

148 A PPENDIX B: I NSTALLING AND U SING THE V IRTUAL FAX M ODEM After your computer has been rebooted, the Virtual Fax Modem icon will be placed in the lower right corner of the W indows desktop. The Presets field located in the V irtual Fax Modem application has been pre-selected for use with the LAN Modem and should be left set to its default va[...]

Installing the Virtual FAX Modem 149 Con fi guring the LAN Modem for use with the Virtual Fax Modem Once you have installed the Virtual Fax Modem application and the LAN Modem COM port driver , you can further define the manner in which the Virtual Fax Modem interacts with the LAN Modem. This is done via the Virtual Fax Modem Parameters page. T o[...]

150 A PPENDIX B: I NSTALLING AND U SING THE V IRTUAL FAX M ODEM ■ T elephone Line: This field is used to assign the phone line to be used by the Virtual Fax Modem. By default, this field is set to Any , permitting the use of the first available line. T o always use telephone line 1 choose One. T o always use telephone line 2 choose T wo. 4 Cli[...]

C C REATING A V IRTUAL P RIVATE N ETWORK (VPN) T UNNEL This appendix tells you how to create a VPN tunnel fr om a client workstation, using the appropriate client softwar e. Creating a Virtual Private Network (VPN) T unnel The Dual 56K LAN Modem’ s support of the PPTP protocol allows you to establish a Virtual Private Network tunnel between a wor[...]

152 A PPENDIX C: C REATING A V IRTUAL P RIVATE N ETWORK (VPN) T UNNEL Initiating the VPN T unnel Once the PPTP tunnel server has been set up at the private network and all client workstations that will use a VPN tunnel have been set up with client software, each user simply initiates a tunnel from his or her workstation. Because the steps for initi[...]

D F ACTORY D EFAULTS This appendix lists the factory default settings of the Dual 56K LAN Modem. Dual 56K LAN Modem Factory Defaults Refer to T able 12 for the Dual 56K LAN Modem factory defaults. T able 12 Dual 56K LAN Modem Factory Defaults LAN Parameters LAN Modem IP Address 192.168.1.1 Subnet Mask 255.255.255.224 DHCP Server Enabled NetBIOS Fil[...]

154 A PPENDIX D: F ACTORY D EFAULTS[...]

E S PECIFICATIONS This appendix describes the specifications of the Dual 56K LAN Modem. ■ Y ear 2000 Compliance Speci fi cations Refer to T able 13 for the Dual 56K LAN Modem specifications. Y ear 2000 Compliance The OfficeConnect LAN Modem is Y ear 2000 compliant. Specifically , its system clock is capable of accepting and storing dates inc[...]

156 A PPENDIX E: S PECIFICATIONS[...]

G LOSSARY analog signals A variety of signals and wavelengths that can be transmitted over communications lines. An example is a voice call over the phone line. BACP/BAP Bandwidth Allocation Control Pr otocol (BACP) and Bandwidth Allocation Protocol (BAP) are used in conjunction with the Multilink PPP featur e. When Multilink PPP is negotiated, the[...]

158 G LOSSARY PPP calls to improve data transfer times using a compr ession method called hi/fn LZS. DBA Dynamic Bandwidth Allocation. DBA is a method of reallocating bandwidth (such as a second modem channel) automatically . DBA allows you to place a voice call while a Multilink PPP call is active. default V alue set at the factory . DHCP Dynamic [...]

G LOSSARY 159 Modem’ s two 56K lines, Multilink PPP is used to combine these two 56K connections into a virtual, single 112K connection. NetBIOS fi ltering NetBIOS filtering is a LAN Modem feature that helps pr event the LAN Modem from establishing unwanted calls. This featur e filters the DNS requests made by NetBIOS that inadvertently cause [...]

160 G LOSSARY V .34 An ITU standard that currently allows data rates as high as 28,800 bps. V .34+ An enhancement to V .34 that enables transfer rates as high as 33, 600 bps. V .90 V .90 is the ITU standard which allows modems to r eceive data at up to 56Kbps over the standard, public switched telephone network (PSTN). V .90 technology exploits the[...]

3Com Corporation L IMITED L IFETIME W ARRANTY Of fi ceConnect Dual 56K LAN Modem H ARDWARE 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 s[...]

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 repl[...]

R EGULATORY AND A PROVAL I NFORMATION E UROPEAN U NION This device complies with the requirements of European Directive 1995/5/EC. IC (I NDUSTRY C ANADA ) ■ Equipment Jack: CA-11A This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of Industry Can[...]

ii. Caller identification information (which occurs between the first and second ring cadence) is not destroyed. This equipment does not meet Telecom’s impedance requirements. Performance limitations may occur when used in conjunction with some parts of the network. Telecom will accept no responsibility should difficulties arise in such circumsta[...]

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[...]

[...]

167 A Advanced Dial-in explained 98 Alert LED 126 , 128 analog equipment installation 44 Auto Answer configuring 101 B back panel description 17 BACP/BAP defined 27 C call routing among service providers 120 Callback explained 23 CD LED 129 Challenge Handshake Authentication Protocol (CHAP) 19 changing data call parameters 85 your password 71 , 8[...]

168 V Virtual Fax Modem explained 28 virtual fax modem configuring LAN Modem 149 installing 147 installing COM Port driver 148 terminating calls 150 virtual private network using with Windows 152 virtual private network (VPN) creating 151 virtual private networks explained 29 W warranty 20 , 161 Web site LAN Modem Support 52 WebWizard 53 WINS serv[...]