ISDNLink INET-800 ISDN Router User s Guide

Transcription

1 ISDNLink INET-800 ISDN Router User s Guide

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3 FCC Statement: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation. CE Marking Warning This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. Copyright All Rights Reserved. Document Version: 1.0 All trademarks and trade names are the properties of their respective owners.

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5 TABLE OF CONTENTS CHAPTER 1 ABOUT YOUR INTERNET ROUTER... 1 Internet Router Features... 1 Requirements... 4 Package Contents... 4 LED Indicators... 5 Rear Panel Connectors & Switches... 5 DIP Switches... 6 Reset The Device.6 CHAPTER 2 SETUP: INTERNET ROUTER... 7 Overview... 7 Hardware Installation... 7 Internet Router Configuration... 8 Web Browser Configuration... 8 Home Setup Screen...11 Configuration Utility...15 Quick Setup Screen..17 Status Screen.21 Password Screen...25 LAN Screen...27 Dial-In Access Screen...30 Access Control Screen..34 Internet Application Screen 39 LAN-to-LAN Screen 46 ISDN Screen.50 CHAPTER 3 PC CONFIGURATION..55 PC Configuration.55 Operation - Internet Access 56 CHAPTER 4 ADVANCED FEATURES...59 Available Options...59 i

6 CHAPTER 5 ROUTING Overview Router Configuration...61 Routing Example...62 Routing Table Entries..64 ii

7 About Internet Router CHAPTER 6 STATUS & MONITORING...67 Overview...67 Status Screen...67 APPENDIX A TROUBLESHOOTING APPENDIX B SPECIFICATIONS...73 iii

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9 Chapter 1 About Internet Router 1 This Chapter provides an overview of the Internet Router's features and capabilities. The Internet Router allows multiple SOHO (Small Office Home Office) users to share a single Internet user account (IP address) over an ISDN phone link. It provides a low-cost method of giving users of your network easy access to the vast resources available on the Internet. Internet Router Features Figure 1: Office to Internet The Internet Router incorporates many advanced features, carefully designed to provide sophisticated functions while being easy to use. LAN Features 10/100 BaseT Support. The LAN connection will auto-detect 10BaseT and 100BaseT connections DHCP Server Support. Dynamic Host Configuration Protocol provides a dynamic IP address to PCs and other devices upon request. The Internet Router can act as a DHCP Server. 1

10 Internet Router User Guide Multi Segment LAN Support. If you have a Router, PCs on other LAN segments can use the ISDN Internet Router to access the Internet. A static routing table is provided to support multiple routers if needed. Internet Access Features Shared Internet Account. All users on the LAN can share the same Internet Account (IP address). Dial-On-Demand & Auto-Disconnect. A connection is established to the Internet as required, and automatically disconnected when no longer needed. This reduces on-line charges to the minimum possible level. PPP Authentication. This is used to validate the log-on to your Internet Service Provider. Advanced Internet Functions. Virtual Servers. This feature allows Internet users to access Internet servers on your LAN. The required setup is quick and easy. User-Defined Virtual Servers. Internet users can access non-standard Internet Servers on your LAN by using this feature. Special Internet Applications. Internet applications such as Internet Videoconferencing, Telephony, Games Servers, and other specialpurpose Servers are supported. Exposed Computer. One (1) PC on your local LAN can be exposed to the Internet. This allows unrestricted 2-way communication between this PC and servers or users on the Internet. ISDN Features Easy Configuration. No complex technical data or unintelligible prompts. You ll be finished in minutes! Intelligent B Channel Utilization. Internet access will automatically switch between 1 or 2 B channels, depending on the volume of data. Outgoing call ID. The Internet Router supports Outgoing call ID for both MSN (Multiple Subscriber Numbering) and SAD (Sub Address). 2

11 About Internet Router Configuration & Management Easy Setup. Use your WEB browser from anywhere on the LAN for configuration. Remote Management. The Internet Router can be managed, if required, from a workstation anywhere on the LAN, using a WEB browser. A friendly utility in MS Windows does the advance setup to achieve functions and performance. Remote Monitoring. Internet access via the ISDN link, can be monitored from any workstation on the LAN. Advanced Functions Dial-in Remote Access. Remote users can dial in using their ISDN phone line, and use the ISDN Internet Router to connect to the LAN and access LAN resources.. LAN-to-LAN Connectivity. Using 2 ISDN Internet Routers, 2 LANs can be connected via the ISDN link. The ISDN Internet Router will dial the remote LAN whenever required. Operation is completely automatic and transparent. Security Features Configuration Data. Optional password protection is provided to prevent unauthorized users from modifying the configuration. Firewall Protection. All incoming data packets are monitored and all incoming server requests are filtered, thus protecting your network from malicious attacks from external sources. Firewall Protection The firewall protection provided by the Internet Router is an intrinsic side effect of IP sharing. All users on the LAN share a single external IP address. From the external viewpoint, there is no network, only a single device. 3

12 Internet Router User Guide For internal users, the Internet Router acts as a transparent proxy server, translating the multiple internal IP addresses into a single external IP address. For external requests, any attempt to connect to local resources are blocked. The Internet Router will not reverse translate from a global IP address to a local IP address. This type of natural firewall provides an impregnable barrier against malicious attacks. Requirements PCs with Ethernet Network cards and 10/100 BaseT connectors 10/100 BaseT network ISDN line, fitted with a NT-1 (Network Termination 1) termination and RJ45 sockets for S/T connection. Internet Access account with a local ISP (Internet Service Provider). Package Contents The following items should be included: The Internet Router Unit. Power Adapter. One (1) 1.44M floppy disk or CD, containing the configuration utility. Quick User s Manual. ISDN cable If any of the above items are damaged or missing, please contact your dealer as soon as possible. 4

13 About Internet Router LED Indicators A Power Lights when power is ON. B LAN LNK ON when a LAN connection is established. Flash while data traffic is on the LAN. ERR Indicates an error, but normally lights up briefly during power On. LAN ON when a LAN connection is established. C ISDN B1 ON when a B1 channel is established. Flash while the B1 channel is in use. B2 ON when a B2 channel is established. Flash while the B2 channel is in use. LK ON while the ISDN control signal is established. All 7 LEDs will light briefly on power on. This is normal. Rear Panel Connectors & Switches 1 Power port Connect the power adapter here. Use only the unit provided. (12VDC, 1Amp) 2 10/100BaseT ports Connect 10/100 BaseT cabling here, and the other end to the PC. 3 DIP switches See the following section. 4 ISDN port Use a cable with RJ45 connectors to link this port to the S/T interface on the NT-1. 5

14 Internet Router User Guide DIP Switches Settings SW1 SW2 SW3 SW4 SW5 Description Off Off Normal operation Off On Disable DHCP server 2 On Off Restore defaults IP address 3 On On Reserved 1 ISDN Terminator ISDN Terminator Reserved 1 Do not change the default values unless advised to do so by technical support staff. 2 This will override the setting on the DHCP Server screen. 3 Restores the default IP address ( ), network mask ( ) and clears the password, provided the following procedure is carried out. If you merely leave the DIP switches is this position, the Internet Router will function normally. ISDN Terminators: Please leave them as default. Reset the device If the Internet Router's IP Address or password is lost, the following procedure can be used to recover from this situation. 1. Turn the power to the Internet Router OFF. 2. Set DIP switch 1 ON, and DIP switch 2 OFF. 3. Turn the power to the Internet Router ON. 4. Operate DIP switch 1 in the following sequence (you have 15 seconds to complete the sequence): OFF, ON, OFF 5. The Internet Router will now reset, and the Red LED will flash. The following changes will have been made. (Other configuration data is unchanged.) IP Address set to its default value of Network Mask set to The password cleared (no password). 6

15 About Internet Router 6. You can now connect to the Internet Router and make any configuration change required. 7

16 Chapter 2 Setup: Internet Router 2 This Chapter explains how to install and configure the Internet Router for Internet Access. Overview Setup involves: Hardware Installation Internet Router configuration PC configuration Hardware Installation 1. Connect Network Cables Use standard UTP network cable, with RJ45 connectors, to connect the ISDN Internet Router to a 10BaseT or 100BaseT hub. The ISDN Internet Router will auto-detect the network speed (10M or 100M) and full/half duplex mode. 2. Connect ISDN Phone Line Using a cable fitted with RJ45 plugs, connect the ISDN port on the Internet Router to the S/T interface on the ISDN NT-1 (Network Termination 1). 3. Power On and Check the LEDs Connect the supplied power adapter to the Internet Router. When the Internet Router is powered On, all LEDs should blink, then, except for the PWR LED, go off. If LAN and ISDN connection is working fine, the LNK and LK leds will stay ON. 8

17 Setup: Internet Router If the ERR LED stays on, or both the ERR and LNK LEDs continue to blink, there is a hardware problem. Warning! Only use the power adapter provided. Using a different one may cause hardware damage. Internet Router Configuration There are two methods to configure the Internet Router, one is using web browser and the other is using utility working in Win95/98/NT. The browser configuration provides a quick start configuration (only one screen) and an extra utility provides more powerful configuration for users. But first of all, please make sure that the default IP address, is used by Internet Router ONLY at the first stage until you change it to another one after configuration. Web Browser Configuration Preparation Ensure Internet Router is in the LAN, your PC is using the TCP/IP protocol, and configure PC to use the Internet Router s DHCP server, as fo llows: DHCP Client Setup - Windows 95/98 and use Internet Router DHCP server 1. Select the Network Neighborhood icon on the desktop, then Properties. You will see a screen like the one below: (Start - Settings - Control Panel Network) 9

18 Internet Router User Guide Figure 2: Network Configuration tab 2. If a line like the one highlighted ("TCP/IP -> Network Card ) is not listed, select Add-Protocol-Microsoft-TCP/IP-OK to add it. 3. Select Properties for the TCP/IP -> Network card entry. You will see a screen like the following: Figure 3: TCP/IP Properties 4. On the IP Address tab, click the radio button for Obtain an IP address automatically, as above, then reboot. Your PC will obtain an IP Address from the Internet Router. If you do not want to use the DCHP Server in Internet Router: You may set DIP switch 2 ON to disable the DHCP server in the Internet Router or leave it as Default (DHCP ON). Enter a fixed IP Address on your PC, as shown below. Please make sure it does not conflict with other PCs in the same LAN environment. 10

19 Setup: Internet Router Figure 4: TCP/IP Properties Fixed IP Address Connecting to the Internet Router 1. Start your WEB browser 2. In the Address box, enter " and the IP Address of the Internet Router. For example (using default IP Address): 3. You will see the Home setup screen and detailed description below. If you can't connect, check: The Internet Router is properly installed, LAN connections are OK, and it is powered ON. Your PC and the Internet Router are on the same network segment. (If there is no router, this must be the case.) If another PC or device is using the same IP address ( ) as the Internet Router, turn the other device OFF until you assign a new address to the Internet Router. That your PC has a compatible IP address (either static or obtained as a DHCP client) In the Windows 95/98/NT Run dialog, enter: winipcfg Ensure that the drop-down list is set to your Network card. The current IP Address and Network mask (Subnet Mask) will be dis- 11

20 Internet Router User Guide played. The IP address must be in the range to , and the Network mask must be Ensure that your PC is NOT configured to use a Proxy Server. In Internet Explorer, this can be checked using View Internet Options - Connection. In Netscape, check Options Network Preferences Proxies. 12

21 Setup: Internet Router Home Setup Screen Figure 5: Home Setup Screen 13

22 Internet Router User Guide Internet Access Account Details Account (User) Name Account Password Verify Password IP Address provided by ISP DNS IP Address Telephone Enter the account name provided by your ISP. This name will be used to log in to the ISP s server. Enter the current password for the above account. Re-enter the password to ensure it is correct. Enter the IP address assigned to you by your ISP. If the ISP issues dynamic IP addresses, leave this field as (With dynamic IP addresses, a valid address is provided upon connection.) The DNS (Domain Name Server) translates names (e.g. microsoft.com) to IP Addresses. Enter the DNS IP address supplied or recommended by your ISP. Enter the telephone number used to connect to your ISP. ISDN Details Country SPID (1 st B Channel) Select your country from the drop-down list. Note that there are 5 entries for the USA. If in the USA, select the entry to match the Switch Type used by your telephone company. If you live in the USA, enter the SPID (Service Profile Identifier) provided by your phone company. The most common format for the SPID is 10 digits (area code + local number) for the phone number, followed by 4 digits for the device ID. e.g

23 Setup: Internet Router Where is the phone number, and 0101 is the device ID. However, there is wide variation in SPID formats, and you must use the method advised by your phone company. If your telephone company did not provide this information, leave this blank. SPDI (2 nd B Channel) Enter the SPID for the 2 nd B Channel. (See above) LAN Settings We recommend that you use the DHCP server function in the Internet Router. If you wish to use the built-in DHCP server: No changes are required. However, all devices on your LAN must either be a DHCP Client OR use a compatible IP Address and Network mask. If your LAN already has a DHCP server: Set DIP switch 2 ON to disable the DHCP server in the Internet Router Give the Internet Router an IP address compatible with the addresses allocated by the DHCP server. (i.e. the last 3-digit number is NOT within the addresses allocated by the DHCP server; the other numbers are the same as the addresses allocated by the DHCP server.) The Network Mask must be the same as the value used by the DHCP server. If you wish to use static (fixed) IP Addresses: Give the Internet Router an IP Address within the same address range as PCs on your LAN. (Only the last 3-digit number should be different for each device.) The IP Sharer s Network Mask must be the same value as PCs on your LAN. If you want to change the Internet Router IP address, please read following statements carefully. 15

24 Internet Router User Guide Give an IP address to the Internet Router and network mask. Click the Save button and then the Internet Router device IP address is changed to your setting. At this time, your PC may be not in the same network mask as Internet Router if you change it to another segment. You need to re-configure your PC to the same segment as Internet Router. Then you can access Internet Router again. If you forget the IP address, network mask, or password of Internet Router, please refer the RESET THE DEVICE section in Chapter 1 for more information. 16

25 Setup: Internet Router Configuration Utility The following procedure assumes you have a Windows 95/98/NT 4.0 or later system available. The supplied Windows utility provides a quick and easy way to make your ISDN Internet Router operational. Normally, only 1 screen (Quick Setup) must be configured to make the ISDN Internet Router operational. Other setup is required only for the following situations: Your LAN has a Router or an existing DHCP Server. The default IP Address range is not suitable for your situation. The default values for the ISDN link do not suit your installation. You wish to use a password to protect the configuration data. You wish to take advantage of some of the advanced features of the ISDN Internet Router. Preparation 1. Insert the supplied CD-ROM into your drive. 2. If the Setup program does not start automatically, run SETUP.EXE in the root directory. 3. Follow the prompts to complete the installation. Using the Windows Utility 1. Start the program. If using the default installation, use Start Menu - Programs - ISDNLink Router Utility ISDNLink Router Utility. 2. The first screen will list all compatible ISDN Internet Routers. Select the desired unit, then click the Setup button if ISDN Internet Router and PC are in the same network mask. 17

26 Internet Router User Guide Figure 6: ISDN router configuration utility 3. If the selected device has an IP Address which is incompatible with your PC, you will see the following TCP/IP Settings screen. Figure 7: TCP/IP Settings The screen will display suggested values, rather than current values. Change the suggested values only if you know they will not work (for example, the IP Address is already allocated to a PC which is powered off). Otherwise, click "No Change" to continue. 4. If a password has been set for the ISDN Internet Router, you will be prompted for the password, as shown below. (If no password has been set, you will not see this dialog box.) 18

27 Setup: Internet Router Figure 8: Password Dialog Leave the "User Name" blank, and enter the password you assigned to the ISDN Internet Router. 5. Configure the Quick Setup tab as described below. Quick Setup Screen The Quick Setup tab is displayed by default. You will see a screen like the example below. 19

28 Internet Router User Guide Data - Setup Screen Figure 9: Quick Setup Screen Internet Access Account Details (from ISP) Account (User) Name Enter the account name provided by your ISP (Internet Service Provider). This name will be used to log in to the ISP's server. 20

29 Setup: Internet Router Account Password Enter the current password for the above account. Verify Password Re-enter the password to ensure it is correct. IP Address provided by ISP Enter the IP address assigned to you by your ISP. If the ISP issues dynamic IP addresses, leave this field as (With dynamic IP addresses, a valid address is provided upon connection.) Idle Time-out If there is no data traffic in the ISDN line in setting value, internet router will disconnect ISDN connection automatically to save money. DNS IP Address The DNS (Domain Name Server) translates names (e.g. microsoft.com) to IP Addresses. Enter the DNS IP address supplied or recommended by your ISP. Telephone Enter the telephone number used to connect to your ISP. Telephone (2) & (3) Optional. Enter the telephone number to try if the first number is busy. ISDN Details (from Telephone Company) Country Select your country from the drop-down list. Note that there are 5 entries for the USA. If in the USA, select the entry to match the "Switch Type" used by your telephone company. SPID (1 st B Channel) If you live in the USA, enter the SPID (Service Profile Identifier) provided by your phone company. 21

30 Internet Router User Guide The most common format for the SPID is 10 digits (area code + local number) for the phone number, followed by 4 digits for the device ID. e.g Where is the phone number, and 0101 is the device ID. However, there is wide variation in SPID formats, and you must use the method advised by your phone company. If your telephone company did not provide this information, leave this blank. SPID (2 nd B Channel) Enter the SPID for the 2 nd B Channel. (See above) LAN Settings The TCP/IP settings displayed on the screen are read-only. Once setup is complete: Restart the ISDN Internet Router by disconnecting and reconnecting the power. Refer to the next document (LAN/PC Setup) for details on setting up each PC, including the one used for configuration. Other Setup Except in the following circumstances, no other configuration is required. 22

31 Setup: Internet Router If using an existing DHCP Server: Configure it to provide the ISDN Internet Router's IP Address as the Default Gateway. The DHCP Server in the ISDN Internet Router should be disabled. This setting is on the LAN Tab of the Manager utility. ISDN Router's DHCP Server Settings unsuitable If your LAN already has some devices using fixed IP Addresses, you need to set the IP Address range used by the DHCP Server to be compatible. The DHCP Server settings are on the LAN Tab of the Manager utility. Your LAN has a Router The Routing feature can be completely ignored if you do not have a router in your LAN. If you DO have a router, it is necessary to configure BOTH the Router and the Routing table in the ISDN Internet Router correctly. See Routing for details. Default ISDN Settings unsuitable In rare cases, it may be necessary to change the ISDN settings (B Channel Speed, Initialization string). These settings are on the ISDN Tab screen. This screen also allows you to: Temporarily switch the ISDN link OFF. Use 2 B Channels for Internet access, rather than 1. Set the outgoing call MSN and SAD. (MSN and SAD allow you to have multiple phone numbers). Once setup is complete: Restart the ISDN Internet Router by disconnecting and reconnecting the power. Refer to the next document (LAN/PC Setup) for details on setting up each PC, including the one used for configuration. 23

32 Internet Router User Guide Status Screen The Status tab on the Windows utility can be used to review the current settings and operation of the ISDN Internet Router. An example screen is shown below. 24 Figure 10: Status Screen

33 Setup: Internet Router Data - Status Screen System Firmware Version Hardware Address Hardware ID Version of the firmware (embedded software) which is currently installed. Technical support staff may ask for this information. The Network Address (hardware address) of this device. This is equivalent to the "Network Adapter Address" on a PC. The hardware ID of this device, used by the manufacturer for identification. ISDN Connection Idle/Dial-in/LAN-to- LAN Name Indicates what the ISDN link is being used for. If not being used, "Idle" will be displayed. Dial-in use:- The name of the user performing dial-in. Internet access:- The account name. LAN-to-LAN connections:- The login name. The login name could be either accepted or provided, depending which end initiates the connection. Connection Log Log This shows status messages relating to ISDN link. Common messages are shown in the following table. 25

34 Internet Router User Guide Connection Log Messages Message Description Dialing Dialing the ISP Try to establish physical connection. The device is trying to connect with the ISP. Busy error The number dialed was busy. Physical line is connected Physical connection to ISP has been established. Start PPP A PPP connection is now being established. PPP up fail The PPP connection could not be established. PPP up successfully The PPP connection was established successfully. Stop PPP The PPP connection was terminated. This will occur at the end of a session, or an error condition. Idle timer expires The "Idle time-out" has been triggered. (There was no data sent or received for the duration of the "Idle time" period.) 26

35 Password Screen The password protects the ISDN Internet Router's configuration data. If a password is not set, anyone can connect to the ISDN Internet Router and change its configuration. If the password is lost, a DIP switch setting is provided to clear the password. Refer the RESET THE DEVICE for more information. Selecting the Password tab will reveal a screen like the example below. Figure 11: Password Screen 27

36 Internet Router User Guide Enter the password on this screen: Passwords are case sensitive and can be up to 8 alphanumeric characters (no spaces or punctuation). To create or change the password, enter the required password in both the New Password and Verify Password input fields. 28

37 LAN Screen Unless your LAN has a Router, it is usually unnecessary to change the settings on this screen. An example screen is shown below. This screen has 3 sections relating to the LAN on which the ISDN Internet Router is installed. DHCP Server Routing Table DNS (Domain Name Server) IP Addresses Figure 12: LAN Screen 29

38 Internet Router User Guide DHCP Server A DHCP (Dynamic Host Configuration Protocol) server provides a valid IP address, Gateway address and DNS addresses to a DHCP client (PC or device) upon request. The ISDN Internet Router can act as a DHCP Server. The default value is ON (Enabled), and use of this feature is strongly recommended. To use this feature, ensure that Enable is checked. Also, the PCs must be configured to act as a DHCP clients. See above DHCP Client Setup section of Web Browser Configuration for details of this procedure. IP Address allocated by the DHCP Server Normally, the default values for the DHCP Server do not need to be changed. However, if your LAN already has some devices using fixed IP Addresses, you must ensure that each of those devices uses an IP Address which is compatible with the IP Addresses allocated by the DHCP Server. "Compatible" means: o o o The IP Address is from the same address range as the DHCP Server. By default, the ISDN Internet Router uses the IP Address range to The IP Address must NOT be within the group allocated by the DHCP Server. By default, the ISDN Internet Router allocates addresses between to Therefore, addresses between and are available for other devices. All devices must use the same Network Mask (Subnet Mask). If you have non-pc devices on your LAN, it may be more convenient to change the IP Addresses allocated by the DHCP Server function in the ISDN Internet Router, rather than change the IP Addresses used by the existing devices. To do this: 30

39 Setup: Internet Router Routing Table 1. For the Start IP Address, enter the first IP Address of the range of IP Addresses to be allocated by the DHCP Server. 2. In the End IP Address, enter the last IP Address of the range of IP Addresses to be allocated by the DHCP Server function. 3. Ensure that the range is large enough for all of the PCs and devices which will be acting as DHCP clients and requesting an IP Address. The default number of clients is 50; the maximum is 253. This is a static Routing Table. Entries are required only if your LAN contains 1 or more Routers. See Chapter Routing for further details. If you are using the ISDN Internet Router for LAN-to-LAN connectivity, an entry will automatically appear here for the remote LAN you are connecting to. Do NOT delete this entry. DNS (Domain Name Server) IP Address Space is provided for 3 entries. The first entry will display the DNS value entered on the Quick Setup screen. Enter additional values if you wish. If multiple entries are provided, the first available DNS will be used. 31

40 Dial-In Access Screen The ISDN Internet Router's dial-in feature allows remote users to: Use an ISDN TA to connect to the ISDN Internet Router, using the same PPP communication software (e.g. Dial-up Networking) that they use for dial-in Internet access. Have their user name and password verified by the ISDN Internet Router. (Note: If dial-in PPP link security is set to "None", no verification is performed.) Access the LAN resources as if they were a local user. To other users on the LAN, the remote users appear to be a local PC, using the IP Address allocated by the ISDN Internet Router. For additional security, the dial-back function can be used. In this situation, the ISDN Internet Router will hang-up the user's incoming connection, and then call them back. To use the Dial-in Feature: 1. Dial-in must be Enabled on the Dial-in Tab. 2. User access data is required. The options are as follows: o o o Allow access by anyone and everyone (not recommended) - If Authentication on the Dial-in screen is set to None, then the user name and password is not checked, so anyone who dials in can gain access. All users use the same log-in - Create a single user (on the Dialin screen) with dial-in access, and all users use this log-in. Enter data for each user - Each person requiring dial-in access has their data entered on the Users screen. 3. The remote user can use the same dial-up software they use for Internet access. Once connected, the remote user can access LAN resources as they normally would. They will appear to other LAN devices as a normal PC on the LAN, using the IP Address allocated by the ISDN Internet Router. 32

41 Setup: Internet Router Data - Dial-in Access Dial-in Access Figure 13: Dial-In Screen Enable Dial-in Access Idle Time-out If checked, dial-in will be allowed. Otherwise, any attempt to dial-in will be blocked. If a dial-in connection remains inactive, it is terminated after this time period. Allowable range is 0-99 minutes; 0 means no 33

42 Internet Router User Guide limit. Authentication Select the desired security option for log-in: Disable means no user name/password check is performed. Anyone can connect. It is not necessary to enter each user's details if this option is chosen. Warning! This is a major security risk. Enable uses the industry-standard PAP system. User List Entering of user data is required only to provide secure dial-in access. All users who have been created will be listed here. The Dial-in column indicates whether or not each user currently has Dialin access. Click any entry in this column to Enable/Disable dial-in access. The user "Guest" is pre-defined, with no password or Dial-in access. This name will initially appear in the list. Note the limitations on user names: o o o Multiple words are NOT allowed. Punctuation and special characters must NOT be used. User names are case insensitive (case is ignored). Data - User List User Name Name of this user. Password Enable The password for the current user. Passwords are case sensitive. When creating or changing a password, enter it in the Verify field also. Check this to enable dial-in; uncheck to suspend dial-in access. 34

43 Setup: Internet Router Dial-in Time limit After this time period, the user is disconnected. Allowable values are 0 (default) to 999 minutes. Zero means no time limit. Call Back Options are: Disabled:- User can simply dial-in; the device will not hangup and call back. Roaming:- After providing their name and password, the user is prompted for the call-back number. Fixed:- The number entered in the Telephone No. field is always used as the call-back number. Remote Users Remote users can use the same dial-up software they use for Internet access. They should check the following: Their ISDN TA must dial the telephone number of the ISDN Internet Router. Their software should be set to obtain an IP Address from the dial-in host. (This is the standard configuration; no changes should be required.) Upon connection, the ISDN Internet Router will allocate a suitable unused IP Address. When prompted for user name and password, they must enter the Name and Password stored in the ISDN Internet Router. Once connected, the remote user can access LAN resources as they normally would. They will appear to other LAN devices as a normal PC on the LAN, using the IP Address allocated by the ISDN Internet Router. 35

44 Internet Router User Guide Access Control Screen The Access Control feature allows administrators to restrict Internet Access by individual workstations. The process uses "Packet Filtering" to block or discard data packets. You can apply the pre-defined filters, and optionally define your own filters. By default, filtering is disabled; no packets are blocked or discarded. Selecting the Access Control tab will reveal a screen like the example below. 36

45 Setup: Internet Router Figure 14: Access Control Screen To use the Access Control feature: 1. Set the desired restrictions on the "Everyone"group, by selecting this group and clicking "Setup". By default, all PCs are in the "Everyone"group unless explicitly moved to another group. 37

46 Internet Router User Guide 2. Set the desired restrictions on the other groups ("Group 1", "Group 2", etc) as needed. 3. For each Workstation you wish to move from the "Everyone" group, enter their data and assign them to the desired group. You can limit Internet access for ALL PCs without entering ANY workstation data. Simply apply the desired restrictions to the "Everyone" group. Security Groups To Set or Change restrictions for a Security Group: 1. Select the group from the drop-down list. Note that the Security groups are pre-named "Everyone", "Group 1", "Group 2", "Group 3", and "Group 4". These names cannot be changed. 2. Click the Setup button to define restrictions for the selected group. An example screen is shown above. 3. Enter data on this screen as explained below. Click OK when finished. Data for each Group No restrictions Block all Access Use List Below No packets are blocked. Use this to create an "Unlimited Access" group, or to temporarily remove restrictions from a group. Groups members cannot access the Internet at all. Use this to create the most restrictive group. Enable or disable individual items as required. If set to Block, the item will be blocked, and the group will NOT have access. This table is ignored unless the Use List Below radio button is selected. 38

47 Setup: Internet Router Workstations This list shows all workstations (PCs) which have been defined. It is only necessary to define workstations in the following situations: To assign the workstation to a particular security group. To reserve an IP Address for this PC (or device), so that the DHCP Server function in the ISDN Internet Router will always allocate the same IP Address to this device, and never assign the reserved IP Address to any other device. Use the Add, Edit, and Delete buttons to modify the list as required. An example Add or Edit screen is shown below. Figure 15: Workstation 39

48 Internet Router User Guide Workstation Data Name Group Hardware (MAC) Address Reserve IP Address in DHCP Table Reserved IP Address Enter an identifier for this workstation. The name cannot contain spaces or punctuation. Select the security group for this workstation. If you only wish to reserve an IP Address, and are not using the Access Control features, simply leave this at "Default". Hardware or physical address. On a PC, this is often called the Network Adapter Address. You can use the Windows "Winipcfg" program or your LAN management program to find this address. (By default, there is no Start Menu item for Winipcfg so you must use the "Run" command or create your own shortcut.) Check this if you wish to reserve an IP address for this workstation. This is useful if you have to provide the IP Address for other programs or users. If this is left unchecked, the following entry can be ignored. This relates to the entry above. Enter the reserved address here. This MUST be within the range used by the DHCP server (set on the LAN screen). 40

49 Internet Application Screen This screen provides access to some advanced features of the ISDN Internet Router. Clicking the Internet Application tab will display a screen like the example below. Figure 16: Internet Application Screen Special Applications This feature is only required if you wish to use Internet applications which require 2-way communication, multiple connections, or combined TCP/UDP connections. 41

50 Internet Router User Guide Examples of such applications are Internet Videoconferencing, Telephony, Games Servers, and other special-purpose Servers. A number of the more common applications have been pre-defined, and will appear in the list. Generally, you will become aware of the need for this feature when an Internet application is unable to function correctly. At any time, only one (1) PC can use each Special Application. Operation To enable an existing entry: On the list of special applications, you can click the "Enable" column to toggle the "Enable" value On and Off. If creating or editing an entry, an Enable checkbox is available. To create a new entry: 1. Click the Add button. A screen like the following will be shown Enter data as described below. Figure 17: Special Applications 3. Click OK when finished. The new entry will appear in the list, and can be enabled and disabled like the pre-defined entries.

51 Setup: Internet Router Data - Special Applications Enable Name Use this to Enable or Disable support for this application, as required. Enter a descriptive name to identify this application entry. Outgoing Data Protocol Port Range: Start Port Range: Finish The protocol (TCP or UDP) used when you connect to the special application service. The beginning of the range of port numbers used by the application server, for data you send to it. If the application uses a single port number, enter it in both the "Start" and "Finish" fields. The end of the range of port numbers used by the application server, for data you send. Incoming Data Protocol Port Range: Start Port Range: Finish The protocol (TCP or UDP) used when the application or service sends data to you. The beginning of the range of port numbers used by the application server when data is sent to you. If the application uses a single port number, enter it in both the "Start" and "Finish" fields. The end of the range of port numbers used by the application server, when data is sent to you. 43

52 Internet Router User Guide Virtual Servers This feature is available only if you are using the ISDN Internet Router for shared Internet access, rather than for LAN-to-LAN connection. The Virtual Servers feature allows Internet users to access Servers on your LAN, via the ISDN Internet Router. Normally, Internet users would not be able to access a server on your LAN because: Your Server does not have a valid external IP Address. Attempts to connect to devices on your LAN are blocked by the firewall in this device. The "Virtual Server" feature solves these problems and allows Internet users to connect to your servers. However, your LAN must have an existing connection to the Internet. Internet users cannot open a connection. Virtual Server operation is illustrated below. 44

53 Setup: Internet Router Figure 18: Virtual Server Operation IP Address seen by Internet Users Note that, in this illustration, both Internet users are connecting to the same IP Address, but using different protocols. To Internet users, all virtual Servers on your LAN have the same IP Address. This IP Address is the IP Address from ISP on the Quick Setup screen. This address should be static (fixed), rather than dynamic, to make it easier for Internet users to connect to your Servers. Using Virtual Servers 1. Enable the Server type or types you wish to use. This can be done by clicking within the "Enable" column, to toggle the value On or Off. If creating or editing an entry, an Enable checkbox is available. 2. Enter the IP Address of each server on your LAN. 3. Click OK when finished. 4. Advise Internet users of the IP Address to use. (The IP Address allocated by the ISP, not the address on your LAN.) Note that because all Servers have the same IP Address, the appropriate client software (e.g. Browser, FTP client, Mail Client) must be used so that Internet users will be connected to the correct server. 5. Ensure that the connection to the Internet is established. Internet users cannot open a connection. Defining Virtual Servers If the type of Server you wish to use is not listed, you can define it by clicking the Add button. You will see a screen like the example below. 45

54 Internet Router User Guide Enter data on this screen as follows. Figure 19: Virtual Server Enable Protocol Name IP Address Internal Port Number External Port Number Use this to Enable or Disable support for this Server, as required. Select the protocol (TCP or UDP) used by the Server. Names can not contain spaces or punctuation, and are case insensitive (case is ignored). The IP Address of the PC on your LAN which is running the Server software. Enter the port number used by the Server to connect to clients. The port number used by clients when connecting to the Server. This is normally the same as the Internal Port Number. If it is different, this device will perform a "mapping" or "translation" function, allowing you to configure the server to use one port address, while clients use a different port address 46

55 Setup: Internet Router Exposed Computer This feature, if enabled, allows one (1) computer on your LAN to be exposed to all users on the Internet, allowing unrestricted 2-way communication between the "Exposed Computer" and other Internet users or Servers. Internet users will see the PC as having the IP Address allocated by ISP shown on the Quick Setup screen of this device. (This is the same IP Address used by the Virtual Servers.) Any Internet user who knows this address can connect to the Exposed Computer. (What happens after connection depends on what software both computers are using). This allows connection to special-purpose servers which require proprietary client software, or 2-way user connections such as Video-conferencing, which requires both users to run special software. To allow unrestricted access, the Firewall in this device is disabled, creating a security risk. You should use this feature only if the "Special Applications" feature is insufficient to allow an application to function correctly. This feature should be enabled only when required. Operation Enter the IP Address of the PC on your LAN which you wish to be the Exposed Computer. Enable this feature as and when required. 47

56 LAN-to-LAN Screen The LAN-to-LAN feature allows the ISDN Internet Router to connect to a remote LAN, via the ISDN link. The remote LAN must also have an ISDN Internet Router or compatible device; each device must be configured to connect to the other. One Server can be configured to initiate the connection, or both can dial-up as necessary. (In the latter case, there is a possibility that neither can connect because each is dialing the other.) NAT (Network Address Translation - the feature that allows all PCs on the LAN to share 1 external IP Address, and also provides firewall protection) is disabled when using the LAN-to-LAN function. Selecting the LAN-to-LAN tab will reveal a screen like the following example. 48

57 Setup: Internet Router Data - LAN-to-LAN Figure 20: LAN-to-LAN Screen Enable LAN-to-LAN / Disable Internet Access & Dial-in Use this to Enable and Disable the LAN-to- LAN feature. Note that if using LAN-to-LAN, both Internet Access and Dial-in are disabled. 49

58 Internet Router User Guide Remote Site Device IP Address Network Mask IP Address of the ISDN Internet Router at the remote LAN. Network Mask (Subnet mask) of the ISDN Internet Router at the remote LAN. Act as Receiver Enable Authentication In Act as Receiver mode, this device will accept a connection from the remote device. Use this to Enable/Disable this mode. Note that if both Act as Receiver and Initiate Connection are Disabled, LAN-to-LAN mode cannot function. Select the desired security option: Disable means no name/password checking is performed. No login name or password is required if this option is chosen. Warning: Anyone can connect; this is a major security risk. Enable uses the industry-standard "PAP" security method. Login Name Password When another ISDN Internet Router attempts to connect to this one, a log-in name and password will be requested. Enter the name and password (below) which permit access to this ISDN Internet Router. The password associated with the log-in name above. Enter the password in the Verify field also. 50

59 Setup: Internet Router Initiate Connection to Remote Site Enable Telephone Login using: Name Password In this mode, the ISDN Internet Router will connect to the remote site as required. Use this checkbox to Enable/Disable this mode. Note that if both Act as Receiver and Initiate Connection are Disabled, LAN-to-LAN mode cannot function. Telephone number to dial to connect to the remote LAN. The remote site must have another ISDN Internet Router or compatible device. The remote ISDN Internet Router will request a Log-in name and password. Enter the name and password required to gain access to the remote ISDN Internet Router. 51

60 Internet Router User Guide ISDN Screen In most situations, there is no need to change these settings. They are provided to allow you to: Use 1 B Channel for Internet access, rather than both. Set the outgoing call MSN (Multiple Subscriber Numbering) and SAD (Sub-address). Set the B Channel line speed to 56K, rather than 64K, and enter an "Initialization String" for the ISDN link. (Note: You should only do this if advised to do so by your phone company.) 52

61 Setup: Internet Router Figure 21: ISDN Screen Data - ISDN Screen Internet Access Usage Always use 1 B Channel Only 1 B Channel is used for Internet Access. The 2nd B Channel is never used for Internet 53

62 Internet Router User Guide The 2nd B Channel is never used for Internet Access, but is available for Dial-in Access (if enabled and configured). Dynamically use 2 B Channels Always use 2 B Channels For Internet Access, 1 or 2 channels are used, depending on the volume of traffic. If Dial-in Access is enabled, then the 2nd B Channel will be dropped if required to allow connection of an incoming call. If an Internet connection is required, both 2 "B" channels are always used. Howevery, the 2nd B Channel is still available for Dial-in Access (if enabled and configured). Outgoing Call ID MSN SAD If provided, enter the MSN (Multiple Subscriber Numbering) which receivers of your calls will see (using caller ID). The phone company will bill this number. If provided, enter the SAD (SubAddress). The SAD acts like an extension number to your main ISDN number. You can dial-up from this number instead of the main number. Incoming Call ID MSN SAD If provided, enter the MSN (Multiple Subscriber Numbering) which callers should use to connect to this device. If provided, enter the SAD (SubAddress). The SAD acts like an extension number to your main ISDN number. Incoming callers can connect by dialling this number. 54

63 Setup: Internet Router Advanced B Channel Settings B Channel Line Speed The default is 64K. Set to 56K only if advised to do so by your phone company. B Channel Init String This is normally not needed. If required, enter the value advised by technical support staff. 55

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65 Chapter 3 PC Configuration 3 This Chapter contains an overview of PC configuration. PC Configuration Check this figure and refer below condition to take different actions. TCP/IP Settings Figure 22: TCP/IP configuration of PC If you use the DHCP Server function: Configure each PC to be a DHCP client, as shown in Preparation of Web Browser Configuration in Chapter 2. If your LAN already has a DHCP server: On the LAN Tab of Utility, disable the DHCP server in the ISDN Internet Router. Configure your existing DHCP server to provide the Internet Router s IP Address as the Default Gateway. 57

66 Internet Router User Guide If your LAN has a Router or Routers Do NOT change any TCP/IP settings on any PC. Configure the router. See Chapter Routing for details. If you use static (fixed) IP Addresses: On each PC: Make sure the IP address is unique in the LAN. Set the Default Gateway Address (on the Gateway tab) to the IP Address of Internet Router. On the DNS tab, enter the same value as entered in the Internet Router. Internet Settings Each PC must be configured for Internet access via the LAN, rather than by dial-up connection. In Windows 95/98: Select Start Menu Settings Control Panel Internet. When prompted, select Access via LAN or click the SETUP to set this option. For other application, you may escape it and configure it later. Operation Internet Access Once your PC is configured to use Internet access via the LAN, simply use your Browser to connect to any Internet site. Accessing AOL To access AOL (America On Line) through the Internet Router, the following items are required: Internet account with an ISP, in addition to your AOL account. The Internet Router must be configured with details of the Internet account, as described in this chapter. Version 2.5, 3.0 or later of AOL for Windows communication software. The AOL for Windows software must be configured to use TCP/IP network access, rather than a dial-up connection. The configuration process is described below. 58

67 PC Configuration AOL for Windows Configuration Ensure that the Internet Router is configured first, then carry out the following procedure. Start the AOL for Windows communication software (Version 2.5, 3.0 or later). Click the Setup button. Select Create Location, and change the location name from "New Locality" to "Internet Router". Click Edit Location. Select TCP/IP for the Network field. (Leave the Phone Number blank.) Click Save, then OK. Configuration is now complete. Before clicking "Sign On", always ensure that you are using the "Internet Router" location. 59

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69 Chapter 4 Advanced Features 4 Generally, the following Settings and Features are optional. Only if you need to configure ISDN link, get powerful functions, or your LAN contains a Router or Router, is any further configuration required. Available Options The available options are listed below. Follow the relevant link to locate detailed information. Password Set or change the password for the ISDN Internet Router. The password is used to protect the configuration data. Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. LAN Use this to: Enable/Disable the DHCHP Server, or change the IP Addresses allocated by the DHCP server, or increase the number of DHCP clients supported. (Default is 50, maximum is 253.) Add or Delete entries in the Routing Table Enter additional DNS (Domain Name Server) IP Addresses Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. Dial-in Configure the ISDN Internet Router to allow users to Dial-in and use network resources on the local LAN. 61

70 Internet Router User Guide Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. Access Control Impose restrictions on the Internet Access enjoyed by particular workstations. Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. Internet Applications Use Virtual Servers, Special Internet Applications, or the Exposed Computer feature. Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. LAN-to-LAN Use the ISDN Internet Router to connect to another LAN, via the ISDN link. Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. ISDN These settings allow you to use 1 B channel instead of 2, set B channel parameters as advised by the phone company/technical support, or set the outgoing call ID. Please refer ISDNLink Router Configuration Utility section of Chapter 2 for more information. 62

71 Advanced Port Settings 63

72 Chapter 5 Routing 5 This Chapter explains the Routing features of the Internet Router. Overview While the ISDN Internet Router includes a standard routing table, this feature can be completely ignored if you do not have a router in your LAN. If you DO have a router, it is necessary to configure BOTH the Router and the Routing table in the ISDN Internet Router correctly, as described in the following sections. Router Configuration It is essential that all IP packets for devices not on the local LAN be passed to the ISDN Internet Router, so that they can be forwarded to the Internet. To achieve this, the Routers must be configured to use the ISDN Internet Router as the Default Route or Default Gateway. Local Router The local router is the Router installed on the same LAN segment as the ISDN Internet Router. This router requires that the Default Route is the ISDN Internet Router itself. Typically, routers have a special entry for the Default Route. It should be configured as follows. Destination IP Address Normally , but check your router documentation. Network Mask Normally , but check your router documentation. Gateway IP Address The IP Address of the ISDN Internet Router. 64

73 Routing Metric 1 Other Routers Other routers must use the ISDN Internet Router's Local Router as the Default Route. The entries will be the same as the ISDN Internet Router's local router, with the exception of the Gateway IP Address. For a router with a direct connection to the ISDN Internet Router's local Router, the Gateway IP Address is the address of the ISDN Internet Router's local router. For routers which must forward packets to another router before reaching the ISDN Internet Router's local router, the Gateway IP Address is the address of the intermediate router. Routing Example Figure 23: Routing Example For the LAN shown above, with 2 routers and 3 LAN segments, the required entries would be as follows. For the ISDN Internet Router's Routing Table The ISDN Internet Router requires 2 entries as follows. 65

74 Internet Router User Guide Entry 1 (Segment 1) Destination IP Address Network Mask (Standard Class C) Gateway IP Address (ISDN Internet Router's local Router) Entry 2 (Segment 2) Destination IP Address Network Mask Gateway IP Address For Router A's Default Route Destination IP Address Network Mask Gateway IP Address (ISDN Internet Router's IP Address) 66

75 Routing For Router B's Default Route Destination IP Address Network Mask Gateway IP Address (ISDN Internet Router's local router) Routing Table Entries On the LAN tab, routing entries will appear as in the example screen below. 67

76 Internet Router User Guide Figure 24: LAN Tab Operations To delete an existing entry: Select the desired name from the list. Click the Delete button. To create a new entry: Click the Add butto. Enter data as shown below. Click OK to save. Routing Table Data An entry in the routing table is required for each LAN segment on your Network, other than the segment to which this device is attached. The data for each entry is as follows. Destination IP Address The network address of the remote LAN segment. For standard class "C" LANs, the network address is the first 3 fields of this Destination IP Address. The 4 th (last) field can be left at 0. Network Mask The Network Mask used on the remote LAN segment. For class "C" networks, the standard Network Mask is Gateway IP Address The IP Address of the Router on the LAN segment to which this device is attached. (NOT the router on the remote LAN segment.) Metric The number of routers which must be navigated to reach the remote LAN segment. The default value is 1. 68

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78 Chapter 6 Status & Monitoring 6 Overview The Internet Router allows you to connect to it through the LAN while it is operating. You can monitor the operation of the ISDN link. Browse the Internet Router and click the STATUS tab to get below window. The other way is to use ISDNLink Router Configuration Utility and click STATUS tab, please refer Chapter 2 for more information. Status Screen Figure 25: Status Screen 70

79 Status & Monitoring Current Connection Usage This indicates whether the ISDN Internet Router is being used for Internet Access, LAN-to-LAN connection, or dial-in. Name For Internet access, the account name is displayed. For Dial-in, the name of the dial-in user is displayed. For LAN-to-LAN, the name of the remote device is displayed. IP Address The IP Address used by this device, allocated by the remote device. This address is provided by the ISP if connected. (Or by the remote ISDN Internet Router, if using LAN-to-LAN. Connection Log This shows status to the PPP link over the ISDN line. Common messages are shown in the following table. Message Description Dialing Dialing the ISP Try to establish physical connection. The device is trying to connect with the ISP. Busy error The number dialed was busy. Physical line is connected Physical connection to ISP has been established. Start PPP A PPP connection is now being established. 71

80 Internet Router User Guide PPP up fail The PPP connection could not be established. PPP up successfully The PPP connection was established successfully. Stop PPP The PPP connection was terminated. This will occur at the end of a session, or an error condition. Idle timer expires The "Idle time-out" has been triggered. (There was no data sent or received for the duration of the "Idle time" period.) Buttons Dial/Hang Up - Dial your ISP or hang up, depending on whether or not a connection exists. Tech Log - Display ISDN messages, instead of connection messages. This is only to assist technical support staff. Clear Log - Delete existing data in the log. This makes new data easier to read. Refresh - Update the Log. 72

81 Appendix A Troubleshooting A This Appendix covers the most likely problems and their solutions. Overview This section covers some common problems that may be encountered while using the Internet Router and some possible solutions to them. If you follow the suggested steps and the Internet Router still does not function properly, contact your dealer for further advice. Internet Access Problem 1 Solution 1 Problem 2 Solution 2 Can t connect to the Internet Router to configure it. Check the following: The Internet Router is properly installed, LAN connections are OK, and it is powered ON. Ensure that your PC and the Internet Router are on the same network segment. (If you don't have a router, this must be the case.) Ensure that your PC is using an IP Address within the range to and thus compatible with the Internet Router's default IP Address of In Windows, this is done by using Control Panel- Network to check the Properties for the TCP/IP protocol. You can also use the WinIPcfg program by entering WinIPcfg (without the quotes) in the Run dialog box. When I enter a URL or IP address I get a time out error. A number of things could cause this. Try the following troubleshooting steps. 73

82 Internet Router User Guide troubleshooting steps. 1. If using static IP Addresses, ensure that your workstations IP settings are correct, including IP address, default gateway and DNS. 2. Ping the Internet Router. Use the Run command to enter the following command: Ping xxx.xxx.xxx.xxx where xxx.xxx.xxx.xxx is the IP address assigned to the Internet Router. 3. If the ping command fails, check that the Internet Router is connected and ON. If it is connected and on, there is a problem with your LAN. 4. Run your Browser and connect to the Internet Router. 5. On the ISDN screen, check that Operation is set to "Enable". 6. Check the ISDN Status screen, and examine the Connection Log. For details of the Log messages. Problem 3 Solution 3 Some applications do not run properly when using the Internet Router. The ISDN Internet Router processes the data passing through it, so it is not transparent. The Internet Application screen has 2 features designed to assist with running non-standard applications: Special Applications Exposed Computer You should use the Special Applications feature if possible. If necessary, additional applications can be defined, using data provided by the service provider. Remember that at any time, only one (1) user can use a particular Special Application. If this cannot be made to work, use the Exposed Computer feature. This is a security risk, so should only be used if essential. 74

83 r Problem 4 Solution 4 Problem 5 Solution 5 My modem can't establish a connection to the ISDN Internet Router. You can NOT use a modem. You must use an ISDN TA, and establish an ISDN link. When using Dial-in, I get an IP Address conflict involving the dial-in PC. This can happen if you are not using the DHCP Server feature of the ISDN Internet Router. The ISDN Internet Router must allocate an IP Address to the dial-in PC, even if the DHCP Server is disabled. It uses the IP Address shown in the Start IP Address field for the DHCP Server, on the LAN tab. If this causes an IP Address conflict, you can change this value as follows: 1. On the LAN tab, enable the DHCP Server function. 2. Select an unused IP Address from the address range used on your PC, and enter in the Start IP Address field. 3. Disable the DHCP Server function. 75

84 Appendix B Hardware Specifications B Internet Router INET-800 Dimensions Operating Temperature Storage Temperature Network Protocol: Network Interface: ISDN Port LEDs Power Adapter 245mm(W) * 140mm(D) * 40mm(H) 0 C to 40 C -10 C to 70 C TCP/IP 10/100M BaseT (UTP) connectors RJ45 connector, S/T interface, 4 wire full duplex, AMI line code 1 Power indicator 3 LAN status 3 ISDN Status External 12V DC 76