Lancom Systems 1621, 821, 1711 manual ADSL-over-ISDN or ADSL-over-POTS?, Code

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LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Chapter 1: Introduction

ISDN). Other models like LANCOM 1711 VPN are connected to the splitter using a separate ADSL modem.

Telephone

Switching node

 

Telephone

network

 

 

 

 

 

 

Splitter

 

 

 

Splitter

 

 

 

Internet

DSL access

 

 

 

multiplexer

ADSL

 

 

 

Router

 

 

ADSL provider

modem

Subscriber

 

 

The model LANCOM 1711 VPN can also utilize other broadband con- nections (e.g. cable modem) that offer a 10/100Base-Tx-Ethernet connector over PPPoE, PPTP or plain Ethernet (with or without DHCP).

The models LANCOM 821 ADSL/ISDN and LANCOM 1621 ADSL/ISDN can use this option, if the first LAN port is configured as WAN inter- face.

ADSL-over-ISDN or ADSL-over-POTS?

ADSL can operate over modern ISDN telephone service as well as conven- tional analog service (POTS – Plain Old Telephone Service).

There are, however, different technical specifications for the two telephone systems. For this reason, devices in the LANCOM series are offered in two dif- ferent versions: A version for ADSL-over-POTS and a version for ADSL-over- ISDN.

You can determine which telephone system a device supports by looking at the model description on the bottom of the device. The label containing the device name also contains an additional code which stands for the telephone system the device supports:

Code

Supported telephone system

'Annex A'

ADSL-over-POTS

 

 

'Annex B'

ADSL-over-ISDN

 

 

EN

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Contents Lancom 821 ADSL/ISDN Lancom 1621 ADSL/ISDN Lancom 1711 VPN Lancom Systems GmbH, Wuerselen Germany. All rights reserved Thank you for placing your trust in this Lancom product Security settingsPreface Model variants Preface Contents Sending faxes with Lancapi Providing dial-up accessInstallation of the MS Windows fax service Sending a fax Linking two networksAppendix Security checklistTroubleshooting Addresses Access to a complete local network LANIntroduction How does Adsl work?Ideal for Internet surfers All services via a single cable-thanks to the splitterCode ADSL-over-ISDN or ADSL-over-POTS?Which use does VPN offer? Conventional network infrastructure Networking via the Internet Firewall What does a router do? Denial-of-Service ProtectionQuality-of-Service / Traffic management LAN to LAN coupling via VPN or Isdn Bridgehead to the WANAreas of deployment for routers At least one for WAN connectionsConventional via Isdn Remote access to the company network via VPN or IsdnWhat can your Lancom do? WAN connection Configuration System preconditions InstallationPackage contents Front side Introducing LancomStatus displays LED remains lit green Top panelMeanings of the LEDs Online LED indicates the overall status of all WAN ports Flashing Power LED but no connection?Data traffic via the DSL connection Connection status of the Adsl linkConnection status of the WAN connection Data traffic via the Adsl linkSeparate status display for both Isdn B channels Status of the four LAN ports in the integrated switchBack of the unit Hardware installation Using the included power adapter Adsl connector cable transparent plugsStarting Lancom setup Software installationWhich software should you install? Which information is necessary? Basic configuration1 TCP/IP settings IP address and netmask for the Lancom New LAN-fully automatic configuration possibleConfigure manually nevertheless? Information required for manual TCP/IP configurationEnable Dhcp server? Configuration protectionSettings for the DSL connection Settings for the Isdn connectionConnect charge protection Instructions for LANconfigStart up LANconfig by clicking Start Programs Lancom LANconfigComplete the configuration with Finish Network without Dhcp server Instructions for WEBconfigOr with a name as discribed above Starting the wizards in WEBconfigNetwork with Dhcp server Basic configuration Entering the password in the web browser Manual IP address assignment TCP/IP settings to workstation PCsIP address assignment via the Lancom default IP address assignment via a separate Dhcp serverBasic configuration Additional information for unknown Internet providers Setting up Internet accessDoes the setup wizard know your Internet provider? Dynamic channel bundling Isdn only User name and passwordProtocol PPPoE, Pptp or Plain Ethernet IPoE Additional connection optionsComplete the configuration with Apply Tools Setup WizardLANconfig Quick access to the setup wizards Security aspects Always configure both sidesLinking two networks General information What information is necessary?Isdn Settings for the TCP/IP router Extranet VPN Settings for the IPX routerDNS access to the remote LAN Settings for NetBIOS routing Perform the configuration on both routers, one at a time Ping quick testing for TCP/IP connections Which information is required? Providing dial-up accessCoupling Entry Isdn calling line identity CLI Settings for TCP/IPWAN Settings for IPXDial-up via Isdn Settings for the dial-in computerDial-up via VPN Instructions for LANconfig Instructions for WEBconfig Sending faxes with Lancapi Lancom CD Installation of the Lancom Capi fax modemSelect the option Printers and Faxes from the control panel Installation of the MS Windows fax serviceSend a fax with any given office application Send a fax with the MS Windows fax serviceSending a fax Sending faxes with Lancapi Wizard for LANconfig Security settingsSecurity settings wizard Firewall wizard Wizard for WEBconfigRules Security checklistConfiguration under WEBconfig Do you make use of a ’Deny All’ Firewall strategy? Have you assigned a password for the configuration?Have you permitted remote configuration? Have you activated the Firewall?Have you closed critical ports with filters? Is your saved Lancom configuration stored in a safe place?DSL data transfer is slow TroubleshootingProblems with the cabling? No WAN connection is establishedLAN statistics Cable testingUnwanted connections under Windows XP Increasing the TCP/IP window size under WindowsTroubleshooting Appendix Performance data and specificationsATM Pin RJ45 socket Contact assignmentAdsl interface Pin RJ45 socket, corresponding to ISO 8877, EN Ethernet WAN interface Lancom 1711 VPNISDN-S0interface Pin mini-DIN socket Configuration interface OutbandCE declaration of conformity Ethernet interfaces 10/100Base-TNumerics IndexConnector cable Configuration port Channel FirmSafe IPX conventions Flat rate IPX router SettingsHardware installation 1TR6 Caller ID Installation ConnectionLAN to LAN coupling 17, 18, 19, 34 Power adapter 21, 27NetBIOS Security aspects Server Setup Specify MSNSystem preconditions Connector cable WAN connection Settings Stateful Inspection TelephoneOnline Power Voltage switch WAN data VPN client WAN status Switch
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1621, 1711, 821 specifications

Lancom Systems is a notable player in the networking solutions market, and its range of routers, specifically the 821, 1621, and 1711 models, showcases the company's commitment to delivering robust, high-quality products for various enterprise needs. Each model brings distinct features, making them suitable for different environments and operational demands.

The Lancom 821 is particularly designed for small to medium-sized enterprises (SMEs) requiring reliable internet connectivity and secure networking. This router supports various VPN technologies, ensuring secure data transmission across the organization. Equipped with advanced firewall capabilities, the 821 can handle multiple connections while protecting against potential cyber threats. Its support for IPv6 enhances compatibility with future networks, making it a long-term investment. The device’s manageable architecture allows for remote access and troubleshooting, reducing the need for on-site IT interventions.

On the other hand, the Lancom 1621 is tailored for larger organizations or those with more extensive networking demands. This model offers enhanced throughput and is capable of managing large volumes of traffic without compromising performance. It features a variety of WAN connection options, including DSL, LTE, and fiber, allowing businesses to choose the best solution for their requirements. The 1621 also incorporates sophisticated Quality of Service (QoS) settings, which prioritize critical applications to ensure optimal performance during peak times. Built-in redundancy features enhance reliability, making it an excellent choice for mission-critical applications.

The Lancom 1711 takes networking capabilities a step further, targeting enterprises with even more complex needs. It boasts advanced routing and switching features, making it suitable for enterprise-grade deployments. The 1711 supports enterprise WLAN management, allowing seamless integration with wireless access points. Its robust performance over WAN connections enables the deployment of various real-time applications, such as voice over IP (VoIP) and video conferencing, without latency issues. Security is a top priority, with features including an IPSec VPN and integrated threat detection to safeguard organizational data.

In summary, the Lancom 821, 1621, and 1711 routers serve as versatile tools for businesses, each designed with distinct capabilities to meet specific networking needs. Their strengths lie in their security features, support for various connection types, and reliable performance under heavy loads. With these devices, organizations can ensure that their network infrastructure not only meets current demands but is also poised for future growth.
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