Introduction, How does Adsl work?, Addresses

	LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN
	Chapter 1: Introduction
1	Introduction
	The models LANCOM 821 ADSL/ISDN, LANCOM 1621 ADSL/ISDN and
	LANCOM 1711 VPN are fully-featured routers that therefore also can be used
	in combination with the integrated firewall for providing secure Internet
	access to a complete local network (LAN).
	The VPN option, which is either integrated already or can be activated subs-
	quently, enables the LANCOM 1621 ADSL/ISDN and LANCOM 1711 VPN to
	act as powerful Dynamic VPN gateways for external offices or mobile users.
	The LANCOM models offer each a DSL or ADSL connector and also an ISDN
	connector. The ISDN line can be used as back-up for the DSL connection, for
	remote management of the router, as basis for the office communication via
	LANCAPI or for establishing VPN connections to remote sites with dynamic IP
	addresses.
1.1	How does ADSL work?
For LANCOM 821	Since the late 1980s, scientists have been working on the idea of using con-
ADSL/ISDN and	ventional telephone lines for video and multimedia applications.
LANCOM 1621
ADSL/ISDN only	High speed via standard telephone lines
	High speed via standard telephone lines
	Their approach was based on the use of telephone lines only for the distance
	between the subscriber and the next local exchange. From the switching
	center, the data is then transferred via high-speed connections to the desired
	destination or target network (i.e. the Internet). This minimization of the tel-
	ephone line distance used permits considerably higher transfer rates than
	would be possible when relying solely on the telephone network.

LAN

ADSL connection via

telephone line

Internet

LANCOM

Local exchange (central office)

All DSL technologies, of which ADSL is the most common, are based on this concept. Thanks to their high transfer speeds, DSL connections are well-suited for Internet access.

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.

Lancom Systems 821 Introduction, How does Adsl work?, Access to a complete local network LAN

Models: 1621 1711 821

Introduction

access to a complete local network (LAN).

addresses.

How does ADSL work?

High speed via standard telephone lines

1621, 1711, 821 specifications