7. Functional description

The ED-20 can be in either configuration mode or in application mode. Normally the ED-20 is in application mode, where the serial-to-network data transfer is enabled and all configuration settings are readable.

Change of configuration parameters are done in ED-20 configuration mode. Configurable

parameters are listed in chapter 6.3.

7.1 Application mode

In application mode the ED-20 transfers data between the serial interface (CH1) and the network interface (10BaseT). At the network interface data is transferred using the TCP/IP protocol suit. At the serial interface data is transferred using PPP.

7.1.1 About PPP

PPP(the Point to Point Protocol) is a mechanism for creating and running TCP/IP over a serial link – a direct serial connection or a link made using one of following: Westermo analogue PSTN-, Leased-line-, ISDN-, GSM-, Radio-, Fibre- or Short-haul modem.

Other computers can connect via the ED-20 and communicate over the PPP link using FTP,Telnet,Web, etc. in the same manner as with an Ethernet TCP/IP link. One major difference between a PPP and an Ethernet connection is of course the speed. A standard Ethernet connection operates at 10 Mbs maximum theoretical throughput, whereas an analogue modem operates at speeds up to 56 kbps.

PPPis strictly a peer to peer protocol; there is no difference between the machine that dials in and the machine that is dialed into. However, it is still useful to think in terms of servers and clients.When you dial into a site to establish a PPP connection, you are a considered the client.The machine to which you connect is considered the server. Authentication is provided with the protocols PAP and CHAP.

7.1.2 Network interfaces

ED-20 has two network interfaces, Ethernet and PPP, so the unit can forward IP-packets between these interfaces.

7.1.2.1 Ethernet connection

This interface is a part of the local network and the ‘Local IP Address’* and ‘Subnet Mask’ must be set to the right ‘Network ID’

*The IP address must be compliant to the attached network. Ask the network administrator when in doubt.

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Digicom ED-20 PPP Functional description, Application mode, About PPP, Network interfaces, Ethernet connection
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ED-20 PPP specifications

The Digicom ED-20 PPP is a sophisticated and versatile device designed to provide seamless communication solutions for both personal and professional use. As a cutting-edge platform for Point-to-Point Protocol (PPP), the ED-20 facilitates efficient data transmission over various communication networks, enhancing connectivity while ensuring security and reliability.

One of the main features of the Digicom ED-20 PPP is its robust support for multiple network technologies, including ISDN, dial-up, and broadband connections. This flexibility allows users to connect seamlessly to the internet or private networks, adapting to various scenarios and ensuring that they remain connected regardless of the circumstances. The ED-20's capability to support diverse communication methods makes it an ideal choice for businesses and individuals who require reliable data access.

The ED-20 excels in providing efficient data compression and error correction mechanisms. By employing advanced algorithms, it minimizes data payloads and enhances the speed of transmission. This feature is particularly beneficial for environments with limited bandwidth, as it allows users to optimize their data usage without sacrificing performance. The device’s ability to maintain high-speed communication even in challenging conditions highlights its technological prowess and adaptability.

Another hallmark of the Digicom ED-20 PPP is its easy-to-use interface and setup process. Designed with user experience in mind, the device requires minimal technical knowledge to configure and operate. This user-friendly approach ensures that even those unfamiliar with network technologies can benefit from its advanced features without a steep learning curve.

Security is paramount in today’s digital landscape, and the ED-20 PPP incorporates multiple security protocols to safeguard data transmission. By utilizing encryption and authentication techniques, the device ensures that sensitive information remains protected during transfer, making it an indispensable tool for organizations handling confidential data.

In terms of physical characteristics, the Digicom ED-20 PPP is compact and designed for portability, making it suitable for a variety of environments, including remote work settings and traveling professionals. Its durable construction guarantees longevity, while its lightweight design enhances mobility.

Overall, the Digicom ED-20 PPP stands out as a reliable and feature-rich solution for diverse communication needs, combining flexibility, efficiency, and security in a single device. Whether for business or personal use, the ED-20 effectively meets the demands of modern connectivity.
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