126 User’s Reference Guide

byte: A group of bits, normally eight, which represent one data character.

CallerID: See CND.

CCITT (Comite Consultatif International Telegraphique et Telephonique): International Consultative Committee for Telegraphy and Telephony, a standards organization that devises and proposes recommenda- tions for international communications. See also ANSI (American National Standards Institute).

CHAP (Challenge Handshake Protocol): A method for ensuring secure network access and communications.

Class A, B, and C networks: The values assigned to the first few bits in an IP network address determine which class designation the network has. In decimal notation, Class A network addresses range from 1.X.X.X to 126.X.X.X, Class B network addresses range from 128.1.X.X to 191.254.X.X, and Class C addresses range from 192.0.1.X to 223.255.254.X.

client: An intelligent workstation that makes requests to other computers known as servers. PC computers on a LAN can be clients.

clustering: A feature that clusters remapped network numbers into a range of sequential network numbers.

CNA (Calling Number Authentication): A security feature that will reject an incoming call if it does not match the Calling Number field in one of the Netopia ISDN Router’s connection profiles.

CND (Calling Number Delivery): Also known as caller ID, a feature that allows the called customer premises equipment (CPE) to receive a calling party’s directory number during the call establishment phase.

community strings: Sequences of characters that serve much like passwords for devices using SNMP. Different community strings may be used to allow an SNMP user to gather device information or change device configurations.

CRC (Cyclic Redundancy Check): A computational means to ensure the integrity of a block of data. The mathematical function is computed, before the data is transmitted at the originating device. Its numerical value is computed based on the content of the data. This value is compared with a recomputed value of the function at the destination device.

DCE (Data Communications Equipment): Term defined by standards committees that applies to communications equipment, typically modems or printers, as distinct from other devices that attach to the network, typically personal computers or data terminals (DTE). The distinction generally refers to which pins in an RS-232-C connection transmit or receive data. Also see DTE.

DDP (Datagram Delivery Protocol): Defines socket-to-socket delivery of datagrams over an AppleTalk internet.

default zone: When a Phase II EtherTalk network includes more than one zone, all routers on that network must be configured to assign one of these zones as a default zone. The default zone is temporarily assigned to any Phase II EtherTalk node that hasn’t chosen a zone. The user may choose another zone by opening the Network Control Panel, selecting the correct physical connection, and then choosing a zone in the scrolling field displayed.

DHCP (Dynamic Host Configuration Protocol): A service that lets clients on a LAN request configuration information, such as IP host addresses, from a server.

DNS (Domain Name Service): A TCP/IP protocol for discovering and maintaining network resource information distributed among different servers.

download: The process of transferring a file from a server to a client.

DSU: Digital Service Unit. A device for connecting a communications line to an external digital circuit.

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Netopia D3100-I IDSL, D7171 SDSL, D7100 SDSL, D3232 IDSL manual User’s Reference Guide
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D7100 SDSL, D3232 IDSL, D3100-I IDSL, D7171 SDSL specifications

Netopia offers a range of advanced digital subscriber line (DSL) modems that cater to various connectivity needs. Among these, the D7171 SDSL, D3100-I IDSL, D3232 IDSL, and D7100 SDSL models stand out for their robust features and technologies designed to enhance the user experience.

The Netopia D7171 SDSL modem is engineered for symmetrical digital subscriber line (SDSL) services, delivering equal upload and download speeds. It supports high-speed data transfers over standard copper lines, enabling businesses to maintain consistent performance for applications such as video conferencing and large file transfers. Key features of the D7171 include enhanced security protocols, a built-in firewall to protect against unauthorized access, and multiple interface options for flexible connectivity.

Moving to the D3100-I IDSL, this model caters to users who require a reliable internet connection over a longer distance than traditional DSL can provide. The IDSL technology enables it to function effectively in areas where standard DSL is unavailable or unreliable. It provides a lower bandwidth solution yet is valuable in reaching remote locations. This modem is particularly recognized for its ease of installation and robust performance, featuring built-in diagnostics that help troubleshoot potential connection issues.

In the same family, the D3232 IDSL offers similar advantages but with a focus on higher capacity and scalability. It is designed for small to medium enterprises that require greater bandwidth for multiple users or devices. This modem also supports both voice and data transmission, making it an attractive option for unified communications. The D3232 comes equipped with advanced networking features, including Quality of Service (QoS) capabilities to prioritize bandwidth for critical applications.

Lastly, the D7100 SDSL modem is distinguished by its versatility and high-performance output. Supporting SDSL standards, it is perfect for businesses that need reliable, symmetrical speeds. This model is characterized by its extensive range of connectivity options, including Ethernet ports and support for various network protocols, ensuring seamless integration into existing network infrastructures. Additionally, it boasts excellent reliability, making it a favored choice for mission-critical applications.

In summary, Netopia's DSL modems, including the D7171 SDSL, D3100-I IDSL, D3232 IDSL, and D7100 SDSL, provide scalable and reliable internet connectivity solutions tailored to meet diverse business needs. With cutting-edge technology and a suite of features designed for performance, these models are well-suited to enhance productivity and support modern communications.
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