2-4 CHAPTER 2: INSTALLING AND CONFIGURING THE DIGITAL MODEM

7Connect the RJ-45 (8-pin) connector end of the RJ-45/RJ-11 ISDN cable to the RJ-45 connector labeled Wall on the digital modem’s back panel.

See Figure 2-1 for the location of the RJ-45 connector on the digital modem’s back panel.

8Connect the RJ-11 (6-pin) connector end of the RJ-45/RJ-11 ISDN cable to the RJ-11 ISDN wall jack.

CAUTION: The 3Com Impact digital modem is designed to operate with Basic Rate ISDN 2B1Q U Interface network terminations. An internal Network Termination device (NT1) is built into the digital modem. Do not connect the 3Com Impact digital modem ISDN port to a standard analog telephone jack or to an external NT1 device. Make sure that it is connected to the ISDN jack.

9Turn on the 3Com Impact digital modem by toggling the power switch on the back panel to the On position.

See Figure 2-1 for the location of the power switch on the digital modem’s back panel. The indicator LEDs on the front panel (see Figure 2-2) flash momentarily as the unit undergoes a power-up self-test diagnostic.

10Turn on the computer’s power switch.

11Go to the section “Configuration for IBM PC or Compatible Computer” later in this chapter to configure the 3Com Impact digital modem.

Installing the Digital Modem in an Apple Macintosh Computer

To install the 3Com Impact digital modem model 3C875 or

3C877 in an Apple Macintosh computer:

1Turn off the computer.

2Ensure that the 3Com Impact digital modem power switch is in the Off position.

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3Com DIGITAL MODEM manual Installing the Digital Modem in an Apple Macintosh Computer

DIGITAL MODEM specifications

The 3Com Digital Modem represents a significant advancement in communication technology, designed to enhance data transmission over telephone lines. This modem is a part of a lineage of 3Com products that focus on delivering robust networking solutions, tailored for both personal and professional use.

One of the main features of the 3Com Digital Modem is its high-speed data transfer capabilities. With speeds reaching up to 56 Kbps, it allows users to send and receive large amounts of data quickly, which is essential for applications that require efficient data exchange. This speed ensures smoother internet browsing, quicker downloads, and more reliable connections for applications such as video conferencing and online gaming.

The modem is equipped with advanced error correction technologies, including V.42 and V.42bis protocols. These protocols help to maintain data integrity by detecting and correcting errors during transmission. This results in a more reliable connection, reducing the likelihood of dropped calls or corrupted data transfers, which can be particularly frustrating for users engaged in critical business communications.

Another notable characteristic of the 3Com Digital Modem is its compatibility with various operating systems, making it versatile for different users. It supports Windows, Mac, and various other platforms, ensuring that it can be integrated seamlessly into existing systems without the need for extensive configuration. This plug-and-play capability simplifies installation for users, allowing them to get connected quickly and efficiently.

The modem also incorporates an innovative design that facilitates improved heat dissipation, ensuring optimal performance during prolonged use. Its compact form factor makes it suitable for both home and office environments, allowing for easy setup without consuming excessive desk space.

In addition to these features, the 3Com Digital Modem boasts strong security protocols, ensuring that users' data is protected against unauthorized access while being transmitted. This is particularly important in today’s digital landscape, where data breaches and cyber threats are prevalent.

Overall, the 3Com Digital Modem combines speed, reliability, and security, making it a valuable asset for anyone looking to enhance their connectivity experience. Its robust feature set and user-friendly design cater to a broad audience, from casual users to business professionals, reflecting the evolution of modem technology in a digital-first world.