3Com DIGITAL MODEM Conguring the 3Com Impact Digital Modem

2-6 CHAPTER 2: INSTALLING AND CONFIGURING THE DIGITAL MODEM

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.

10 Turn on the computer’s power switch and restart.

11 Go to the section “Conﬁguration for Apple Macintosh

Computer” later in this chapter to conﬁgure the 3Com

Impact digital modem.

Conﬁguring the 3Com Impact Digital Modem

The 3Com Impact digital modem requires the ﬁve essential

conﬁguration parameters below before it can operate

properly on an ISDN line. Before conﬁguring the digital

modem, make sure you have this information readily

available. These ﬁve parameters are provided to you at the

time of installation of your ISDN line by the telephone

company installer.

■ISDN Switch Type

■Phone #1 (local directory telephone number)

■SPID #1 (Service Proﬁle Identiﬁer)

■Phone #2 (if required by the telephone company)

■SPID #2 (if required by the telephone company)

Each of these items is stored in special S registers within the

digital modem. These S registers are set by issuing ATSxx=

commands to the digital modem. The Impact digital modem

software will automatically issue the AT commands to set the

S registers as part of the conﬁguration process.

The following three sections describe how to conﬁgure the

3Com Impact digital modem using the Windows, DOS, or

Macintosh operating systems, respectively.

Contents

Main 3Com Corporation 95052-8145 Santa Clara, California 5400 Bayfront Plaza C ONTENTS 3 A C B F IGURES T ABLES A How to Use This Guide Introduction UIDE Conventions Table 1 and Table 2 list text and icon conventions that are used throughout this guide: I NTRODUCTION Page 3Com Impact Digital Modem Features Data Capabilities Voice Capabilities Simultaneous Data and Voice Capabilities Analog Modem Capabilities 3Com Impact Digital Modem Package Contents Standard Package Contents Additional Contents ISDN Digital Line Conguration Requirements Computer System Requirements IBM PC or Compatible Requirements Apple Macintosh Requirements Cabling Requirements 2 C THE DIGITAL MODEM Page Installing the 3Com Impact Digital Modem Installing the Digital Modem in an IBM-compatible PC Page Page Conguring the 3Com Impact Digital Modem Conguration for IBM PC or Compatible Computer Page Page Page Page Page Conguration for Apple Macintosh Computer Page Placing and Receiving Calls Placing ISDN Data Calls Multilink PPP Calls With Dynamic Bandwidth Allocation Page Placing Analog Modem Calls Using Communications Software to Place Calls Receiving Data Calls Using the Phone Out Port Placing Calls Using the Phone Out Port Receiving Calls Using the Phone Out Port Protocol Support Async-Sync PPP Conversion QuickSelect 3 Troubleshooting Tips Page Page Page Downloading Firmware to Your External Digital Modem Page A O Page B REGISTERS, AND RESULT C AT Command Set for the 3Com Impact Digital Modem Table B-1 summarizes the AT command set. Page Page AT Command Set for Internal Analog Fax Modem Table B-1 summarizes the AT command set for the internal analog modem. Page Page Remote S Registers Page Page Digital Modem Result Codes Table B-4 lists the 3Com Impact digital modem result codes. C On-line Technical Services 3Com Bulletin Board Service World Wide Web Site Ask3Com on CompuServe 3ComFacts Automated Fax Service Support from Your Network Supplier Support from 3Com Returning Products for Repair