Contents v

About autobaud

6-10

Using the analog device ports

6-11

Receiving analog calls

6-12

Call routing to the analog device ports

6-13

Receiving data calls

6-16

Chapter 7 — Troubleshooting

7-1

Netopia ISDN Modem LEDs

7-2

Troubleshooting tips

7-4

Downloading firmware to your ISDN modem

7-8

From a PC

7-8

From a Macintosh computer

7-10

Appendix A — Modem Operation

A-1

Modem basics

A-2

Operating modes

A-2

The AT command set

A-3

Using the modem

A-5

Modem command summaries

A-8

AT commands

A-8

S registers

A-11

ISDN modem result codes

A-17

Appendix B — ISDN Events

B-1

ISDN event cause codes

B-2

Appendix C — Technical Specifications

C-1

RS-232-D pin assignments

C-3

PC serial cable pin assignments

C-4

Macintosh DIN-8 pin assignments

C-5

Regulatory notices

C-6

Appendix D — About the COM Port Accelerator

D-1

Installation

D-2

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Farallon Communications 612, 412 manual Contents