Farallon Communications 412, 612 manual Placing calls using AT commands

6-2 Netopia ISDN Modem User’s Guide

Placing calls using AT commands

Your communications software can communicate with the Netopia ISDN Modem using standard AT commands. To configure your software, select a Hayes-compatible modem configuration, such as “generic modem,” if no special setting is available for the Netopia ISDN Modem. Refer to your communications software documentation for more details.

When you place a call from a PC or Macintosh computer, the Netopia ISDN Modem recognizes the AT command ATD to dial a digital ISDN data call. Depending on the setting of S register 60, 56 Kbps (default) or 64 Kbps B channel transmission speeds are used. Correct examples of outgoing circuit-switched ISDN modem commands with dial strings are shown below.

■Dialing with spaces: AT D 1 908 555 7891

■Dialing without spaces: ATD19085557891

■Making a Toll Saver (Switched 56) call: ATDD 19085551234

Note: All outgoing calls can be forced to be Toll Saver calls by setting S register 61 to 1.

Enter ATS61=1

Note: Most areas require you to dial ISDN calls with 11 digits (for example, 1-800-555-1212), even for local calls.

■Making a Multilink PPP call using two numbers: ATD19085557891 & 19085555555

You need to use Multilink PPP to make a call using two ISDN

B channels with the Netopia ISDN Modem. See the “Using Multilink

PPP” section later in this chapter for details.