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.
