Dialing And Answering Techniques; Dialing Using The Atd Command - ZyXEL Communications U-336S User Manual

You are now ready to start entering AT commands.
In the terminal window, type:
AT<Enter>
Your modem responds
OK
This confirms that the modem and your computer are communicating
correctly.
To test the telephone line connection issue the manual answer
command.
Type:
ATA<Enter>
Your modem will pick up the phone line, and try to communicate.
Normally, this command is only used to answer an incoming call made
from another modem, thus the high pitched tone you will hear from the
speaker. To abort the operation, press any key, or select "Disconnect"
from the "Call" menu.

Dialing and Answering Techniques

Depending on what communications software you use to make modem
connections, you may not have as much control of how the modem dials
the telephone number. This section shows some useful examples of the
AT commands used for dialing and answering operations. The
command characters specific to each function are shown in bold type.

Dialing using the ATD Command

Touch Tone Dialing:
Pulse Dialing:
ATDT 555 1212
ATDP 555 1212
Basic Modem Operation 15