Specifications

ISU AT Command Reference Phase III AT Commands
Iridium Proprietary Version 2.45
20 June 2011 50
7 Phase III AT Commands
7.1 A - Answer (Revised)
Answer immediately. This causes the ISU to answer the incoming data or voice call.
7.2 D - Dial (Revised)
Dial a data or voice call number. The dial command causes the ISU to enter originate mode and act as an
auto dialer for connection to other modems or voice lines. The usual format is
ATDnx..x where n is a Dial
Modifier and x is a number. The following are valid numbers: 0123456789*#ABC. Dial modifiers are
used to alter the manner in which the ISU dials.
L Redial last number.
P Use pulse dialing.
No action, compatibility only.
T Use tone dialing.
No action, compatibility only.
+ International dialing prefix. Allows the international access code to be omitted from dial
string.
> Direct dial from phonebook locations. See subsection below for further details.
; Start up a voice call. This modifier should be given after the dialing digits (or modifiers).
Any character received from the DTE during the call establishment phase will cause the call attempted to
be terminated.