Specifications

ISU AT Command Reference Phase I AT Commands
Iridium Proprietary Version 2.45
20 June 2011 17
5.7 D - Dial (Initial implementation; revised in Phase III)
Dial a data call number. The dial command causes the ISU to enter originate mode and act as an auto
dialer for connection to other modems. 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.
Direct dial from phonebook not implemented in models 9500 with INC0620, 9520 with
RAC0620, or 9521 with RAC0620 .
Any character received from the DTE during the call establishment phase will cause the call attempted to
be terminated.
5.7.1 Direct Dial From Phonebook (Initial implementation; revised in Phase III)
The ISU and SIM contain phonebooks which have a phone number and an alphanumeric field for each
phonebook entry location. The use of V.25ter dialing command ensures that direct dialing from phone
memory and SIM phonebook is possible through ordinary communications software which just gives the
phone number field to be filled and then use the D command to originate the call. Available memories may
be queried with Select Phonebook Storage test command +CPBS=?, and location range for example with
Read Phonebook Entries test command +CPBR=?.
Execute commands:
D><str>
Originate call to phone number which corresponding alphanumeric field is <str> (if possible, all available
memories should be searched for the correct entry). <str> is of string type value and should enclosed by ““
(e.g., “John”).
D> mem<n>
Originate call to phone number in memory mem entry location <n> (available memories may be queried
with Select Phonebook Storage test command +CPBS=?).
mem can be one of the following:
FD SIM fixed dialing phonebook
LD Last ten calls dialed phonebook
ME Phone memory
MT Combined phone and SIM phonebook locations
SM SIM phonebook
D><n>
Originate call to phone number in entry location <n> (the command Select Phonebook Memory Storage
+CPBS setting determines which phonebook storage is used).