Specifications

ISU AT Command Reference Phase VII AT Commands
Iridium Proprietary Version 2.45
20 June 2011 90
11 Phase VII AT Commands
The following AT commands are only supported by the 9555 Handset, and unless specified
otherwise, by the 9522B LBT. These will be supported in future handsets and LBTs but are NOT
supported in earlier products.
11.1 +ADJANT – User Antenna Adjustment Required
Exec Command: none
Unsolicited Announcement:
+ADJANT:<adj_required>
where:
<adj_required>:
The adj_required flag indicates whether the user needs to adjust the L-band antenna position to improve
reception.
0 Adjustment no longer required.
1 Adjustment required.
The “+ADJANT:1” message will be sent up to three times, at 5-second intervals, if Layer 1 is attempting to
acquire an L-band bearer but is unable to receive the BCCH transmission from the SV, whether the attempt
is due to an MT call (prior to RING indication), MO call, or Location Update etc.
It is an indication that the user needs to deploy the antenna or adjust it to a better orientation/location.
Note that if the acquisition fails or succeeds, there will in most cases be a subsequent “+ADJANT:0”, but
this is not guaranteed in all cases.
This message is used internally to the 9555 Handset, and is not intended for use by end users. This
notification is not available on the 9522B LBT.
11.2 +WANTST, +ANTST – Antenna status
Exec Command:
+WANTST
This command causes the DCE’s internal state-change history to be deleted, so that the next time it polls
the antenna status, a +ANTST:<ant_status> unsolicited message will be generated regardless of state.
A result code (normally “OK”) will be returned immediately, and the +ANTST:<ant_status> message will
follow later (potentially much later – see below).
Unsolicited Announcement:
+ANTST:<ant_status>
where:
<ant_status>:
0 Built-in antenna is stowed.
1 Built-in antenna is deployed, or an external antenna (via docking cradle) is connected,
and the built-in antenna is disconnected so its stowed/deployed status is irrelevant.
The +ANTST:<ant status> message will be sent whenever internal polling indicates that the antenna status