Iridium Communications, Inc. Information Contained in this Guide
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice
Revision 2.6
Iridium Communications, Inc. Distribution of Guide Restricted
Proprietary & Confidential Information Page 87 of 115 to Product Developers
Only
+WANTST
This command causes the IRIDIUM 9523’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 has changed, or on polling after +WANTST has been received regardless of whether the state has
changed or not. An initial state of ‘stowed’ can be assumed, but +ANTST:<ant status> will be sent shortly
after initialization with the actual status in any case. Internal polling will measure the deployment and
docking detector states before any overall state change is announced.
Note that internal polling occurs on each main receiver receive activity, i.e. once per 90ms during a call,
at least once every 4.3 seconds while monitoring a Ring signal, and as infrequently as once every 2
minutes when performing Ring searches with no signal present.
5.7.114 +PCDA – Pending call drop alert
Exec Command: none
Unsolicited Announcement:
+PCDA:<alert_status>
where:
<alert_status>:
0 Pending call drop alert is inactive
1 Pending call drop alert is active
The +PCDA message will be sent whenever the pending call drop alert status changes.
5.7.115 +DPLCI – DPL Call Indication
Exec Command: none
Unsolicited Announcement:
+DPLCI=<call_state>,<call_type>,<emergency_call>,<telephone_number>
where:
<call_state>:
0 Idle
1 MO Establishing
2 MT Alerting
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