NAL Research Corporation (451-93156-002A)
45
0
No mute. Play all DTMF tones (default) when pressed or received while in voice
call.
1
Enable mute mode. Mute both pressed or received DTMF tones while in voice call.
Read Command: –MSVLS?
Query the current parameter settings. The response is in the form:
–MSVLS: <mode>
Test Command: –MSVLS=?
List the supported parameter settings. The response is in the form:
–MSVLS: (supported <mode>s)
Note: DTMF generated with the –MSVTS command is never played back locally as tones and is
therefore neither played nor muted under control of the –MSVLS command.
A.8.74 –MSSTM – Request System Time
Exec Command: –MSSTM
Query the latest system time received from the network. The response is the form:
–MSSTM: <system_time>
<system_time> can take one of the following forms:
no network service
The A3LA-RM has not yet received system time from the network.
XXXXXXX
Where XXXXXXXX is the current Iridium system time available
from the network. The system time as received through the
Iridium Air Interface, is a 32 bit integer count of the number of 90
millisecond intervals that have elapsed since the epoch. The return
value is formatted as an ASCII hexadecimal number. The counter
will rollover approximately every 12 years or be changed to
prevent a rollover and as a result should not be used as a time
source for user applications.
Iridium system time epoch: March 8, 2007, 03:50:21.00 GMT. (Note: the original
Iridium system time epoch was June 1, 1996, 00:00:11 GMT, and was reset to the
new epoch in January, 2008).
Iridium system time source: The system time is available and valid only after the A3LA-RM has
registered with the network and has received the Iridium system time from the network. Once
the time is received, the A3LA-RM uses its internal clock to increment the counter. In addition,
at least every 8 hours, or on location update or other event that requires re-registration, the
A3LA-RM will obtain a new system time from the network.
Time localization: None. The system time value is always expressed in GMT time.
Resolution and accuracy: The resolution of the system time is one Iridium frame tick, or 90 ms.
Accuracy as measured by the difference between the time reported and the actual time this
message is sent out of the A3LA-RM’ serial port should not exceed 4 frame ticks (.36 seconds)
and in most cases will be one frame tick (.09 seconds) or less.
A.8.75 –MSGEO – Request Geolocation
Exec Command: –MSGEO
