o
[<APN>]
The current Access Point Name in use by a GSM TTU.
GPS:
o
[Antenna <Short/Open/Off>]:
This field, if present, indicates a problem with the TTU
’s GPS antenna. A value of Short indicates that
the antenna cable has likely been crushed. A value of Open indicates that the antenna cable is either
cut or disconnected. A value of Off indicates that the TTU
’ GPS receiver is off.
o
[No Time Sync]:
If this field is present, it indicates that the TTU
’s GPS receiver has not been able to find even a single
GPS satellite. This would likely been seen in conjunction with the above antenna error, or if the TTU
GPS antenna is otherwise blocked.
o
[<FixStatus> <Sat Count>]:
If these fields are present it indicates that the TTU has, or had a valid GPS solution. The <Sat Count>
field indicates how many GPS satellites are currently in use by the TTU. The <FixStatus> field
indicates the type of fix. The Fix Status types are detailed in the
INP:
o
<input states>:
This field details the current state of each of the TTU
’s discreet inputs. This field is always 8 characters
long. The left most character represents the state of input 7 where the right most represents the state
of input 0 (i.e. the ignition). A value of 1 indicates the input is currently in the high state. A value of 0
indicates it is currently in the low state.
o
<vehicle voltage>:
This field will contain the current reading of the TTU
’s internal A/D. This will be the supply voltage
provided to the TTU in mV.
MID:
o
<mobile ID>:
This will be the current mobile ID in use by the TTU.
o
<mobile ID type>:
This will be the type of Mobile ID in use by the TTU. The available types are, Off, ESN, IMEI, IMSI,
USER, MIN and IP ADDRESS.