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+# GPSACP message
+
+GPSACP messages are defined in [WTP - SCG Reference Points](https://www.hochbahn.de/hochbahn/wcm/connect/de/1d8945fd-174c-447a-85a5-4a8424406b5a/Lieferung%2Bvon%2BWLAN%2BRoutern%2BAB%2B17.12.2016.pdf?MOD=AJPERES&CACHEID=ROOTWORKSPACE.Z18_JH8I1JC0L05M10AEB6TSP430A1-1d8945fd-174c-447a-85a5-4a8424406b5a-lLovXv0) can be sent within WTP Event Requests.
+
+## Definition GPS Last Acquired Position
+The GPS Last Acquired Position contains the output of the AT$GPSACP command from an WWAN Modem.
+
+### Format
+
+```
+0                   1                   2                   3
+0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         Timestamp                             |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|    WWAN Id    |       GPSACP ....
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+```
+
+**Vendor Id** 18681 (Travelping GmbH)
+
+**Type** 15
+
+**Length** >= 5
+
+**Timestamp** The WTP’s time when the meassurment was recorded
+
+**WWAN Id** WWAN Interface Id, used to differentiate between multiple WWAN interfaces, MUST be between
+one (1) and 16.
+
+**GPSACP** The full output (including the starting $GPSACP) of the AT$GPSACP command the WWAN Interface:
+
+```
+$GPSACP:<UTC>,<latitude>,<longitude>,<hdop>,<altitude>,<fix>,<cog>,<spkm>,<spkn>,<date>,<nsat> 
+
+<UTC>: HHMMSS
+  HH: Hour of day (00..23)
+  MM: Minute (00..59)
+  SS: Second (00..60)
+<latitude>: ddmm.mmmmD
+  dd: Degree (00..90)
+  mm.mmmm: Minutes with decimal fraction (00.0000 .. 59.9999)
+  D: Direction (N|S)
+<longitude>: dddmm.mmmmD
+  dd: Degree (00..180)
+  mm.mmmm: Minutes with decimal fraction (00.0000 .. 59.9999)
+  D: Direction (W|E)
+<hdop>: xx.x
+  xx.x: Horizontal dilution of precision in m (00.0..99.9)
+<altitude>: xxxx.x
+  xxxx.x: Altitude above sea level in m (0000.0..9999.9) - Empty value for negative values.
+<fix>: x
+  x: Fix status (0: No fix, 1: 2D, 2: 3D)
+<cog>: xxx.x
+  xxx.x: Course over ground (000.0 .. 359.9)
+<spkm>: xxx.x
+  xxx.x: Horizontal speed in km/h (000.0 .. 999.9)
+<spkn>: xxx.x
+  xxx.x: Horizontal speed in knots (000.0 .. 999.9)
+<date>: ddmmyy
+  dd: Day (01 .. 31)
+  mm: Month (01 .. 12)
+  yy: Year (00 .. 99)
+<nsat>: xx
+  xx: Number of satallites in view (00 .. 99)
+```