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<h1>Message file details</h1>
<h2>Introduction</h2>
Since version 1.6 dsdccx has the capability of sending regularly the traffic status messages to a file using the `-M` option. The `-m` option specifies the rate at which the information is polled and written to file. It is expressed in seconds at a 48 kS/s rate and has a minimum value of 0.1s. At 0.1s it will poll everu 48000*0.1 = 4800 samples.
The polling period will match an actual time interval only during live operation when samples are fed from a real device although buffering might alter this.
<h2>File format</h2>
There is one line per polling occurrence with a fixed format depending on the protocol. For all protocols the line starts with a timestamp and a protocol identifier. Details by protocol are given next.
<h3>DMR</h3>
```
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8
0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....
1484364328.297:DMR>Sta: BS S1: /04 IDL S2: *04 VLC 02222223>G00019535
-------------- --- -- -- .-- --- -------- .-------- -- .-- --- -------- .--------
1 2 3 4 56 7 8 9A 4 56 7 8 9A
```
- **1**: Timestamp in seconds since epoch with millisecond precision
- **2**: Protocol indicator: `DMR`
- **3**: Station type:
- MS: Mobile station
- BS: Base station
- **4**: Slot #1 (S1) or slot #2 (S2) follows with the same information for each slot
- **5**: Channel status derived from CACH information:
- *: Busy. That is the AT bit on the opposite channel is on.
- .: Clear. That is the AT bit on the opposite channel is off.
- /: The CACH could not be decoded and information is missing
- **6**: Color code from 0 to 15 or `--` if color code could no be decoded
- **7**: Slot type:
- VOX: Voice block
- IDL: Data idle block
- VLC: Voice link control block
- TLC: Terminator with Link Control information data block
- CSB: CSBK (Control Signalling BlocK) data block
- MBH: Multi Block Control block header data block
- MBC: Multi Block Control block continuation data block
- DAH: Data header block
- D12: 1/2 rate data block
- D34: 3/4 rate data block
- DB1: Full rate data block
- USB: Unified Single Block Data
- RES: Reserved data block
- UNK: unknown data type or could not be decoded
- **8**: Source address (24 bits) as defined in the DMR ETSI standard
- **9**: Address type indicator:
- G: Ggroup address
- U: Unit (individual) address
- **A**: Target address (24 bits) as defined in the DMR ETSI standard
<h3>dPMR</h3>
```
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8
0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....
1484364141.663:DPM>VO CC: 1757 OI: 00000302 CI: 00014653
-------------- --- -- ---- -------- --------
1 2 3 4 5 6
```
- **1**: Timestamp in seconds since epoch with millisecond precision
- **2**: Protocol indicator: `DMR`
- **3**: dPMR frame type:
- --: Undefined
- HD: Header of FS1 type
- PY: Payload frame of a still undetermined type
- VO: Voice frame
- VD: Voice and data frame
- D1: Data without FEC frame
- D2: Data with FEC frame
- XS: Extended search: looking for a new payload frame when out of sequence
- EN: End frame
- **4**: Colour code in decimal (12 bits)
- **5**: Own ID. Sender's identification code in decimal (24 bits).
- **6**: Called ID. Called party's identification code in decimal (24 bits).
<h3>D-Star</h3>
```
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9
0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....
1484364098.148:DST>F1NSR /ID51>CQCQCQ |F1ZIL B>F1ZIL B|YANNICK ST RAPHAEL | :000/00000.0
-------------- --- -------- ---- -------- -------- -------- -------------------- ------ --- -------
1 2 3 4 5 6 7 8 9 A B
```
- **1**: Timestamp in seconds since epoch with millisecond precision
- **2**: Protocol indicator: `DST`
- **3**: Origin callsign (MY)
- **4**: Origin informative suffix
- **5**: Destination callsign (YOUR or UR)
- **6**: Origin repeater callsign (RPT1)
- **7**: Destination repeater callsign (RPT2)
- **8**: Informative text
- **9**: 6 character locator a.k.a. Maidenhead locator
- **A**: Bearing to the origin station when locator is defined and own position is specified (options -P and -Q)
- **B**: Distance to the origin station when locator is defined and own position is specified (options -P and -Q)
<h3>YSF (Yaesu System Fusion)</h3>
```
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8
0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....
1484365141.179:YSF>C V2 GC 0:7 WL000|F6FCE >**********|F5ZOO-R1 >F5ZOO-R1 |E55vv
-------------- --- . -- -- . . ..--- ---------- ---------- ---------- ---------- -----
1 2 3 4 5 6 7 89A B C D E F
```
- **1**: Timestamp in seconds since epoch with millisecond precision
- **2**: Protocol indicator: `YSF`
- **3**: Frame type:
- H: header
- C: channel
- T: terminator
- S: test
- **4**: Channel type:
- V1: voice/data mode 1
- V2: voice/data mode 2 (as in the example)
- VF: voice full rate
- DF: data full rate
- **5**: Call mode:
- GC: group call
- RI: radio ID
- RE: reserved
- IN: individual call
- **6**: Total number of blocks
- **7**: Total number of frames
- **8**: Bandwidth mode:
- N: narrow band mode
- W: wide band mode
- **9**: Path type:
- I: Internet path
- L: local path
- **A**: Squelch code (0..127) or dashes `---` if the YSF squelch is not active
- **B**: Origin callsign
- **C**: Destination callsign. It is filled with stars `*` when call is made to all stations (similar to the CQCQCQ in D-Star)
- **D**: Origin repeater callsign
- **E**: Destination repeater callsign
- **F**: Originator radio ID. This is the unique character string assigned to the device by the manufacturer.
<h3>Undefined</h3>
When the system has not acquired synchronization a dummy line with `XXX` as protocol indicator is recorded:
```
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8
0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....
1484365141.179:XXX>
-------------- ---
1 2
```
- **1**: Timestamp in seconds since epoch with millisecond precision
- **2**: Protocol indicator: `XXX`
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