More Decoded
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Cort Buffington
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f4c7620530
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21601f82f1
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PARTS OF THE PACKET THAT ARE NOT KNOWN ARE WRAPPED WITH STARS -- LIKE THIS **00.00.AC**, MEANS WE DONT KNOW WHAT THAT IS
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VOICE HEADER 1: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.dd 3b.01 3b.eb.3c.e0 00.00.00.00 | 01 **80000a800a0060000000** 00.00.02 2f.7c.ca **92af7000113532**
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VOICE HEADER 2: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.02 3b.eb.3e.c0 00.00.00.00 | 01 **80000a800a0060000000** 00.00.02 2f.7c.ca **92af7000113530**
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VOICE HEADER 3: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.03 3b.eb.40.a0 00.00.00.00 | 01 **80000a800a0060000000** 00.00.02 2f.7c.ca **92af7000113531**
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VOICE HEADER 1: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.dd 3b.01 3b.eb.3c.e0 00.00.00.00 | 01 80 00.0a 80 0a 00.60 00 00 00 00.00.02 2f.7c.ca 92.af.70 **00113532**
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VOICE HEADER 2: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.02 3b.eb.3e.c0 00.00.00.00 | 01 80 00.0a 80 0a 00.60 00 00 00 00.00.02 2f.7c.ca 92.af.70 **00113530**
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VOICE HEADER 3: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.03 3b.eb.40.a0 00.00.00.00 | 01 80 00.0a 80 0a 00.60 00 00 00 00.00.02 2f.7c.ca 92.af.70 **00113531**
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VOICE BURST A: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.04 3b.eb.42.80 00.00.00.00 | 8a 14 **40** f8.01.a9.9f.8c.e0.be.00.6a.67.e3.38.2f.80.1a.99.f8.ce.08
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VOICE BURST B: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.05 3b.eb.44.60 00.00.00.00 | 8a 19 **06** f8.01.a9.9f.8c.e0.be.00.6a.67.e3.38.2f.80.1a.99.f8.ce.08 **0505060612**
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VOICE BURST C: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.06 3b.eb.46.40 00.00.00.00 | 8a 19 **06** f8.01.a9.9f.8c.e0.be.00.6a.67.e3.38.2f.80.1a.99.f8.ce.08 **0905060516**
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VOICE BURST D: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.07 3b.eb.48.20 00.00.00.00 | 8a 19 **06** 98.02.b9.4f.a4.d3.bb.b7.96.c7.83.d8.ee.81.19.41.e4.4a.68 **0f05060f16**
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VOICE BURST E: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.08 3b.eb.4a.00 00.00.00.00 | 8a 22 **16** e8.1a.62.d6.8c.6b.ba.06.3d.0d.eb.04.e9.81.dd.f1.04.86.c8 **000a0a0c000000** 00.00.02 2f.7c.ca **14**
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VOICE BURST F: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 20 | 80.5d 3b.09 3b.eb.4b.e0 00.00.00.00 | 8a 19 **06** 98.22.d3.d9.00.b4.a6.05.6d.29.a2.17.a8.82.75.14.f8.10.08 **0000000010**
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VOICE TERMINATOR: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 60 | 80.5e 3e.76 3b.f1.b8.40 00.00.00.00 | 02 80 00.0a 80 0a 00.60 00 00 00 00.00.02 2f.7c.ca **9da07f00123535**
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VOICE TERMINATOR: 80 00.04.bf.fd 08 2f.7c.ca 00.00.02 02 **00.00.30.ac** 60 | 80.5e 3e.76 3b.f1.b8.40 00.00.00.00 | 02 80 00.0a 80 0a 00.60 00 00 00 00.00.02 2f.7c.ca 9d.a0.7f **00123535**
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VOICE HEADER: 54 Bytes (0-53) (sent 3 times, see notes):
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@ -29,10 +29,21 @@ VOICE HEADER: 54 Bytes (0-53) (sent 3 times, see notes):
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RTP_SSID[26-29]
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RTP PAYLOAD:
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BURST_TYPE[30]
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???[31-40]
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RSSI_THRESH_PARITY[31]
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LENGTH_TO_FOLLOW[32-33] (in words)
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RSSI_STATUS[34]
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SLOT_TYPE_SYNC[35]
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DATA_SIZE[36-37] Burst data length in bits; 96/8 = 12.. last 4 bytes ont part of Burst??
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FULL_LC_BYTE1[38] (PF, R, FLCO)
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FULL_LC_FID[39]
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VOICE_PDU_SVC_OPT[40]
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VOICE_PDU_DST[41-43]
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VOICE_PDU_SRC[44-46]
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???[46-53]
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BURST_CRC[47-49]
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VOICE_PDU_DST[41-43]
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VOICE_PDU_SRC[44-46]
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BURST_CRC[47-49] (Reed-Solomon(12,9) if the same as DMR burst, though sample data doesn't come out right)
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???[50-53]
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VOICE BURST A: 52 Bytes (0-51):
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IPSC:
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@ -122,17 +133,18 @@ VOICE TERMINATOR: 54 Bytes (0-53)
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RTP PAYLOAD:
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BURST_TYPE[30]
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RSSI_THRESH_PARITY[31]
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LENGTH_TO_FOLLOW[32-33]
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LENGTH_TO_FOLLOW[32-33] (in words)
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RSSI_STATUS[34]
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SLOT_TYPE_SYNC[35]
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DATA_SIZE[36-37]
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DATA_SIZE[36-37] Burst data length in bits; 96/8 = 12.. last 4 bytes ont part of Burst??
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IPSC_DATA { [38] to (LENGTH_TO_FOLLOW *2)-4 }
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FULL_LC_BYTE1[38]
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FULL_LC_BYTE1[38] (PF, R, FLCO)
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FULL_LC_FID[39]
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VOICE_PDU_SVC_OPT[40]
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VOICE_PDU_DST[41-43]
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VOICE_PDU_SRC[44-46]
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???[47-53]
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BURST_CRC[47-49] (Reed-Solomon(12,9) if the same as DMR burst, though sample data doesn't come out right)
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???[50-53]
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A is a sync burst
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@ -140,7 +152,7 @@ VOICE TERMINATOR: 54 Bytes (0-53)
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E has extra data -- EMB?
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F is the same length as B,C,D, but has a lot of zeros near the end.
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Send a wakeup before starting a call (type 0x85)
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Send a wakeup before starting a call (type 0x85
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IPSC Sequence Number - incremented with each call made
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@ -149,4 +161,6 @@ I've decoded the bits in the RTP header, it's going to be ok to use this recipe.
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RTP Sequence number -- increment with each packet
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RTP timestamp - assumed currently to be 32 bit fixed point number 16bit.16bit seconds. Which would place these packets at 4.8ms apart... seems wrong.
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RTP timestamp - assumed currently to be 32 bit fixed point number 16bit.16bit seconds. Which would place these packets at 4.8ms apart... seems wrong.
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LENGTH_TO_FOLLOW is in 16bit words
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