DSD+ Question

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AK4FD

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Hey folks, I am curious of something... I recently upgraded to DSD+ FastLane, and I am still a new user at-that. During my decoding of P25 Trunking systems I notice alot of TSDU Control Channel jargon being logged. A few things I can kinda figure out of my own like RFSS_STS_BCST and GRP_V_CH_GRANT_UPDT, however I was wondering if there was a website or listing as to what each of those data commands/descriptors means. I've programmed scanners and radios for many years now but never delved into the specifics of Control Channel data. Below is an example of the log file that I have decoded... I would appreciate any insight, and thank you in advance!

SNDCP_CHN_ANN_EXP DSO=00 TXch=none RXch=none DAC=0001
Sync:+P25p1 NAC:1F0 TSDU
Opcode=9 MFID=90 12 C0 00 00 00 00 00 00
SYNC_BCST US=0 IST=1 MMU=0 MC=0 VL=1 LTO=-5h 2004/05/10 20:02 uSlot=2630
RFSS_STS_BCST SysID=1FC LRA=0 RFSS=2 Site=2 CC=774.73125 SC=70
Sync:+P25p1 NAC:1F0 TSDU
GRP_V_CH_GRANT_UPDT TG=25009 ch=772.70625 / TG=9544 ch=771.33125
NET_STS_BCST WACN ID=BEE00 SysID=1FC LRA=0 CC=774.73125 SC=70
IDEN_UP ID=1 Base=762.00625 Offset=+30 Spacing=6.25 BW=12.5
Sync:+P25p1 NAC:1F0 TSDU
SCCB RFSS=2 Site=2 [ch=773.45625 SSC=04] [ch=773.45625 SSC=04]
ADJ_STS_BCST CFVA=3 SysID=1FC LRA=0 RFSS=2 Site=63 CC=853.8875 SC=70
Opcode=5 MFID=90 40 00 00 00 00 00 00 00
Sync:+P25p1 NAC:1F0 TSDU
SNDCP_CHN_ANN_EXP DSO=00 TXch=none RXch=none DAC=0001
Opcode=9 MFID=90 0C 80 00 00 00 00 00 00
SYNC_BCST US=0 IST=1 MMU=0 MC=0 VL=1 LTO=-5h 2004/05/10 20:02 uSlot=2660
Sync:+P25p1 NAC:1F0 TSDU
RFSS_STS_BCST SysID=1FC LRA=0 RFSS=2 Site=2 CC=774.73125 SC=70
GRP_V_CH_GRANT_UPDT TG=25009 ch=772.70625 / TG=9544 ch=771.33125
NET_STS_BCST WACN ID=BEE00 SysID=1FC LRA=0 CC=774.73125 SC=70
Sync:+P25p1 NAC:1F0 TSDU
IDEN_UP ID=0 Base=851.00625 Offset=-45 Spacing=6.25 BW=12.5
SCCB RFSS=2 Site=2 [ch=773.45625 SSC=04] [ch=773.45625 SSC=04]
ADJ_STS_BCST CFVA=3 SysID=1FC LRA=0 RFSS=2 Site=4 CC=773.83125 SC=70
Sync:+P25p1 NAC:1F0 TSDU
Opcode=5 MFID=90 40 00 00 00 00 00 00 00
SNDCP_CHN_ANN_EXP DSO=00 TXch=none RXch=none DAC=0001
Opcode=9 MFID=90 0C 80 00 00 00 00 00 00
Sync:+P25p1 NAC:1F0 TSDU SYNC_BCST US=0 IST=1 MMU=0 MC=0 VL=1 LTO=-5h 2004/05/10 20:02 uSlot=2700
RFSS_STS_BCST SysID=1FC LRA=0 RFSS=2 Site=2 CC=774.73125 SC=70
GRP_V_CH_GRANT_UPDT TG=25009 ch=772.70625 / TG=9544 ch=771.33125
Sync:+P25p1 NAC:1F0 TSDU
NET_STS_BCST WACN ID=BEE00 SysID=1FC LRA=0 CC=774.73125 SC=70
IDEN_UP ID=1 Base=762.00625 Offset=+30 Spacing=6.25 BW=12.5
GRP_V_CH_GRANT PRI4 TG=9544 RID=354999 ch=771.33125
Sync:+P25p1 NAC:1F0 TSDU
SCCB RFSS=2 Site=2 [ch=773.45625 SSC=04] [ch=773.45625 SSC=04]

•• David
 
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