CCDump for MotoTRBO

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TomChapman

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Is there a scanner model (Whistler or other brand) that has a "CC Dump" feature that provides control channel data for a Motorola TRBO system.

Where can I get documents that describe the control channel for MotoTRBO? Is that something that is available?
 

EricCottrell

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Hello,

The Whistler WS1080/WS1088/WS1095/WS1098 with DMR firmware and the TRX-1/TRX-2 support it according to the CC Dump Protol Specification that used to be on their website. The document was pulled when they updated their website. This is their description of the output.

Code:
The following describes the CCDump message format when used on trunked radio systems:
<Type>:T<xxxxxxxx>[:S<yyyy>][:CC<zz>][:<SubType>]:<CC Data>[:<Decode Data>]

<Type>: One of the following three ASCII character combinations:
P25: Project 25 control channel or voice channel data
MOT: Motorola 3600 control channel data
LTR: LTR low speed data
ED : EDACS control channel data (both Wide and Narrow)

<xxxxxxxx>: The hexadecimal representation of the TSYS's File System ID (for WXS and WXT, this is the current WX Chan 0000-0006)
<yyyy>: The site number within the current TSYS data. For P25 Conventional voice, this will be “0000”. This field is not present when the <Type> field is WXS or WXT.
<zz>: The control channel within the site being decoded. This field is not present when the <Type> field is WXS or WXT.
<SubType>: The P25 packet subtype. This is only used and present when the <Type> is set to P25.
<CC data>: The "osw" from the CC. The format depends on the system type.
<Decode Data>: If present, how the scanner decoded the data.

DMR: The format of DMR data depends on the SubType field. Each SubType field is listed below.

LC(s): This data sub type contains DMR Link Control messages in the following format. The (s) value indicates the slot (1 or 2) to which the message applies.
<X1><X2><X3><X4><X5><X6><X7><X8><X9> where <X1> - <X9> are 9 2-digit hexadecimal bytes from the last message received. Each item
is separated by a space character.

SLC: This data sub type contains DMR Short Link Control messages in the following format.
<X1><X2><X3><X4> where <X1> - <X4> are 4 2-digit hexadecimal bytes from the last message received. Each item is separated by a space character.

I am not aware of any software that will take the output and decode it like P25Com and other programs. I have not tried tuning into a control channel and see if the scanner decodes any control channel information. It could just dump out the raw data bytes and the PC software has to decode it.

73 Eric
 
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