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dapnetprotocol
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| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung Nächste Überarbeitung Beide Seiten der Revision | ||
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dapnetprotocol [2018/10/17 11:20] df2et |
dapnetprotocol [2018/10/17 11:27] df2et |
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| ====== Protocol for Connection of Transmitters ====== | ====== Protocol for Connection of Transmitters ====== | ||
| - | Connection for transmitters is based on a simple cleartext TCP protocol ((Described here: https://www.afu.rwth-aachen.de/images/vortraege/Wilke_FunkrufTX_Weinheim2012.pdf)). A tcpdump of a connection is shown below. Comments are inserted in italic where applicable. \\ | + | Connection for transmitters is based on a simple cleartext TCP protocol ((Described here (Geman only): https://www.afu.rwth-aachen.de/images/vortraege/Wilke_FunkrufTX_Weinheim2012.pdf)). A tcpdump of a connection is shown below. Comments are inserted in italic where applicable. \\ |
| <color #ed1c24>Red color denotes what is sent to the master.</color> \\ | <color #ed1c24>Red color denotes what is sent to the master.</color> \\ | ||
| <color #7092be>Blue color shows answers received from the master.</color> | <color #7092be>Blue color shows answers received from the master.</color> | ||
| Zeile 59: | Zeile 59: | ||
| //This is the first call. The master sent "#00" which we have to confirm by increasing by one -> "#:01 +". The rest of the line is as follows (values separated by a ":"): // | //This is the first call. The master sent "#00" which we have to confirm by increasing by one -> "#:01 +". The rest of the line is as follows (values separated by a ":"): // | ||
| * ''6'' //is the message type. 6 is a text message transmission and 5 is a time sync message (see further below for an example).// | * ''6'' //is the message type. 6 is a text message transmission and 5 is a time sync message (see further below for an example).// | ||
| - | * ''1'' //is blabla// | + | * ''1'' //indicates the POCSAG tranmission speed to use ( 1 = 1200 bit/s).// |
| * ''3EC'' //is the RIC/CAP code that the message is intended for. It is the hexadecimal representation of the decimal value 1004 in this case.// | * ''3EC'' //is the RIC/CAP code that the message is intended for. It is the hexadecimal representation of the decimal value 1004 in this case.// | ||
| * ''3'' //is the function bit or sub RIC that the message is addressed to.// | * ''3'' //is the function bit or sub RIC that the message is addressed to.// | ||
dapnetprotocol.txt · Zuletzt geändert: 2018/11/15 14:44 von df2et
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