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Tetra gssi wildcard

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240871

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Joined
Mar 19, 2004
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98
Location
Sunny Isles Beach, Florida
Hi - is there a GSSI id wildcard on TETRA DMO - a talkgroup id that opens all communication no matter what the id is?
I know there is a P25 NAC wildcard of F7E - so I hope and believe there is one on TETRA too - I hope someone can help me out there.
 

Raccon

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Mar 1, 2005
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Programming no GSSI or 16777215 (which you already know ;) ) makes the channel open to other radios. Obviously this does not work in reverse, i.e. you can't listen to any GSSI by programming some other, "magic" GSSI, as that would defeat the purpose of having a GSSI in the first place.
 

Raccon

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Joined
Mar 1, 2005
Messages
408
By programming no GSSI you mean 0?
Does 0 and 16777215 the same when entered as a GSSI?
0 is reserved for special purposes, just as 16777215 (and others) is. So no GSSI means leaving the field blank or inserting -1, or whatever the manufacturer of the radio chose as filler.

I think there is a reverse GSSi - it would be nice to have it...
No there isn't - if there were it would render the entire system / communication insecure. Remember, TETRA is an open standard, so anyone can read the specifications.

Any luck with use 16777215 for listen all traffic opr transmit to all radios?
Works in DMO only if the transmitting radio uses that GSSI.
 
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