Any info about Failsoft mode

[yakko]

Hi all,

I've reading the standard and I haven't found anything about failsoft mode. I think this mode was released by motorola and the rest of manufactures have copied part of the this way of working

I'd like to know what TSBK are sent in that mode. Has anyone log any trunking system working in failsoft mode.

I think is similar to a conventional mode but with a TSBK continuosly tranmitted to the terminals hook in that channel from a pool of possible failsoft channels, is that true?

Thanks,

 

[ecps92]

Pretty much, yup
http://wiki.radioreference.com/index.php/Failsoft

Hi all,

I've reading the standard and I haven't found anything about failsoft mode. I think this mode was released by motorola and the rest of manufactures have copied part of the this way of working

I'd like to know what TSBK are sent in that mode. Has anyone log any trunking system working in failsoft mode.

I think is similar to a conventional mode but with a TSBK continuosly tranmitted to the terminals hook in that channel from a pool of possible failsoft channels, is that true?

Thanks,

 

[zz0468]

I think this mode was released by motorola and the rest of manufactures have copied part of the this way of working

EDACS has far more versatility in failsoft, with several layers of protection available before it has to resort to a conventional mode. In 15 years of working with an EDACS system, I never once saw it in non-trunking failsoft. So, the statement that other manufacturers copied Motorola's methodology isn't quite right. I believe it was actually a requirement of the original APCO 16 specification.

 

[WayneH]

I think is similar to a conventional mode but with a TSBK continuosly tranmitted to the terminals hook in that channel from a pool of possible failsoft channels, is that true?

Yes, it's true. There's low-speed, sub-audible data sent hence the continuously keyed up transmitter. It only tells the mobiles that the channel is in Failsoft. Once the radios realize this they switch to the preprogrammed FS channel in their programming.

 

[ecps92]

and to add to the Confussion

each T/G in the System "CAN-BE" set to have a FailSoft Frequency or NOT, so each T/G might have it's own or they all get lumped on one Frequency, all depends on the Radio Tech who designed the System and how many Frequencies are available in each ZONE.

Also remember if this occurs SmartZone is out the window with the dish-water and you won't hear
adjacent Zone Talk-Groups

Yes, it's true. There's low-speed, sub-audible data sent hence the continuously keyed up transmitter. It only tells the mobiles that the channel is in Failsoft. Once the radios realize this they switch to the preprogrammed FS channel in their programming.

 

[yakko]

What kind of subaudible tone in failsoft?

But what kind of subaudible tone? is it a DCS?

Is different the subaudible in smartzone from the rest of the P-25 systems?

Regards,

 

[WayneH]

But what kind of subaudible tone? is it a DCS?

No, you're over-thinking it. Think of LTR and how it works. The same bit transmission method.

I'm told the word is 0xA510C with a flush bit.