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P25 TDMA control channel

tweiss3

Is it time for Coffee?
Premium Subscriber
Joined
Apr 24, 2020
Messages
416
Location
Ohio
DSDPlus FastLane will show the control channel in its channel window with 2 channels and should say TDMA.

I'm more worried about P25 LLA which is shipping with subscriber equipment. It's only a matter of time.

What is LLA you ask?

I'd like to understand what your problem with LLA is? It doesn't mean encryption, but it does add a 2nd layer of authentication to use the system, listening remains unaffected.
 

devicelab

Whacker Extraordinaire
Joined
Jul 18, 2016
Messages
914
Location
Bothell, WA
I'd like to understand what your problem with LLA is? It doesn't mean encryption, but it does add a 2nd layer of authentication to use the system, listening remains unaffected.
Sorry wrong acronym. I saw the URL and assumed it was the same. LLE is the encryption standard they're working on. It was approved late last year IIRC.
 

kv5e

Member
Premium Subscriber
Joined
Dec 19, 2002
Messages
176
Location
Texas
LLE encrypts the P25 control plane and obfuscates traffic analysis of talkgroups, NID, and other components that are decodable now even if the voice or data APDU is encrypted.
 

scannerboy02

Member
Premium Subscriber
Joined
Nov 16, 2004
Messages
1,733
LLE encrypts the P25 control plane and obfuscates traffic analysis of talkgroups, NID, and other components that are decodable now even if the voice or data APDU is encrypted.
Nothing like building a digital radio standard so everyone can communicate with each other and then making it require a special code to communicate with each other. It only took 20 years to forget about that September morning.
 
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