42
3
APCO P25 MODE OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
D
Registration to the OTAR system
➥
Push
[Zone]
, then push
[CH Up]
or
[CH Down]
, or rotate
[CH Up/Down]
, to select the channel n whch the OTAR
functon s enabled.
After selectng the channel, the transcever automatcally
attempts regstraton to the OTAR system by transmttng a
KMM ‘Regstraton’ command to KMF.
NOTE:
There are 2 types of KMM— Standard and Packet.
If the pre-programmed KMM type s not matched to the
system to whch the transcever attempts to regster wth,
the regstraton attempt may fal. In that case, the trans-
cever’s KMM type should be changed to another type. Ask
your dealer for detals.
D
Deregistration from the OTAR system
➥
Push
[CH Up]
or
[CH Down]
, or rotate
[CH Up/Down]
, to
ext the channel n whch the OTAR functon s enabled.
After extng the channel, the transcever automatcally
attempts deregstraton from the OTAR system by trans-
mttng a KMM ‘Deregstraton’ command to KMF.
D
Rekey request function
Normally, the encrypton keys are managed and securely
changed by KMF over the ar wthout recevng a Rekey
request.
But the transcever can control KMF remotely by sendng a
Rekey request to perform the rekey operaton.
q
Push and hold
[Rekey]
for 1 sec. to send a KMM ‘Hello’
command to KMF for a Rekey request.
• “REQUEST REKE” appears.
w
After recevng a Rekey request from the transcever, KMF
performs the rekey operaton.
e
When the rekey operaton s successful, “REQUEST
REKE” dsappears.
• If the rekey operaton fals, “FAILED” appears.
