➣
When the channel in which the OTAR function
Active Keyset selection
APCO P25 Mode Operation
When the channel in which the OTAR function
is enabled is selected, the transceiver
automatically attempts registration to the
OTAR system by transmitting a Key
Management Message (KMM) to KMF. Various
other commands are exchanged between KMF
and a transceiver, other than above.
▒
Not available on Non-display model.
Active Keyset selection
This function allows you to select the Active Keyset
that is stored in the transceiver. The keyset
structures a group of keys. By changing the keyset,
the group of keys will be automatically switched to
another group.
1
Push [Keyset] to enter the keyset selection mode.
Th l t d k
t
(“KEYSET1”
Registration to the OTAR system
➥
Push [Zone], then push [CH Up] or [CH Down],
or rotate [CH Up/Down], to select the channel
in which the OTAR function is enabled.
After selecting the channel, the transceiver
automatically attempts registration to the
OTAR system by transmitting a KMM
‘R i
i ’ d
KMF
• The selected keyset name (“KEYSET1” or
“KEYSET2”) appears.
2
Push [CH Up] or [CH Down], or rotate
[CH Up/Down], to select the desired keyset.
3
Push and hold [Keyset] for 1 sec to set the
selected keyset.
4
Push [Keyset] to exit the keyset selection mode.
‘Registration’ command to KMF.
▒
NOTE: There are 2 types of KMM— Standard
▒
and Packet. If the pre-programmed KMM type
▒
is not matched to the system which the
▒
transceiver attempts to register with, the
▒
registration attempt may fail. In that case,
▒
the transceiver’s KMM type should be changed
▒
▒
to another type.
Deregistration from the OTAR system
➥
Push [CH Up] or [CH Down], or rotate
[CH Up/Down], to exit the channel in which the
OTAR function is enabled. After exiting the
channel, the transceiver automatically attempts
deregistration from the OTAR system by
deregistration from the OTAR system by
transmitting a KMM ‘Deregistration’ command
to KMF.
Rekey request function
Normally, the encryption keys are managed and
securely changed by KMF over the air without
receiving a Rekey request. If needed, the
transceiver can send a Rekey request to the KMF
to perform the rekey operation.
1
Push and hold [Rekey] for 1 sec to send a KMM
‘Hello’ command to KMF for a Rekey request.
• “REQUEST REKE” appears.
2
After receiving a Rekey request from the
transceiver, KMF performs the rekey operation.
51
3
When the rekey operation is successful,
“REQUEST REKE” disappears.
• If the rekey operation fails, “FAILED” appears.
