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About Activation
To establish data communications in a P25 Trunking system, SNDCP Activation must be completed in advance for the
system (FNE). The transceiver executes SNDCP Activation for the system at the following timings:
0
After the execution of the P25 Trunking Full Registration for the system.
0
When an Activation response message has not been received from the system at the time of starting the data
transmission.
0
When the transceiver receives an Activation Command message from the system.
When the SNDCP Activation is completed, data communications to a P25 Trunking system will be enabled.
About the data communications behavior during the Scan
When the transceiver is scanning, the scan is stopped on the Revert Channel and then data communications start. After
that, the transceiver migrates from the data channel to the control channel and then resumes the scan after the time
configured in Key Delay Time elapses.
Also, while the Limited Talkgroup Scan is being executed, data communications cannot be established.
Encryption status during data transmission
The Encryption status is as below during data transmission:
Packet Data Key List No.
is the Encryption Key used in Packet
Data communications.
Table 2-16 Encryption Status During Data Transmission
Configuration using KPG-D1/
D1N
Existence of the Encryption Key Configured
in the Packet Data Key List No.
Encryption Status
Packet Data Key List No.
GPS
OTAR
Enabled
Yes
Secure
Clear
No
Not sent
*1
Clear
Disabled
-
Clear
Clear
*1
If sending the GPS position data is tried by pressing the
Send the GPS Data
key, the Period Key Fail Alert Tone (6
beeps) sounds from the transceiver and “<<KEY FAIL>>” appears on the display. If sending the GPS position data is
tried by using anything other than the manual transmission with the
Send the GPS data
key, such as Auto GPS Report,
no warning tone sounds from the transceiver and the display does not change.
Behavior when receiving the encrypted data
If an Encryption Key is loaded from a Key Loader and the transceiver receives encrypted data, the transceiver behaves as
below regardless of the configuration in
Packet Data Key List No.
:
0
If the Key ID and Key Data match the Key ID and Key Data configured in the Multi-Key List, the transceiver receives
the data.
0
If the Key ID matches the Key ID configured in the Multi-Key List and the Key Data does not match the Key Data
configured in the Multi-Key List, the transceiver does not receive the data.
0
If the Key ID does not match the Key ID configured in the Multi-Key List, the transceiver does not receive the data
regardless of whether the Key Data matches or not.
Configuration using KPG-D1/ D1N
0
Configuring
SNDCP
to be enabled or disabled (
Transceiver Settings > Personal > Personal Features > P25
Trunking > Packet Data)
0
Configuring
IP Address
(
Transceiver Settings > P25 > P25 Information > Packet Data)
0
Configuring
Dynamic IP Address
to be enabled or disabled (
Transceiver Settings > P25 > P25 Information >
Packet Data)
0
Configuring
SNDCP Version
(
Transceiver Settings > Personal > Personal Features > P25 Trunking > Packet
Data)
2 P25 TRUNKING SYSTEM
2.17 SNDCP
P25 FUNC (K)/Ver 2.20
135