DTC
DTC is the port that migrates the transceiver to the Data Zone-Channel/ System-Personality used for data communications.
Normally, establishing a link is required for each data communication when making data communications in an LTR Trunking
system. However, if the system is busy, and a repeater has no available channels, the possibility of failing to send data
becomes higher. ARQ Mode can be used to avoid these problems and unfailingly complete data communications with a
single link.
If ARQ Mode is used, the transceiver does not send the EOT until the transceiver finishes data communications after the
transceiver establishes a link to the repeater. The transceiver retains the linked state using the Hung Up Time configured
for the repeater and then sends or receives the acknowledgment during the Hung Up Time. With this function, the transceiver
is not required to link to a repeater every time to send data, and Air Time can effectively be utilized.
The relationship between the channel where the DTC port is active and the Data Zone-channel is as follows:
Table 11-6 DTC
Current Channel
Data Zone-Channel
Conventional Zone-channel
(Analog)
The transceiver migrates to an analog channel configured for the Data Zone-Channel/
System-Personality (Analog) in the Conventional Zone.
If no Data Zone-Channel/ System-Personality (Analog) is configured, the transceiver
migrates to the data channel (Channel Type = Analog only) with the highest channel
number in the zone.
Conventional Zone-Channel
(NXDN/ P25/ DMR)
The transceiver migrates to an analog channel configured for the Data Zone-Channel/
System-Personality (Analog) in the Conventional Zone.
If no Data Zone-Channel/ System-Personality (Analog) is configured, a Key-entry
Error Tone (1 beep) sounds from the transceiver and the transceiver does not respond
at all.
LTR Trunking Zone- Channel
The transceiver migrates to an analog channel configured for Data Zone-Channel/
System-Personality in the LTR Trunking Zone to start transmitting.
If no Data Zone-Channel/ System-Personality is configured, the transceiver migrates
to the data channel with the highest channel number in the zone.
P25 Trunking Zone-Channel
A Key-entry Error Tone (1 beep) sounds from the transceiver and the transceiver does
not respond at all.
NXDN Trunking Zone-Channel
The transceiver migrates to an analog channel configured for the Data Zone-Channel/
System-Personality (Analog) in the NXDN Trunking Zone.
If no Data Zone-Channel/ System-Personality (Analog) is configured, a Key-entry
Error Tone (1 beep) sounds from the transceiver and the transceiver does not respond
at all.
Note
0
The data channel is not targeted for Revert Channel.
0
When the DTC port goes low level while scanning, the transceiver migrates to a Data Zone-channel in a Revert Zone.
0
If “Data PTT” is assigned to another port, “DTC” cannot be assigned.
0
If “External PTT (Data)” is not assigned to another port, “DTC” cannot be assigned.
Speaker Mute
Speaker Mute
is the port that is used to mute the speaker audio output line.
The transceiver mutes the speaker when the Speaker Mute port goes low level. Only the received audio is muted, and the
control audio, such as a beep tone, is not muted. The transceiver unmutes the speaker when the Speaker Mute port goes
high level.
11 EXTERNAL PORTS
11.2 D-sub 25-pin Connector
Common FUNC (K, F)/Ver 2.20
214
