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5. DSC GENERAL MESSAGE CALLING, RECEIVING
5-7
Send unable acknowledge automatically
If the frequency or mode specified by the sending station is one that you cannot use,
an unable acknowledge [CAN’T USE CH] is sent automatically. The [ACK SETTINGS]
menu is set to [AUTO (UNABLE)]. It takes about seven seconds to transmit the call.
Send able/unable acknowledge manually
When an individual call is received with the setting [MANUAL] on the [ACK SET-
TINGS] menu, the audio alarm sounds and a pop-up message appears on the screen
as below.
Press the CANCEL key to silence the audio alarm and erase the pop-up message.
There are three types of ACK transmission; able acknowledge, able to change fre-
quency and unable acknowledge. Follow the appropriate procedure on this and the
next page.
• How to send able acknowledge call
1. With [ACCEPT] selected, push the ENTER knob to send the able acknowledge
call.
2. Communicate by radiotelephone or NBDP (see "Communication by NBDP ter-
minal unit" on page 5-9).
[SELECT AN ACK] ELAPSED TIME:
INDIVIDUAL MSG 00H00M58S
FROM :
987654321 CAPTAIN_2575
COMM MODE :
TELEPHONE
COMM FREQ : TX 2170.0 /RX 2170.0 kHz
INFO PRINT HOLD QUIT
ACCEPT UNABLE PROPOSE
TX 2177.0/ RX 2177.00 kHz
[SENDING] ELAPSED TIME:
INDIV ABLE ACK 00H00M31S
TO :
987654321 CAPTAIN_2575
COMM MODE :
TELEPHONE
COMM FREQ : TX 2170.0 /RX 2170.0 kHz
INFO PRINT
TX 2177.0/ RX 2177.00 kHz