12
This indicates that a dial-up is in progress to the control unit with
location number 2. The lower part of the display now toggles the
message CALLING and the NAME of the called control unit.
During the dialling time of 30 seconds it is possible to hook off
the handset and speak into the microphone. As LF is activated in
the called control unit during dialling, the receiver of the call can
hear you in the speaker without hooking off. This makes it
possible to use the VHF system as a sort of paging system.
4.
If the intercom attempt is answered:
When the receiver of the call
hooks off his handset, the
intercom is established.
If the intercom attempt is not
answered:
If the receiver of the call does not
answer the intercom within
30 seconds, the handset
automatically hangs up and
reenters normal VHF operation.
Receiving an intercom attempt from another control unit:
When an intercom is attempted from another control unit to the
handset, this will act as illustrated in the following example, where
the caller has location number 3.
1.
Receiving an intercom
The display toggles CALLING
and the NAME of the caller.
A ringing tone is heard in the speaker.
2.
To answer the intercom, hook off handset.
The intercom connection between the two control units is now
established; to communicate, simply press PTT and speak into the
microphone.
IC3
CALLING
IC2
“NAME”
16
1 10 03
MEM
VOL
SQ
During intercom the handset is able to:
1.
Adjust volume level
2.
Mute/unmute speaker
3.
Adjust squelch level
4.
Adjust dimmer level
Terminating an intercom session:
The intercom connection can be terminated by either of the control
units.
To end an intercom:
1.
Place handset on hook.
The handset resumes in VHF mode.
2.
Key
The handset resumes in VHF mode.
3.
Key
The handset resumes in VHF mode selecting channel “16”.
Summary of Contents for A1 VHF-DSC
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