Post by Michael KeepingI am having trouble asking this question, I will try put it this way,
how do you key one up to make a call? how do you terminate a call? Is
there any real difference to the system than that of the one VicPol
used to use?
you would first need a DTMF keypad(radio or mic)
the system would have a DTMF sequence to activate the interconnect unit
so for example you wanted to dial the phone number 33646464 and the
system has a dial sequence of 1234 to activate the interconnect
you would just dial 1234 33646464(you also need to leave that space)
and you would be connected
now as mobile radios are not full duplex you can only hear the person on
the phone once you have released the PTT
this is available on most trunking systems, HF marine(used to be
available of VHF marine, that is why you sometimes see old VHF marine
radios with DTMF pads), the RFDS used to have it on HF, the 4WD HF
network still has it and a couple of private HF systems still have it
basically any radio system can use it, you just need the phone
interconnect unit and compatible radios
Kev