Instruction manual

ACU-1000 Operations Manual
4-8 Interoperability Now
In Figure 4-3 above, a cross-connection has been made to link radios #1, #3, and #4. At the
moment depicted, a portable of the #4 radio system has keyed (TX) first, so its audio is being
retransmitted to the #1 and #3 radio systems. The stoplights signify that, until the #4 portable
unkeys, only the audio from the #4 radio will be allowed. If the #1 or #3 portables transmit
before #4 stops transmitting, their active COR signals will be ignored by the system.
Figure 4-4 Dispatcher Priority
Figure 4-4 shows a dispatch center interfaced to the #1 extension of the sample Interoperability
System. The #1 extension has been configured for Dispatcher Priority, and an active COR
signal at this extension will not be blocked and will instead cause the dispatcher’s audio to be
retransmitted, even if the #4 portable stays in the TX mode. The dispatcher’s audio will be
transmitted instead, or will be mixed with existing incoming audio from any other DSP-2 also
set to COR (Dispatch) Priority.