8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide – PART II
January 2019
Page 95 of 153
• ‘ICM All’ – the MSU speaker unmutes to all PSU audio regardless of the TG ID
(digital DVR channel) or all analog PSU audio (analog DVR channel).
When the MSU is operating on a conventional FNE with ICM enabled the following
configurations are available:
• ‘ICM Selected’ and MSU configured for Selective Squelch – the MSU speaker will
unmute only to PSU audio matching its selected TG (digital DVR channels) or
qualified analog audio (analog DVR channels)
• ‘ICM Selected’ and MSU configured for Normal Squelch – the MSU speaker will
unmute to any PSU TG audio (digital DVR channels) or qualified analog PSU audio
(analog DVR channels).
• ‘ICM All’ – the MSU speaker unmutes to all PSU audio
Proxied Private Calls are never heard on the MSU speaker regardless of the Hang Up Box
(HUB) status.
NOTE:
Inbound Private calls to the MSU are not supported. Outbound Private Calls to the MSU
are heard on the MSU Speaker.
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