ZETRON 4000 Series Installation Manual page 376

Appendix C: CPSW Reference Material
Patch
The patch key, when activated, will connect the channel with other patched channels.
When audio is received on one of the patched channels, the other transmitter(s) will be
activated as long as the audio is active. The patch keys on at least two channels must be
activated in order to have any effect.
Release
This key requires telephone control. The key is used to end a telephone call by releasing
the line.
Main/Standby
This key activates the channel's Auxiliary output line. It is normally used to select a
standby transmitter but can be used for other functions if desired. Each channel has one
auxiliary output line.
ANI Source
This function is assigned to the switch's lights only. The ANI option must be installed for
this function to have meaning. Whenever a valid ANI is displayed, the ANI source light
for the channel that received the ANI will illuminate. This light will be illuminated
(flashing) until the ANI review key is activated.
Site Intercom
The site intercom key allows the console operator to communicate with the radio site by
using the audio lines as an intercom path. When this key is pressed, only the audio is sent
to the channel; the transmitter is not keyed.
Monitor
This key will send the correct command (current or tone) to disable the private line or
channel guard feature of the radio allowing the received audio to be heard at the console.
The indicator LED will remain on until the channel's transmitter is keyed.
Self Repeat
Self repeat allows the channel to act as a repeater; that is, any received audio on the
channel will be retransmitted or "repeated" on the transmitter. The channel must be
configured for full duplex.
Phone On/Off Hook
This key will activate the auxiliary output line of the designated channel. It is intended to
be used as an "off hook" signal to answer an incoming phone line when the optional
telephone coupler is installed. Each channel has one auxiliary output line.
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