View source for TKIE - Using the loudspeaker as microphone

{{AEIPS}}
This article describes how the loudspeaker connected to a [[TKIE-2]] kit also can be used as a microphone.

== Wiring diagram ==

[[File:TKIE AnswerInSpeaker2.PNG|thumb|left|700px|Wiring diagram - The two relays are used to switch between mic input and amplifier output]]
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Minimum loudspeaker impedance is 8 ohms.

{{note|Use a 1uF capacitor in series with the plus-wire to remove the microphone bias}}

== Configuration ==
The relays of the TKIE switches the loudspeaker. In idle the loudspeaker is connected to the mic input. When the relays are activated the loudspeaker is connected to the amplifier output.

=== ICX/AlphaCom system ===
To operate the relays, an event must be created with the TKIE-2 kit as the Event Owner:

[[File:TKIE RelayAC.PNG|thumb|left|700px|The [[Audio (Event Type)|Audio event]] is used to switch the relays]]
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In the example above the relays are controlled by the [[SET IPRCO|SET_IPRCO command]]. One can alternatively use the [[RCO - Set Remote Control Output|RCO command]].

When the "Sub-event" = 62, this event will operate the relays when: 
* M-key is pressed during a direct call
* Group call is received
* Audio Program is playing
* Alarm Message is received

=== Edge system ===
* [[Logging into an IP Station|Log on to the Edge Controller]], and select '''Edge Controller''' > '''System Configuration''' > '''Special Settings'''
* Under the '''Relay''' column, select '''Show/Hide Settings''' for the TKIE kit
*To [[Relay Settings (Edge)|operate the relays]] of the TKIE when using the M-key during a direct call, configure '''Remote Digit For Relay On''' and '''Remote Digit For Relay Off''' as shown in the screen shot below.
*If the loudspeaker should distribute group calls, configure '''Group Call (Edge mode only)''' and '''Idle''' according to the screen shot below.

{{note|The below configuration must be done for both '''Relay 1''' and '''Relay 2'''}}

[[File:TKIE RelayEdge.PNG|thumb|left|700px|Relay configuration in Edge mode]]
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=== Pulse system ===
* [[Logging into an IP Station|Log on to the TKIE kit]], and select '''System Configuration''' > '''Relay/Output Settings'''
*To [[Relay Settings (Pulse)|operate the relays]] of the TKIE when using the M-key during a direct call, configure '''Remote Digit For Relay On''' and '''Remote Digit For Relay Off''' as shown in the screen shot below.
*If the loudspeaker should distribute group calls, configure '''Group Call (Pulse mode only)''' and '''Idle''' according to the screen shot below.

{{note|The below configuration must be done for both '''Relay 1''' and '''Relay 2'''}}

[[File:TKIE RelayPulse.PNG|thumb|left|700px|Relay configuration in Pulse mode]]
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[[Category: Public Address - Features and configuration]]