Connections

A 12-conductor ribbon wire plugs into a header on the MI6500 and connects to the voice terminal main printed wiring board. The connections are as follows:

1. Handset, aux, speakerphone wires for beep tone generation.
2. Handset, aux, speakerphone wires for recorder audio.
3. 5vdc and ground for the 8ma of power required.

A new modular line jack replaces the original line jack on the set. The new jack retains all the same connectivity as the original jack, plus it provides an analog audio output for recording. Note the MI6500 plugs into the original line jack. Refer to the tables provided for pin assignments.

Connection tables

The following tables show the wiring for the MI6500.

• Connections, 2 wire circuit pack

  Use this table when connecting to a 2-wire port circuit pack.
  The recorder audio connections are highlighted.

  DESIGNATION	PIN # ON NEW MODULAR LINE JACK	TYPICAL 103 OR 104 BLOCK #	DEFINITY STATION WIRING CODE		PAIR
  Analog audio output for recorder (T)	1	3	white/orange		2
  Analog audio output for recorder (R)	2	4	orange/white		2
  none	3	5	white/green		3
  Ring (R)	4	2	blue/white		1
  Tip (T)	5	1	white/blue		1
  none	6	6	green/white		3
  -48vdc	7	7	white/brown		4
  GRD	8	8	brown/white		4

• Connections, 4 wire circuit pack

  Use this table when connecting to a 4-wire port circuit pack.
  The recorder audio connections are highlighted.

  DESIGNATION	PIN # ON NEW MODULAR LINE JACK	TYPICAL 103 OR 104 BLOCK #	DEFINITY STATION WIRING CODE		PAIR
  Terminal transmit tip (TXT)	1	3	white/orange		2
  Terminal transmit ring (TXR)	2	4	orange/white		2
  Private branch exchange transmit tip (PXT)	3	5	white/green		3
  Analog audio output for recorder (R)	4	2	blue/white		1
  Analog audio output for recorder (T)	5	1	white/blue		1
  Private branch exchange transmit ring (PXR)	6	6	green/white		3
  -48vdc	7	7	white/brown		4
  GRD	8	8	brown/white		4

Options

Two switches control how the interface functions. Refer to the diagrams below.

• Line switch

  The MI6500 connects between the voice terminal and the PBX, allowing the recorder audio to use existing spare conductors in the line cord. Pair 1 is the recorder audio on a 4-wire circuit pack. Pair 2 is the recorder audio on a 2-wire circuit pack. Determine which circuit pack you are connecting to and set the line select switch to match it. It is important to set this option before the voice terminal is plugged into the line cord.

• Beep tone

  The toggle switch is set on to enable or disable the beep tone generator.

  

  
  

  

  
  

Specifications

MI6500
GENERAL	Size	3.3"L x 2.5"W x .9"H
	Weight	3.5oz
	Operating voltage	5vdc
	Power consumption	8mA
AUDIO	Audio output	-0dB (+-1dB)
	Beep tone	1400Hz, 200ms burst, 12-15 sec. interval.