Connections

The MI8500 connects between the voice terminal and the PBX, allowing the recorder audio to use existing spare conductors in the line cord. Pair 2 is the recorder audio.
Note the MI8500 uses the original line jack on the set. Connect the line cord to the new modular line jack. The new jack retains all the same connectivity as the original jack, plus it provides the analog audio output for recording. Refer to the wiring table for the pin assignments.

• Beep tone

  The toggle switch located beside the new line jack is used to enable or disable the beep tone generator. The default setting is on.

Wiring table

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	3	orange/white		2
---	3	5	white/green		3
Ring (R)	4	2	blue/white		1
Tip (T)	5	1	white/blue		1
---	6	6	green/white		3
-48vdc	7	7	white/brown		4
GRD	8	8	brown/white		4

• Jack locations
  • MI8500 installed in the 8510 voice terminal, bottom view.

    

  • MI8500 installed in the 8520 voice terminal, rear view.

    

Specifications

MI8500
GENERAL	Size	2.75"L x 2.2"W x .625"H
	Weight	1.5oz
	Operating voltage	5vdc
	Power consumption	4.6 - 8.9mA
OUTPUTS	Beep tone	1400Hz; 200ms burst; 15 sec. interval.
	Audio output level	-0dB (+-1dB)
	Insertion loss	Less than .5dB