Connect as shown below.

Exchange interconnection by means of AI-900TI

2 twisted pair cables

2 twisted pair cables

2 twisted pair cables

2 twisted pair cables

2-core shielded cable

2 twisted pair cables

2 twisted pair cables

2 twisted pair cables

2 twisted pair cables

2-core shielded cable

AI-900TI

CN1

CN2

CN3

CN4

CN6

AI-900TI

CN1

CN2

CN3

CN4

CN6

Voice line 1

Voice line 2

Voice line 3

Voice line 4

Data line RS-485

Voice line 1

Voice line 2

Voice line 3

Voice line 4

Data line RS-485

HOT

COM

HOT

COM

HOT

COM

HOT

COM

HOT

COM

HOT

COM

HOT

COM

HOT

COM

A

B

GND

GND

HOT

COM

HOT COM

HOT

COM

HOT COM

HOT

COM

HOT COM

HOT

COM

HOT COM

A

B

GND

GND

Front view of the circuit board

37

Page 37
Image 37
Aiphone installation manual Exchange interconnection by means of AI-900TI