Aiphone AI-900ALTelephone Interface Card Connection, Telephone and AI-900ALconnection

12.5. AI-900AL Telephone Interface Card Connection

12.5.1. Telephone and AI-900AL connection

The AI-900AL can be interfaced with up to 2 commercial telephone sets. Use the telephone which complies with the FCC Regulation Part 68.

[Connection]

To connect the telephone set to the AI-900AL, use a twisted pair cable. The connector of the cable end going to the telephone needs to be the type that can be connected to the telephone connector. Perform wiring as shown below so that the loop resistance is less than 500 Ω including the telephone resistance.

Telephone and AI-900AL connection

Ferrite clamp *

	AI-900AL
	1 twisted pair cable	Line 1
	CN1
		for telephone
	CN2
	Ferrite clamp *
Telephone set	1 twisted pair cable
		Line 2
	CN3
		for telephone
	CN4
Telephone set

Front view of the circuit board

*Mount the ferrite clamp (supplied with the AI-900AL card) on the cable in a way that the cable is looped one turn as illustrated. (This countermeasure is for complying with the CE marking and FCC requirements.)

AI-900AL card

Ferrite clamp

SFC-10

Note

When using a shielded cable, connect the shielded wire to the "FG" terminal of the exchange main frame. Also, connect the unused cables, if included in a bundle of cables, to the same terminal.

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