Ai-900Al Telephone Interface Card Connection; Telephone And Ai-900Al Connection - Aiphone AI-900 Installation Manual

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12.5. AI-900AL Telephone Interface Card 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

Telephone set

* 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.)

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.

Ferrite clamp *

1 twisted pair cable

Ferrite clamp *

1 twisted pair cable

Ferrite clamp

SFC-10

AI-900AL

Line 1

CN1

for telephone

CN2

Line 2

CN3

for telephone

CN4

AI-900AL card

Front view of

the circuit board

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