Data Sheet

AS2574B

Rev. 1

16

Jan. 1995

Hook States

LS

M

LS

LS

Idle

P O T

P O T

+

Monitor

On-hook

Off-hook

1)

2)

1) Pressing any unvalid key doesn´t have any effect in Idle state.

2) POT means Plain Ordinary Telephone.

3) Lift handset means HS going high.

4) Replace handset means HS going low.

5) Lifting the handset during ACP will change the hook state to POT, however, the dialling will continue uneffected.

Automatic

Call Progress

(ACP)

LS

Dialling

finished

N

Y

N

Y

( )

Diode

5 ?

5)

Monitor

or

Handsfree