Toshiba DKT3000 用户手册

Off-hook Call Announce (OCA) enables you to complete a call to a busy digital telephone. Your 

telephone must be programmed to either announce automatically or to announce after you press a 

button on your dial pad. The destination telephone must be programmed to accept an OCA. The 

announcement may be delivered over the handset or the speaker.
Handset OCA Announce can operate on any digital telephone. Speaker OCA requires the addition of 

a special circuit board inside the DKT speakerphone.

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Manual – Dial an extension. When you hear busy tone, press 

5

 and, after one long tone, you can 

talk through the speaker of the destination telephone. The person you are calling has answering 
options described below. 

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Automatic – If your telephone and the extension you are calling have been programmed for 
Automatic OCA, you can talk through the speaker of the destination telephone without hearing 
the busy tone and without dialling 

5

.

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While you have a call in progress, you hear one tone in your handset to indicate that a second station 

is calling. 

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Press 

Msg

 to toggle between the new and original callers.

You talk to the new caller for as long as you hold down 

Mic

. When you release the button, you return 

to the original caller. In both cases, neither caller can hear the other. Your LCD indicates which station 

or Exchange line you are connected to. 

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To answer a Speaker OCA call
1. While you have a handset call in progress and you hear one tone, this indicates that a second station is 

calling. The second caller connects to the speaker in your telephone. The Spkr LED flashes and the 

Mic LED lights. You will be speaking to the first caller through your handset and the second caller 

through the microphone.
Press 

Mic

; the Mic LED turns Off. You will no longer be talking to the second caller, although he/she 

can still speak through your speaker. 

2. Press 

Mic

 again to reconnect to the second caller. You can toggle as often as you choose. If you do 

not want the first caller to hear your conversation with the second caller, cover the mouthpiece of your 

handset.