Operating instructions

B 6.2 SLT and ISDN Telephone Features

6-12 SLT and ISDN Telephone Features

3. Hang up.

Conditions

• If you do not answer before four callback ring signals (within 10 seconds), this feature will

be automatically cancelled.

• If the called party becomes busy again after the callback ringing starts, ringing stops but this

feature will be executed again when the extension becomes free.

Busy Station Signaling (BSS)

Allows you to inform a busy extension that you are waiting by sending three beeps.

If you make an intercom call and hear busy tone;

1. Dial 2.

• Wait for an answer and talk.

Conditions

• To receive the signal from the calling extension, refer to “Call Waiting” in this manual.

• This feature is available only for called extensions which have set “Call Waiting.”

Feature References

Call Waiting