Industry Standard Telephone User’s Guide

13.2 Camping On To a Busy Station

If you call another station and receive a busy signal or a Do Not Disturb tone, you can dial a feature code that will cause the system to ring your telephone when the station is available.

• To camp on at any busy station

1.Make intercom call and hear busy signal.

2.Dial * 6.

3.Hang up. Callback will occur when the called station becomes idle.

• To answer callback ring

—Lift handset and called station will ring. If you do not lift the handset, you will cancel the callback.

• To cancel automatic callback before camp recall occurs

1.Lift handset and listen for intercom dial tone.

2.Dial # 6.

3.Hang up.

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Vertical Communications DSU II manual Camping On To a Busy Station, To camp on at any busy station, To answer callback ring