NEC DSX Software Manual page 262

Line Queuing / Line Callback
Operation
To queue or leave a callback for a busy line:
1. Do one of the following.
a. Press the line key for the busy line.
b. Press INTERCOM and dial the Direct Line Access code (e.g., 101 for line 1).
Dial 2 and do one of the following.
2.
a. Wait on the line without hanging up for Line Queuing.
b. Hang up for Line Callback.
When the line becomes free, do one of the following.
3.
a. For Line Queuing, you hear outside dial tone so you can place your call again.
For Line Callback, you hear the Line Callback ring. If you answer the ring:
b. • You hear outside dial tone.
• Place your call again.
232 ◆ Features
Using Line Queuing and Line Callback
In these instructions:
[Super Display Soft Key]
[Keyset Soft Key]
DSX Software Manual