NEC XN120 Feature Manual page 38

Features
Callback
n Description
When an extension user calls a co-worker that doesn't answer, they can leave a Callback request for a
return call. The user does not have to repeatedly call the unanswered extension back, hoping to find it
idle.
The system processes Callback requests as follows:
1. Caller at extension A leaves a Callback at extension B.
Caller can place or answer additional calls in the mean time.
2. When extension B becomes idle, the system rings extension A. This is the Callback ring.
3. Once caller A answers the Callback ring, the system rings (formerly busy) extension B.
If caller A doesn't answer the Callback ring, the system cancels the Callback.
4. As soon as caller B answers, the system sets up an Intercom call between A and B.
Callback Automatic Answer determines how an extension user answers the Callback ring. When
Callback Automatic Answer is enabled, a user answers the Callback ring when they lift the handset.
When Callback Automatic Answer is disabled, the user must press the ringing line appearance to
answer the Callback ring.
Conditions
An extension can leave only one Callback request at a time.
Default Setting
Enabled.
n Programming
Ø 15-02-11 : Multi-Line Telephone Basic Data Setup - Callback Automatic Answer
Ø 15-07-01 : Programming Function Keys
Ø 20-01-07 : System Options - Callback Ring Duration Time
Ø 20-01-09 : System Options - Callback/Trunk Queuing Cancel Time
n Related Features
Ø Call Waiting (Camp-On)
Ø Programmable Function Keys
Features Manual
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