NEC Univerge SV8100 Features And Specifications Manual page 472

Issue 1.0
Operation
To use the Drop key from a Multiline Terminal with a CO/PBX call in progress:
1. Press the Function key programmed as a Drop key.
2. Receive the new CO/PBX dial tone.
3. Dial the desired number.
To use Feature plus Recall from a Multiline Terminal with a CO/PBX call in progress:
1. Press Feature.
2. Press Recall.
Receive the new CO/PBX dial tone.
3. Dial the desired number.
To use the Drop key feature from a single line telephone with a CO/PBX call in progress:
1. Hookflash.
2. Receive internal dial tone.
3. Dial the Service Code (Program 11-12-59, Default Not Assigned).
4. Receive the new CO/PBX dial tone.
5. Dial the desired number.
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UNIVERGE SV8100
Drop Key