NEC Electra Elite IPK II User Manual page 16

To forward an extension's calls using a DISA call into the system (from
an offsite DTMF type telephone):
1. Dial the telephone number that rings the DISA trunk.
2. Wait for the DISA trunk to automatically answer with a unique dial
tone.
3. Dial the 6-digit DISA password (access code).
4. Wait for a second unique dial tone.
5. Dial the Call Forward service code (as defined in Program 11-11-
01 through 11-11-05).
6. Dial the number of the extension to be forwarded.
7. Dial 1 to set Call Forwarding or 0 to cancel Call Forwarding.
8. Dial the extension number to which the calls will be forwarded.
To use the Continue code to extend a DISA call:
1. An external call connects to an external number (either by
transferring with Tandem Trunking or by DISA caller).
2. After the system programmed time (Program 25-07-07), a warning
tone is heard and the user dials the Continue code (Program 20-
28-01) to extend the conversation.
3. After the system programmed time (Program 20-28-03), the
warning tone is heard again. After the programmed time (Program
25-07-08), the call is disconnected if the Continue code is not
dialed again.
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