Lucent Technologies PARTNER Advanced Communications System Release 1.0 Programming And Use Instructions page 240

Using
To access a PBX, central office, or Centrex feature (such as Call Waiting) while
active on an outside line:
System Phone
1. Press the programmed button or press
2. Enter the access code for the feature (if required).
3. To return to your original call, press the programmed button or press
0 3
again.
Standard Phone
1. Press the switchhook (or press the Recall or Flash button on a feature phone
that has one).
You hear intercom dial tone.
# 0 3
2. Press
3. Enter the access code for the feature (if required).
4. To return to your original call, press the switchhook (or press the Recall or
Flash button on a feature phone) again.
.
f 0 3
.
Recall (F03)
f
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