Vertical Communications DXP - Manual (Page 30)

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To drop out of a conference call you initiated involving
outside lines (creating an unsupervised conference),
1. Dial # (lines remain lighted and in use until one or both outside
parties disconnect; when one party drops out of an unsupervised
conference, the other party remains on hold until hanging up or
reconnecting with you on line).
NOTE: The installer must program your system to include this feature
or it will not operate as described.
•
To rejoin an unsupervised conference between two outside
lines,
1. Press TAP.
NOTE: Conference volume levels depend upon the quality of the
external lines.
Conferencing GCA70-314
6–2 Non-LCD Station User's Guide