Multiline; Trunk-To-Trunk - Iwatsu Omega-Phone Adix APS Owner's Manual

MULTILINE

(up to 3 outside + 1 inside parties)
Operation
While speaking on an outside call:
Press the Hold button HOLD/DND to place the call on hold
Make the second outside call
Press the Add button ADD after the second party answers
Press the 1st line that was placed on hold
Or
If your phone only has one outside line button:
Press the Call Park button PARK to place the call on Call Park
Make the second call
Press the Add button ADD after the second party answers
Press the flashing Call park button PARK
All three parties will be connected. To add the 3rd outside line,
repeat the same procedure.

TRUNK-TO-TRUNK

(up to 2 outside parties)
Operation
When you are speaking with two outside parties in a multiline conference
call and wish to leave the conversation:
Press the Hold button HOLD/DND
Hang up
The two outside parties will still be in a conference.
To get back in the Multiline Conference:
Lift the receiver
Press one of the outside line buttons that are in the conference
DIGITAL TELEPHONE USER GUIDE - 89