A. Lines switching
Selects the line to connect and implicitly set the others on hold.
The green line has its correspondent connected.
The black lines have their correspondent on hold.
It is possible to put all the correspondents on hold (no line in green).
B. Terminate the call
Releases the correspondent’s line
C. Join selector
Selects lines to join for transfers and conferences.
D. Back to call
Go back to Connected call screen.
E. New line
Create a New line to dial.
F. Unsupervised transfer
Start a “blind” transfer.
G. Supervised transfer
Activate a transfer from a supervision call.
H. Conference
Activate a conference.