CounterPath X-Lite 4.6 for Windows User Guide - Manual (Page 15)

X-Lite for Windows User Guide
11
Placing another Call
You can place another call. The first call will be put on hold.
Place the call in the
usual way
New outgoing call
Existing call is
automatically put on hold
Switch between the different calls by clicking
Resume on the desired call panel. That call
becomes the active call and all other calls
are put on hold.