Clear-Com HX System Frames - Manual (Page 245)

If the call is refused three times, to continue making the call you must select Restart
Blocked Connections at the bottom of the IVC-32 Diagnostics screen (see Restart
blocked connections on page 175).
Figure 10-7 IVC-32 Diagnostics screen
You can also access the Restart Blocked Connections button by selecting Detailed at
the top right of the Monitoring screen.
Figure 10-8 Restart Blocked Connections
245 Eclipse EHX Software User Guide