User guide

14 User Guide
 You receive confirmation that the call is successful when the call is
answered and the PSTN user joins the call.
 To tear down the dial/out call, press and hold PTT to become the
active speaker and press END. While this process releases the PSTN
caller, it leaves the Dispatch Radio call in USER ON state, allowing
you to talk.
6. Initiate a Priority-1 Emergency Interruption:
a. The handset has a Priority-1 Interruption feature which allows
anyone to override the current speaker.
b. You initiate the Priority-1 interruption call by pressing P1. Once the
key is pressed, P1 appears on the display and a Dispatch Radio call is
established overriding the current speaker.
7. Initiate the Talk Group Lock/Unlock Feature (See the UI Functions
Chapter for a description of this feature).