The Group Call Hang Time sets the duration, during which a radio will talk back to a received call or continue a transmitted Group Call, using the previously received or transmitted Group ID. After expiration of the Group Call Hang Timer, the radio will transmit using the TX Contact Name (Talkgroup or Radio) specified for this channel in the CPS.
There are two places where this is set: in the repeater and in the radio. The Talkgroup Call Hangtime in the radio codeplug is only applicable when the radio is operating on a simplex or talkaround channel. The repeater setting is applicable when radios are operating via the repeater in ERDM; Conventional; IP Site Connect or Capacity Plus modes.
There is also a Hang Time for Private Calls and the above rules apply. Additionally, in the Repeaters there is also a Hang Time for Emergency Calls.