Hang Time

Contents:

ETSI Standard
Protocols
Hang Time
ERDM - Extended Range Direct Mode

Hang Time

What does Hang Time do?

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.

Source: https://cwh050.blogspot.com/2017/06/what-does-hang-time-do.html

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ERDM - Extended Range Direct Mode

The Extended Range Direct Mode system utilizes a time division duplex repeater that receives a direct mode transmission and repeats it 90 ms later. This systems's primary purpose is to extend direct mode range while utilizing a single frequency. A radio initiates a transmission as it does in direct mode and can receive transmissions directly from a radio or from the repeater. At the beginning of reception, the radio selects the best signal. Therefore, direct mode operation is still supported in the absence of the repeater without having to change channels. When receiving directly from a radio, the receiving radio displays the talkaround icon.

Source: http://s3.trbonet.com/web/guides/TRBOnet_Deployment_Guide_ERDM.pdf

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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20220505 - pre published v0.9