This read-write object sets, in minutes, how long the subscriber unit's transmitter will remain muted once muting is triggered, with a range up to 65535 minutes. An admin uses it to schedule a controlled outage window, for instance during maintenance on a shared frequency, without needing to remember to manually re-enable transmission. For example, before performing RF work near a subscriber's antenna, the admin could set p2mpSuTxMuteDuration to 30 minutes to keep the radio silent just long enough for the work to complete safely.