This read-only LmrToneDuration object reports the duration of a defined LMR signal tone. Administrators use it to verify signaling tones are configured to play for the expected length of time, since too short or too long a tone duration can cause radio equipment to miss or misinterpret the signal. For example, if a radio's control logic isn't reliably triggering off a signaling tone, checking this configured duration against the radio's minimum-detection-time requirement could reveal a mismatch.