CD OR Te Squelch Level Setting The squelch level can bs sst via programming software, tangs from 0-8. Default : 4. If the squelch level set too high, weak signal won't be received. if the squelch level set to low, background nose will emit from speaker while receiving a signal Time-out Timer (TOT) This function Is to avoid long period of occupying a channel. When user transmits a call over the preset teems, the radii will tbsp and automatically stop transmitting.