112 PANEL DESCRIPTIONVOICE SCRAMBLER FUNCTIONPush to toggle the voice scrambler function ON and OFF.COMPANDER KEYPush to toggle the compander function ON and OFF.The compander function reduces noise components from the trans-mitting audio to provide clear communication.USER SET MODE KEY➥ Push and hold to enter user set mode.• During user set mode, push this key to select an item, and push[CH Up]/[CH Down] to change the value or condition.➥ Push and hold this key again to exit user set mode.• User set mode is also available via the ‘Power ON function’. Pleaserefer to p. 18 also.DIGITAL KEY (BIIS operation only)➥ Push to select the call ID list, transmit message and standbycondition. Toggles between queue channel and received mes-sage record indication after queue channel is selected.➥ Push and hold to select queue channel indication.STATUS UP/DOWN KEYS (BIIS operation only)➥ While in the standby condition, push to display the transmit sta-tus indication and select a status number.➥ When a received SDM is displayed, push to cancel the automaticscroll and scroll the message manually.➥ When an SDM that contains more than 8 characters is displayed,push to scroll the message manually.