vDTMF (DUAL TONE MULTI FREQUENCY) CALLS........................23MAKing A dTMF cAll .....................................................................23A uTodiAl .........................................................................................23STun code ......................................................................................23TRUNKING CALLS............................................................................24MAKing A Telephone cAll ...............................................................24receiving A Telephone cAll ...........................................................24MAKing A STATuS cAll.....................................................................24EMERGENCY CALLS .......................................................................25SCRAMBLER (FM)/ ENCRYPTION (P25).........................................26Secure (encrypTed ) TrAnSMiSSion ...................................................26S elecTing The ScrAMbler code (FM) ..............................................26S elecTing The encrypTion Key (p25) ..............................................26deleTing The encrypTion Key ..........................................................27pASSword proTecTion .....................................................................27SIGNALING........................................................................................28quieT TAlK (qT)/ digiTAl quieT TAlK (dqT)....................................28opTion SignAling ............................................................................29CLOCK ...............................................................................................30clocK A djuSTMenT ..........................................................................30ADVANCED OPERATIONS ..............................................................31BACKGROUND OPERATIONS ........................................................35TiMe- ouT TiMer (ToT) .....................................................................35S ignAl STrengTh indicATor..............................................................35coMpAnder .....................................................................................35buSy chAnnel locKouT (bcl) ........................................................36ouT oF rAnge .................................................................................36S iTe TrunKing .................................................................................36conTrol chAnnel hunT ..................................................................36pTT id ...........................................................................................36VGS-1 OPTIONAL VOICE GUIDE & STORAGE UNIT .....................37voice recorder ..............................................................................37voice guide ....................................................................................38