Contents 17Dual radio operation (TM8260 only) ................................71About the foreground and background radio ........................ 72Dual radio display states and descriptions .............................. 73Radio controls in a dual radio system ..................................... 74Switching between radios (changing the foreground radio) ... 75Making a call on more than one radio (dual transmit) ............ 76Monitoring more than one radio (dual receive) ...................... 77Cross-band repeater mode .................................................... 78Operating in MPT trunked mode .....................................79Changing your operating mode ............................................. 80Checking that your network is available ................................. 81Changing your network ......................................................... 82Making a preset call ............................................................... 83About talkgroups and scan groups ........................................ 85Making a talkgroup call ......................................................... 86Changing group membership ................................................ 87About emergency operation .................................................. 90Dialling a PABX number ......................................................... 92Dialling a PSTN number ......................................................... 92Receiving a call ...................................................................... 93Re-establishing a call .............................................................. 95Checking missed calls ............................................................ 96About status messages .......................................................... 98About trunked text messages .............................................. 100Placing the radio in do-not-disturb mode ............................. 103Calls to conventional channels or conventional groups ......... 104Dialling calls in MPT trunked mode ...............................105MPT 1343 dialling ................................................................ 105Nokia ANN fleet calls ........................................................... 107Accessing common MPT trunking functions ......................... 109