Garmin GTN 750 Pilot's Guide - Page 59

2.3.3 Telephone Configuration Foreword The GMA 35 provides a 2-way telephone interface. Operation depends on the state of the TEL key and ICS mode. Telephone communication is much like Getting Started using the intercom, allowing both parties to talk at once. Audio & The TEL channel may be disabled in Configuration mode. Contact a Garmin- Xpdr Ctrl authorized service center for details. Com/Nav 1. While viewing the Intercom Setup page, touch the Telephone key to set its configuration. FPL Heavy Outline Indicates The Upper Left Rotary Knob Controls Volume Direct-To Proc Touch To Decrease Volume Touch To Select Telephone Recipients Touch To Increase Volume Percent Of Maximum Volume Graphic Scale Showing Volume Figure 2-21 Telephone Configuration 2. Select the recipients for Telephone Distribution by touching any combination of the Pilot, Co-Pilot, or Passenger keys. Charts Wpt Info Map Traffic Terrain Weather 3. Touch the Volume arrows to set the desired Telephone Volume Nearest level. Music Utilities System Messages Symbols Appendix 190-01007-03 Rev. B Garmin GTN 725/750 Pilot's Guide 2-19 Index