4119549P-31 (04-17)Talk Group Example 6: Connecting to another intercom with sidetone• Sidetone is the ability to hear your own voice.• This example outlines the steps to connect an external intercom with sidetone to Radio port 1.• This example will configure talking to the external intercom only when PTT is pressed.• This example will configure listening to the external intercom only when PTT is not pressed.• Because the intercom has sidetone, an echo can be heard when a user speaks over it.• This example will eliminate this echo.Steps1. If desired, follow previous examples to create a talk group named “Intercom”.2. Create a new talk group named “External Intercom”.3. Expand the Headset or Wireless users to be part of this group.4. Optionally expand further to reveal selections (see previous examples).5. Under Outputs for each device, select All Rx-PTT:Off (or just Ear-PTT:Off for Wireless).6. Under Inputs for each device, select Mic-PTT:On.7. Expand the Radio/Aux card.8. Under Radio 1 Outputs, select Radio Tx.9. Under Radio 1 Inputs, select Radio Rx.10. Click SAVE REQUIRED.11. When the operation is complete, users of this group are now able to hear the externalintercom when not pressing the PTT, and talk over the external intercom while pressing PTT.When PTT is pressed, the users will not hear the external intercom.12. See Figure 8.23.