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Making a DMO Group Call via Gateway
1. While in DMO, choose a gateway as described in 
“Selecting DMO Group Call via Gateway” on page 50.
2. Place the call for the selected talkgroup: 
• If you press PTT while the gateway is not available, you 
will start a DMO call without gateway. The Gateway icon 
will disappear.
• If you press PTT while the selected 
gateway is available, but the call is 
rejected by the gateway, your 
MTM800E will sound a tone and dis-
play the following screen, informing 
you that the call will be setup with-
out gateway. The Gateway icon will disappear.
• If you press PTT while the gateway is available, you will 
start a DMO call with gateway. The Gateway icon will be 
solid.
Making a DMO Group Call via Repeater
1. While in DMO, choose the Repeater option as described in 
“Selecting DMO Group Call via Repeater” on page 51.
2. Place the call for the selected talkgroup: 
• If you press PTT while the repeater is not available, you 
will start a DMO call without repeater. The Repeater icon 
will disappear.
• If you press PTT while the selected repeater is available, 
but the call is rejected by the repeater your MTM800E will 
sound a tone and display the following screen, informing 
you that the call will be setup without repeater. The 
Repeater icon will disappear.
• If you press PTT while the repeater is 
available, you will start a DMO call with 
repeater. The Repeater icon will be 
solid.