Zte 4G LTE Router with Voice - Call Waiting; Three-Way Calling

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Call Waiting
If you subscribe the call waiting service with your local
telephone service provider, you will hear a beep tone
if someone calls while you are already on a call. Press
FLASH on the handset to put your current call on hold and
take the new call. You can press FLASH any time to switch
back and forth between calls.
• Press the Flash key lightly to switch back to the rst
call.
• Press the Flash key again to switch between two calls.
Three-Way Calling
While on an existing call, rst press FLASH key then
dial the second phone number, when the second party
answers, press the Flash key again to complete the three-
way connection. If the second party does not answer, press
the Flash key to end the connection and return to the rst
party.
NOTE:
If your phone does not have a Flash key, use the off-hook
mechanism supported by your phone instead.