Experienced telecom tech but installing my first ever Vertical; Summit 800 with 9224 and 9208 phones. I know I can set an extension to receive an internal call either tone or hands free. If an extension is set to tone can you still have the option to intercom them hands free thru the speaker? The NEC and Nortel phones we have installed always had the option it was a feature code or on a flex button. Any insight appreciated thanks!!!