V500/V525 Speaker Phone question

When making a call with my V525, I frequently like to use it in
speaker mode when driving. However, in order to setup the call, you
must dial the number, wait for the party to answer, and then wait
about 5 seconds before the SPEAKER button is displayed so you can
press it. Same for receiving a call. You have to wait about 5 seconds
after the call is established before being able to go to Speakerphone
mode.

Is there a way to dial the number or pick up the phone, and go
straight to Speaker without having to wait for so long before the
Speaker button option becomes available?

Thanks for your help.