No, but if there are lots of calls you may be left on hold. And, 911 emergency calls are recorded, even those on hold in most cases.
The term Voicemail was coined by Televoice International (later became Voicemail International) for introduction of the first nationwide Voicemail® service in 1980.
Check Wikipedia and read about their Voicemail article.
A voicemail is an audio recording of a message left by a telephone caller.
You can extend the length of time on a voicemail by checking the options that are listed with it. It will give you the option of choosing to lengthen your voicemail there.
It is possible that police will leave a voicemail on your phone.
Voicemail is provided by your network and you will need to ask them if you can get voicemail.
Voicemail - 2011 was released on: USA: October 2011
For
That depends entirely on the specific voicemail system. Each system is different.
Voicemail - 2007 was released on: USA: February 2007 (internet)
Voicemail - 2012 was released on: USA: 15 August 2012
Voicemail is most likely available with cellular service.