[Asterisk-Users] Music on hold, Call Parking, etc

[Derek Beaumont]

Ok, this falls under the newbie category:

Has anybody created any documentation on using musiconhold or call parking?
I have found sample config files for musiconhold, but I'm not sure how they 
work.

[musiconhold.conf]

[classes]
loud=>mp3:/var/lib/asteriks/mohmp3

How do I then set up this feature in extensions.conf?
I can't seem to find an example of what I'm looking for (or I am not 
understanding the examples that I find .... my money is on the latter).

Do you just hit the hold button and then the person should hear the music, 
or do you need to enter an extension to place a call on hold?

Also, what exactly is call parking, and how is it different from holding a 
call?

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