Mitel 6510 User Manual page 27

Message Menu
Note 2: While listening to a message, you can activate several
playback options by using the asterisk key (*) followed by a
keypad number or symbol.
These combinations are as follows:
Keys
*1
*2
*4
*6
*8
**
*#
Note 3: The options for playing the message louder or softer are PBX
dependent and may not be available on all systems.
6510 UM Telephone User Guide
Function
Pause message (5 seconds)
Play message louder
Play message slower
Play message faster
Play message softer
Rewind message (5 seconds)
Fast Forward (5 seconds)
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