Polycom VVX 500 series - If Im already on two calls, how do I join them into a conference call?; Call Park; How do I park a call?

End User Training Participant Guide
Polycom VVX 500 and 600 Series Phones
16
What are the voicemail menu options?
Notes
Depending on the feature package assigned to the extension, sub-menus may
vary from the above chart.