Grandstream Phone Tutorials

How to make a Call

How to Make a Conference Call

How to Check your Voicemail

Explanation of Voicemail Options

How to use Speakerphone

How to use Redial

How to Intercom Call Someone

How to use Hold

How to use Do Not Disturb

How to make an Unattended Transfer

How to make an Attended Transfer

How to Transfer directly to Voicemail

How to Switch Between People on Hold

How to Park a Call

How to Forward all Calls to another Destination