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The phone system has a large set of features that users can access by dialing special codes. Your installer will provide the list of the codes. If any extension numbers conflict with these numbers, the phone system feature code will need to be changed to another number or disabled (both are easy to do).
Direct Dial Voice Mail
By default, the phone system allows internal users to dial directly to another person's voice mailbox instead of ringing their phone and waiting for them not to answer. The way to do this is to dial * followed by that person's extension number (e.g. if the extension is 205, dial *205).
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