How to Create Auto Attendants Exchange online SkypeForBusiness on-prem

Go to the Office 365 portal using email id and password.

Go to the Admin Center.

Go to Exchange Admin Center (EAC).
exchange admin center select Unified Messaging and select the dial plan.

Now click the + button to create a new auto attendant.

Now enter the name for auto attendant. The test is use in this doc for sample purpose.

Enter the number you want to assign to the auto attendant through which you can call on it.Click save and you have created an auto attendant.

Now that you have created an auto attendant you should link it to Lync server. Use the following command in power shell to create a contact object in AD.

New-CsExUmContact -SipAddress "sip:********" -RegistrarPool "<pool name>" -OU "OU=<>,DC=online,DC=local" -DisplayNumber "<Number>" -AutoAttendant $True
After creating contact object, assign hosted voice mail policy. Use the following command.
Grant-cshostedvoicemailpolicy –identity “CN={<>},OU=<OU Name>,DC=online,DC=local” –policyname<Policy Name>
Now to navigate it to a hunt group (see work flow documentation to see how to create hunt group) use menu navigation and enabling business hour to create a menu option and assign it the extension number of hunt group.

You can change business hours.

You can also add greetings.