Office 365 Enterprise E1, E3, and E4
|To add this feature
||Here's what you need to buy
Buy 1 Audio Conferencing license for each person who is going to schedule or host a dial-in meeting. Attendees do not need licenses.
|Audio Conferencing add-on
Once you buy the license, Microsoft will be your audio conferencing provider.
|Toll-free numbers for dial-in access to your meetings, and the ability to dial out from a meeting to add someone by calling any telephone number in the world
||1. Office 365 Phone System add-on
2. Calling Plans: buy a Calling Plan from Office 365.
Or, use the telephone service from your existing provider.
||For E1 and E4 plans, buy Exchange Online Plan 2.
Or, switch to an Office Suite that comes with Exchange Online Plan 2, such as Office 365 E3.
||1. Phone System add-on
2. Calling Plan: you can only buy this after you buy the Phone System add-on.
Office 365 E4 licenses have been officially retired. Please see Important information for Office 365 Enterprise E4 customers for more details.
E1 and E3 customers: How to see prices and buy
Sign in to the admin center.
Go to Billing > Subscriptions > Add-ons > Buy add-ons.
After you buy a Phone System license, you'll see the price and option to buy a Calling Plan.
Partners: How to see prices and buy
The E3 plan is part of your Action Pack. To buy the Phone System and Audio Conferencing add-ons:
Buy one seat of E3 from our marketing website. Choose the option to add the seat to your existing tenant.
Sign in to the admin center and go to Billing > Subscriptions > Add-ons.
Now you'll see the prices and option to buy the Phone System and Audio Conferencing add-ons.
Why don't I see the option to buy add-ons?
In a few situations, you won't see the option to buy Skype for Business add-ons in the Microsoft 365 admin center.
You purchased Office 365 Business Premium through GoDaddy. In this case, you can't buy Skype for Business add-ons. You need to switch to the E3 plan (which GoDaddy doesn't sell), and then you can buy them. Contact support for business products - Admin Help.
You have a monthly commitment instead of an annual commitment. In some cases, customers who have a monthly commitment can't buy the add-ons (this is different from the payment method, which can be monthly). This is a known issue that we are fixing. Contact support for business products - Admin Help.