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Getting phones for Skype for Business Online


Skype for Business Online operated by 21Vianet in China will be retired on October 1, 2023. If you haven't upgraded your Skype for Business Online users yet, they will be automatically scheduled for an assisted upgrade. If you want to upgrade your organization to Teams yourself, we strongly recommend that you begin planning your upgrade path today. Remember that a successful upgrade aligns technical and user readiness, so be sure to leverage our upgrade guidance as you navigate your journey to Teams.

Skype for Business Online, excluding the service operated by 21Vianet in China, was retired on July 31, 2021.

Skype for Business Online qualifies and supports desktop phones for users who want to have a traditional phone experience, rather than use the Skype for Business app. This article covers the phones and firmware versions that are supported for use in Skype for Business Online and other information that can help you when you're setting up phones in your organization.


Skype for Business will slowly be replaced by Microsoft Teams as the primary communication method in Microsoft 365 and Office 365. See A new vision for intelligent communications in Office 365 for more information.

To get the latest updates and most up-to-date information on supported devices, see the Microsoft Teams devices for intelligent communications.

Supported phones

Microsoft is partnering and working closely with Polycom, Yealink, and AudioCodes to develop and certify a wide variety of devices through the Partner IP Phone Program (PIP) for the Phone System.

When ordering new phones for Skype for Business, it's important to buy phones with the right product ID. These product IDs will ensure that the phones you receive have the Skype for Business Online qualified version already installed.

Phone Partner Skype for Business specific product ID
Polycom Product ID -019
Yealink SIP-TXXG Skype for Business Edition
AudioCodes UCXXXHDEG (SfB)

For more information on Polycom phones, see Poly Documentation Library.

For more information on Yealink phones, see Skype for Business IP Phones.

For more information on AudioCodes phones, see Skype for Business IP Phones.


Lync Phone Edition is supported with Skype for Business Online, but not with Microsoft Teams. Mainstream support for the LPE platform ended by April/10/2014, with extended support until April/11/2023 to align with the product support lifecycle of Lync Server 2013. See Microsoft Product Lifecycle for details on the LPE lifecycle. LPE CAP models aren't supported with Skype for Business Online.

Later this year, Office 365 will not support any version of TLS older than 1.2. Since the underlying operating system of LPE does not support TLS 1.2, LPE will not be supported to connect to Office 365 anymore. See Preparing for the mandatory use of TLS 1.2 in Office 365 for more information.

Supported firmware

This is the minimum software release required for supported phones to work with Phone System:

Phone type Minimum firmware Release date
Optimized (Lync Phone Edition) 4.0.7577.4463 May 2015
Certified Polycom VVX Series 5.4.0A December 2015
Yealink X.8.1.52 February 2017
AudioCodes December 2016

For more information on current certified firmware versions, see Skype for Business IP Phones.


Lync Phone Edition (LPE) phones you have set up for your on-premises deployment must be updated to the minimum or later required firmware prior to moving those users over to Skype for Business Online. If you move your users from on-premises to Skype for Business Online before you update the firmware on the phones, those phones won't be able to connect to Skype for Business Online.

Required licenses

Skype for Business Online doesn't require any extra Microsoft license other than the user licenses. To learn more about the required user licenses, see Skype for Business and Microsoft Teams add-on licensing.

Manufacturer licensing models might vary between open SIP and Skype for Business Certified firmware. If you're repurposing a certified model with an Open SIP firmware, you'll need to verify firmware license requirements with the manufacturer.

Skype for Business Online connected phones feature set

For full device features and capabilities, check the manufacturer user guides.

Feature Polycom 3PIP Yealink 3PIP AudioCodes 3PIP LPE
Sign in with user credentials Yes Yes Yes No
Sign in via PC (Pairing), Windows Only Yes Yes Yes Yes
Sign in using (Web Sign-in)

Note: Check the supportability matrix in deployment guide.
Yes Yes Yes No
Single-click join meeting Yes Yes Yes Yes
Click to dial (Pairing) Yes Yes Yes Yes >
Meeting Controls Yes Yes Yes Yes
Visual Voicemail Yes Yes Yes Yes
Phone Lock Yes Yes Yes Yes
Device Update Yes Yes Yes Yes
In-band Provisioning Yes Yes Yes Yes
QoE Yes Yes Yes No
Log Upload

Note: Currently, all logs are uploaded to the Microsoft Support team only; customer access to phone logs aren't yet available.
Yes Yes Yes Yes
Modern Authentication Yes Yes Yes No
Multiple Emergency Number Yes No No Yes
Exchange Calendar Integration* Yes Yes Yes Yes

Note: Requires PC tethering
Presence Integration Yes Yes Yes Yes
Corporate Directory Yes Yes Yes Yes
Delegation Yes Yes Yes No
Contact Picture Integration No Yes No Yes


CX 600 or any other Aries phones don't support multifactor authentication (MFA). If you force MFA, these devices will fail to sign-in. These devices must use only Org ID for authetication.

What else should you know?

For step-by-step setup instructions, see Deploying Skype for Business Online phones.

Getting service phone numbers for Skype for Business and Microsoft Teams

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