AT&T Office@Hand

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AT&T Office@Hand TLS Upgrade
Article #11182

This article provides information on TLS 1.2 protocol used by AT&T Office@Hand and which TLS protocols are used on each platform.

What is TLS?

Transport Layer Security (TLS) is a protocol that uses encryption to protect the transfer of data and information. To further protect our customer’s privacy, AT&T Office@Hand is upgrading from TLS 1.0 and TLS 1.1, to TLS 1.2

AT&T Office@Hand Desk Phone

For Poly/Polycom and Yealink devices on the table below they will only support TLS 1.2. Cisco devices will still support all TLS versions; however, you might encounter issues if your Cisco device is not upgraded to TLS 1.2. There will be no impact on customers using AT&T Office@Hand certified devices with secure voice transport enabled.

AT&T Office@Hand TLS 1.2 certified devices BYOD devices supported for TLS 1.2

Polycom VVVX601
Polycom VVX501
Polycom VVX450
Polycom VVX350
Polycom VVX250
Polycom VVX150
Polycom OBi302 ATA
Polycom Trio8800
Polycom Trio8500
Polycom VVX501
Polycom VVX601
Yealink T48S
Yealink T46S
Yealink T42S
Yealink W60P








Polycom VVX101
Polycom VVX201
Polycom VVX300
Polycom VVX301
Polycom VVX310
Polycom VVX311
Polycom VVX400
Polycom VVX410
Polycom VVX411
Yealink W52P
Yealink W56P
Polycom SPIP301
Polycom SPIP320
Polycom SPIP321
Polycom SPIP330
Polycom SPIP331
Polycom SPIP335
Polycom SPIP430
Polycom SPIP450
Polycom SPIP500
Polycom SPIP501
Polycom SPIP550
Polycom SPIP560
Polycom SPIP601
Polycom SPIP650
Polycom SPIP670
Polycom SSIP4000


AT&T Office@Hand Online Account

AT&T Office@Hand will require TLS 1.2 and later encryption protocol beginning December 1, 2018, to maintain the highest security standards to protect customer privacy and align with industry standards. Browsers attempting to connect to AT&T Office@Hand servers using a TLS v1.0 / 1.1 connection will be rejected. AT&T Office@Hand will require TLS v1.2 and later encryption protocol beginning December 1, 2018.

Unsupported browsers will be prevented from accessing AT&T Office@Hand. The user’s browser will display a standard browser connection error. You can go to this website to check if your browser supports TLS v1.2: Scroll down to Protocol features. A Yes should be reflected next to TLS 1.2.

Updating to the latest version of your browser should enable support for TLS v1.2.

AT&T Office@Hand for Mobile

For Android users, this means the following:

  • Earlier than 4.4.x (KitKat): Android versions older than 4.4 don’t support TLS 1.1/1/2 and therefore are no longer supported by the AT&T Office@Hand mobile apps. Existing applications running on these devices will stop working when TLS 1.0/1.1 are disabled.
  • 4.4.x (KitKat): AT&T Office@Hand phone versions 8.1 and higher will continue to work on Android 4.4.x devices. For existing AT&T Office@Hand phone versions less than 8.1 (over two years old), AT&T Office@Hand Meetings will stop working when TLS 1.0/1.1 are disabled.
  • 5.x (Lollipop) and later: Android versions 5.x and later support TLS 1.1/1.2 by default so existing applications will continue to work on these devices.

For security reasons, we advise Android users running Android 4.4.x and older to upgrade to the latest version of the Android operating system. Google officially stopped supporting Android 4.4.x over one year ago (October 2017) and no longer provides updates for this version of the operating system, including critical security fixes. In order to protect our Android users, AT&T Office@Hand will stop support for Android 4.4.x in the 10.3 release.

Key Words: AT&T Office@Hand, TLS 1.0 Deprecation