The VCS Control now defaults to SHA-256 for signing SSO requests it gives to clients, and you can change
it to use SHA-1 if required. In version X8.5, when the SSO feature was previewed, the VCS Control defaulted
to SHA-1 and there was no way to select a different algorithm.

Note: If you were using the SSO feature with X8.5, this change may cause it to stop working after upgrade to
X8.5.1. You have two options to resolve this: leave the new default on the VCS Control, and you may need to
reconfigure the IdP to expect requests to be signed with SHA-256 (recommended for better security); the
other option is to revert the VCS Control's signing algorithm to SHA-1 for your IdP (go to

Configuration

> Unified Communications > Identity Providers (IdP)

, locate your IdP row, then in

Actions

column click

Configure Digest).

Jabber 10.6 File Transfer support

The Cisco Jabber file transfer over MRA limitation, which was previously documented in VCS documents,
has now changed as follows:

Cisco TelePresence Video Communication Server Administrator Guide (X8.5.1)

Page 23 of 563

Introduction

What’s new in this version?