Administrator Guide

984 | Voice and Video Dell Networking W-Series ArubaOS 6.4.x| User Guide
The UCC feature requires the PEFNG license.
UCC continues to support all existing functionality provided by ArubaOS 6.3.x. This section includes the
following sub-sections:
l Microsoft® Lync Visibility and Granular QoS Prioritization on page 984
l UCC Dashboard in the WebUI on page 993
l Viewing UCC Information on page 997
l UCC-W-AirWave Integration on page 998
l UCC Call Quality Metrics on page 998
l Changes to Call Admission Control on page 1001
l Troubleshooting and Log Messages on page 1001
l UCC Limitations on page 1001
Microsoft® Lync Visibility and Granular QoS Prioritization
This release of ArubaOS provides a seamless user experience for Microsoft® Lync users using voice or video
calls, desktop sharing, and file transfer in a wireless environment. Microsoft Lync is an enterprise solution for
UCC. It provides support for voice, video, desktop-sharing, and file-transfer.
Microsoft Lync uses SIP over TLS for call signaling.
ArubaOS provides value added services such as prioritization of Lync sessions, call quality metrics, and visibility
by implementing Lync Application Layer Gateway (ALG). This solution also provides a dedicated visibility and
troubleshooting framework that allows network administrators to fine-tune and troubleshoot Lync traffic flow
in the network.
As Microsoft Lync deployments are more widely implemented on wireless networks, it is important to provide
Quality of Service (QoS) for Lync voice or video calls, desktop sharing, and file transfer so that there is no visible
difference in the user experience between wireless and wired networks. Lync ALG offers an enriched solution in
terms of QoS, scalable voice, video, desktop-sharing, and file-transfer. The ALG based solution provides the
following value-added services:
l Call Quality Metrics: Call quality details such as Mean Opinion Score (MOS), delay, jitter, and packet loss.
l Call Priority: Call priority is provided for all Lync sessions irrespective of Call Admission Control (CAC)limit.
In ArubaOS 6.4.x, Lync sessions are prioritized based on session-specific requirements. Voice calls get
highest priority, followed by video and desktop sharing. File-transfer gets the least priority.
l Call and Client information: Details about Lync call types and statistics through CLI. The commands are
discussed later in this section.
l Deterministic Solution: A dedicated visibility and troubleshooting framework that allows network
administrators to fine-tune and troubleshoot Lync traffic flow in the network. This solution provides an
enriched performance which uses Deep Packet Inspection (DPI).
l Call Admission Control: In ArubaOS 6.4.x, Lync sessions do not come under the purview of call count
based CAC and bandwidth based CAC. For more information, see Changes to Call Admission Control on
page 1001.
To take advantage of ArubaOS 6.4.x UCC Lync ALG, it is recommended to use the Microsoft Lync SDN API.
ArubaOS 6.4.x supports all versions of Lync SDN API up to version 2.0. Microsoft Lync SDN API works with
Microsoft Lync server to export details about voice or video calls, desktop-sharing, and file-transfer to Dell