User's Manual

Dell Networking W-Series ArubaOS 6.4.x| User Guide Voice and Video | 878
Chapter 38
Voice and Video
This chapter outlines the steps required to configure voice and video services on the Dell controller for Voice
over IP (VoIP) devices, including Session Initiation Protocol (SIP), Spectralink Voice Priority (SVP), H323, SCCP,
Vocera, and Alcatel NOE phones, clients running Microsoft Lync Server, and Apple devices running the Facetime
application. Because video and voice applications are more vulnerable to delay and jitter, the network
infrastructure must be able to prioritize video and voice traffic over data traffic.
This chapter includes the following topics:
l Voice and Video License Requirements on page 878
l Configuring Voice and Video on page 878
l Working with QoS for Voice and Video on page 891
l Unified Communication and Collaboration on page 899
l Understanding Extended Voice and Video Features on page 915
l Advanced Voice Troubleshooting on page 933
Voice and Video License Requirements
The voice and video services require PEFNG licenses on the controller. For complete details on the required
licenses, see Software Licenses on page 130.
Configuring Voice and Video
This section describes the steps required to set up and configure voice features on aDell controller:
1. Set up net services
2. Configure roles
3. Configure firewall settings for voice and video ALGs
4. Configure other parameters depending on the need and environment
Assigning voice traffic to the high priority queue is recommended when deploying voice over WLAN networks.
Voice ALG and Network Address Translation
Voice ALGs do not support Network Address Translation (NAT). This is due to the way NAT functions and the
way IP addresses are embedded in the signaling messages. In a typical customer deployment, a call server is
deployed within an internal network which eliminates the need for NAT.
In short, voice ALGs should not be enabled when voice clients are behind a NAT.
Setting up Net Services
You can either use the default net services and ports or you can create or modify net services.
Using Default Net Services
The following table lists the default net services and their ports: