System information

Deployment Guide for Siemens Enterprise Communications OpenScape Environments
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OpenScape LIA also improves the security of video calls and conferences by automatically assigning
Quality of Service (QoS) and security profiles called Policies using a network access control (NAC)
solution.
The following figure shows several Polycom endpoints supporting a location and identity assurance (LIA)
network automation, and is followed by more detail on QoS.
Understanding Quality of Service
Quality of Service (QoS) is an important prerequisite for voice and video over internet protocol (IP).
OpenScape LIA enables you to automatically assign and track QoS profiles for all OpenScape Video
devices and clients as well as the Polycom HDX series system and VVX 1500 phones. The challenge is to
guarantee that packet traffic and media connections are not delayed or dropped as a result of
interference from IP traffic. Typical QoS problems include:
• Latency Delays in packet delivery
• Jitter Variations in delay of packet delivery
• Packet loss Heavy network traffic causing dropped packets
You must ensure that your HDX series system or VVX 1500 phone is registered to or monitored by the
CMA system. The Enterasys Network Management System (NMS) pulls the endpoint information from
the CMA system via Simple Network Management Protocol (SNMP) in the following order: