Highest Common Mechanism; Audio Only Conference Types - Polycom MGC-100 Getting Started Manual

MGC-50/MGC-100 Getting Started Guide

Audio Only Conference Types

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running on the Video+ card. For more information, see MGC Manager
User's Guide, Volume I, Chapter 4, "Video Sources".
Additional video settings can be configured for the video conference to allow
greater customization and options during a video conference.

Highest Common Mechanism

In Video Switching conferences, the Highest Common mechanism enables
the MCU to select the optimal video parameters for the conference according
to the highest video capabilities that are common to all the endpoints
participating in the conference.
The selected common video is dynamically adjusted with every time a
participant connects to or disconnection from the conference. The Highest
Common mechanism is available with both H.320 and H.323 endpoints and is
not available with SIP endpoints.
The Highest Common mechanism improves the connectivity between
endpoints, eliminate Secondary connections, and facilitates Entry Queue
Access and participants' moves during conferences.
The Highest Common mechanism in Video Switching conferences supports:
• Video Protocol (including H.263 and H.264)
• Video Format
• Frame Rate
• H.263 Annexes (N, F, T and i)
ProMotion (NTSC or PAL Interlaced Video)
•
Audio Only conferences include only Audio participants. In an Audio Only
conference, participants can connect to the conference using different
network connections: PSTN/ISDN or T1-CAS lines, cellular phones, or VoIP
(H.323 or SIP).
If Audio Look and Feel is set for the system, the conference properties and
defaults are automatically set to Audio Only and all the video parameters are
hidden. The Audio Look and Feel mode is set in the Options menu. For more
details, refer to the MGC Administrator's Guide, Chapter 5, "Audio Look and
Feel".