Polycom 3725-76302-001O manual SVC Conferencing Support

Polycom® RealPresence DMA® 7000 System Overview

●Billing and usage data retrieval

●Resource availability queries

The API uses XML encoding over HTTPS transport and adheres to a Representational State Transfer (REST) architecture.

To browse the RealPresence Platform API reference documentation, in your web browser’s address field, type in the following URL (replacing <dma_hostname> with the hostname or IP address of your RealPresence DMA system):

http://<dma_hostname>/api/rest/documentation

Note: Asynchronous API communication

The API communicates asynchronously. Clients subscribing to event notifications via the API must be prepared to receive notifications out of order.

A Polycom RealPresence Resource Manager system can integrate with the RealPresence DMA system via the API. No separate license is needed in order for the RealPresence Resource Manager system to use the API. It provides the full programmatic access to the RealPresence DMA system described above and enables users of the RealPresence Resource Manager scheduling interface to:

●Schedule conferences using the RealPresence DMA system’s MCU resources.

●Set up Anytime conferences. Anytime conferences are referred to as preset dial-outconferences in the RealPresence DMA system (see Edit Conference Room Dialog Box on page 317)

Note: Integration with a Resource Management System

Integrating the Polycom RealPresence Resource Manager system with the RealPresence DMA system via the API is separate and distinct from integrating the RealPresence DMA system with a Polycom CMA or RealPresence Resource Manager system.

•The former enables RealPresence Resource Manager users to obtain information from and use functionality of the RealPresence DMA system that would otherwise be accessible only in the RealPresence DMA system’s management interface.

•The latter enables the RealPresence DMA system to retrieve site topology and user-to-device associations from the CMA or RealPresence Resource Manager system.

For convenience, however, when you integrate your RealPresence Resource Manager system to the RealPresence DMA system, the RealPresence DMA system automatically integrates itself back to the RealPresence Resource Manager system so that the RealPresence DMA system will have the site topology and user-to-device information that the RealPresence Resource Manager system expects it to have.

SVC Conferencing Support

This version of the Polycom RealPresence DMA system supports the Annex G extension of the H.264 standard, known as H.264 Scalable Video Coding (SVC), for both point-to-point and multipoint (VMR) calls.

SVC is sometimes referred to as layered media because the video streams consist of a base layer that encodes the lowest available quality representation plus one or more enhancement layers that each provide an additional quality improvement. SVC supports three dimensions of scalability: temporal (frames per second), spatial (resolution and aspect ratio), and quality (signal-to-noise ratio).

The video stream to a device can be tailored to fit the bandwidth available and device capabilities by adjusting the number of enhancement layers sent to the device.

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