Nortel Networks NN44470-100 - Manual (Page 24)

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MAS commissioning
Nortel Media Application Server 6.0 for AS 5300
Fundamentals
NN44470-100 01.01 Standard
Release 6.0 03 June 2008
Copyright © 2008, Nortel Networks
Continuous streaming
The MAS platform supports continuous streaming of pretranscoded real-time
audio that applications can use to facilitate a radio broadcast effect. With this
feature, applications can give sessions music-on-hold streaming or connect
the sessions to Internet-streaming radio servers. Multiple sessions can listen
to the same real-time audio stream without the cost of transcoding the stream
on each session or connecting each session to a remote server.
The MAS platform can stream from the following providers: Directory or RSS.
The following sections describe these providers in detail.
To adjust the continuous stream volume, use the Nortel MAS Console to edit
the Continuous Streaming Volume Adjustment (dB) property (specify the
value in decibels [dB]).
Directory provider
With the directory provider, files in a local directory can be transcoded,
cached, and played indefinitely in alphabetic order. Continuous playback is
achieved by repeating the sequence. The platform monitors the directory and
detects any changes made for dynamic updates.
To configure the Directory Provider you must create a directory inside
%BASEDIR%\platdata\StreamSource\ChannelRoot. This directory name is
the channel name that the application specifies and is used to stream from this
source. Nortel recommends that you place all audio files in this directory.
RSS provider
The RSS provider can retrieve and parse Real Simple Syndication (RSS)
documents. The RSS provider downloads the contents of these documents so
the directory provider can play them. The RSS provider supports the following
features:
• automatic RSS feed synchronization —to automatically add and remove
content
• time-to-live attribute—to update content
• fault tolerance—to preserve local files until files are safely downloaded
• MP3 and WAV content types
RSS is a dialect of Extensible Markup Language (XML) and the platform
currently supports RSS 2.0. For more information, see the RSS 2.0
specification document at
www.rss-specification.com .
The platform is currently limited to RSS documents that are no larger than
260 kbytes. The following illustration shows a sample RSS 2.0 document.