Polycom (RMX) 1500 User Manual

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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 
Polycom®, Inc. 
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The Cascade and Enable ISDN/PSTN Dial-in options should not be enabled with this type of 
Entry Queue. 
Using External IVR Services via the MCCF-IVR Package
IVR Services can be controlled externally from an application server supporting the MCCF-IVR (Media 
Control Channel Framework-Interactive Voice Response) package. The external IVR service is currently 
being implemented with the integration of the Polycom RealPresence Virtualization Manager (DMA) as the 
application server. When the application server is deployed in the enterprise environment and the Polycom 
RealPresence Collaboration Server (MCU) is deployed as a media server, the external IVR service can be 
used to play audio messages, display slides, and collect DTMF input from the participant. The external IVR 
service is managed by the application server at the pre-conference phase when the participant is placed 
into a special external IVR-controlled Entry Queue in the Collaboration Server (MCU), collecting information 
before connecting to the conference.
The external IVR-controlled Entry Queue plays recorded voice messages or sends video slides such as 
splash screens to the participant and collects DTMF input from the participant such as conference ID and 
conference password for various functions. 
IVR media files, WAV for voice messages and JPG for video slides, are stored on the application server. In 
order to provide external IVR control, a TCP-based MCCF channel is created between the application 
server and the media server. Because of real-time considerations, when the MCCF channel is established, 
the application server notifies the media server about the media files. The media server downloads the 
media files. The media server is notified by the application server when to download new or updated media 
files.
When the call has completed the pre-conference phase in the external IVR-controlled Entry Queue, the 
application server disconnects the call from the Entry Queue and routes the call to an ongoing conference 
or creates a new VMR.
Call Flows
The external IVR-controlled Entry Queue can be initiated for various types of calls from SIP endpoints such 
as standalone endpoints and Cisco TIP endpoints. Standalone endpoints are SIP or H.264 TIP endpoints. 
These endpoints can include HDX systems, multiple Telepresence (ITP) screens, and RealPresence 
Desktop client applications.
Call Flow for Standalone SIP Endpoints
The following describes how a standalone SIP endpoint call is placed into the IVR-controlled Entry Queue 
and is then connected to a conference:
A SIP call is routed through the application server to the IVR-controlled Entry Queue.
The MCU answers the call and waits for the IVR media file requests from the application server. The 
MCU does not control the call while the call is in the Entry Queue.
The application server may request, through the MCCF channel - IVR package, to play an audio file 
and display a slide. When the audio file has finished playing, the MCU notifies the application server 
that the audio file has been played for the call.
The application server may request, through the MCCF channel - IVR package, to collect DTMF 
input such as a conference ID or password, from the caller. The DTMF input is transferred from the 
MCU to the application server. When the application server receives the DTMF input, it validates the