Multicast Configuration - CyberData SIP PAGING ADAPTER Configuration Manual

RING CENTRAL CONFIGURATION GUIDE: SIP PAGING ADAPTER (SPA)
Doc. 931050B Page 48

8.0 Multicast Configuration

This section documents multicast configuration for industry standard multicast transmissions
using the CyberData V3.1 Paging Server and Polycom's proprietary paging solution using
Polycom IP phones running UC Software 4.0.0 and higher. Please be advised it is not
necessary to register the SPA's paging extension with RingCentral to use multicast. The SPA
can operate in SIP mode, multicast mode, or both modes simultaneously.
When using multicast audio sources for IP paging, the most important configuration details are
the multicast IP address and port number for a particular paging group. Each paging group
consists of a unique multicast IP address and port number.
As described in Multicast Audio Sourcing in Section 3.0 "Installation Options" on page 9, each
configured paging group is priority-based and allows you to designate higher priority groups for
emergencies or page-all broadcasts that will preempt lower priority groups like background
music.
To begin, identify how many paging groups will be needed. Be sure to consider which paging
groups will take a higher priority. Any SIP calls, such as those used to send pages to
RingCentral Paging Only groups, will take priority level 4.5.
Polycom Group Paging
First, it is important to note the default port number used by Polycom phones is an odd-
numbered port. While industry standard multicast transmissions use even-numbered ports in
conformance with RFC 1889, the CyberData V3.1 Paging Server can be configured to transmit
to an odd numbered port for Polycom paging interoperability. Similarly, the CyberData SIP
Paging Adapter (SPA) can be configured to receive multicasts from Polycom sources using an
odd-numbered port.
This configuration guide uses the default Polycom multicast IP address and odd-numbered port
224.0.1.116:5001.
CyberData V3.1 Paging Server Multicast Paging
The CyberData V3.1 Paging Server is the most popular industry standard multicast audio source
for IP paging solutions. A single phone call to the V3.1 Paging Server's extension can reach all
paging-capable devices on your network and overhead speakers at the same time. For more
information about integrating a V3.1 Paging Server with RingCentral, please see the V3.1 Paging
Server – RingCentral Configuration Guide.
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