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Music on Hold - Cisco Unified - Cisco Certified Expert
https://www.ccexpert.us/cisco-unified/music-on-hold.html#:~:text=Multicast%20MoH%20streams%20are%20point-to-multipoint%2C%20one-way%20audio%20RTP,the%20same%20audio%20source%20stream%20to%20provide%20MoH.
PushToTalk audio and multicast
https://singlewirecommunity.force.com/s/article/PushToTalk-audio-and-multicast
With InformaCast, the multicast audio is sourced from the server instead of the phone. Resolution You should work directly with your network vendor or consulting partner to troubleshoot and/or configure multicast routing. Push-To-Talk will use a different multicast address than the one that is used for InformaCast Broadcasts.
What Is Multicast Networking and How Does It Work?
https://www.auvik.com/franklyit/blog/multicast-networking/
When the source device starts sending its multicast packets, the first router, on the same segment as the source, picks up that packet and forwards it to the RP router. This first step, which is called “registration,” is done using unicast. The first hop router already knows the address of the RP.
Feature Configuration Guide for Cisco Unified ...
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/11_5_1/featureConfig/CUCM_BK_C7DC69D3_00_cucm-feature-configuration-guide_115/CUCM_BK_C7DC69D3_00_cucm-feature-configuration-guide_115_chapter_0101110.html
The external multicast RTP stream uses G.711 mu-law codec for MOH as a source for G.711 mu-law or a-law or L16 256K wideband MOH codecs. For G.711 a-law and wideband calls, Cisco Unified Communications Manager MOH server transcodes the inbound G.711 mu-law stream to outbound G.711 a-law or wideband stream before sending it to the device.
Multicast Audio Server - Multi channel broadcast audio ...
https://www.audiotxmultiplex.com/features_audiotxmultiplex_server.html
You'll find that a bitrate of 64kbits (mono) or 128kbits (joint stereo) is near-equivalent to good FM broadcast quality for most audio programmes using MP3 compression. Each audio channel is 'broadcast' using a technique called Multicast - this means you only generate a small, fixed amount of network traffic regardless of how many people are tuned in.
multicast audio free download - SourceForge
https://sourceforge.net/directory/?q=multicast%20audio
The smartCast.org project provides MP3 multicast audio streaming server, extended by simple RTCP statistics and SAP announcements. There are two version: simpleCast is a command-line single-stream server, smartCast is a multi-stream daemonized streamer. Downloads: 0 This Week. Last Update: 2013-04-24.
UCM MoH Multicast Address Ordering for Audio Sources - Cisco
https://community.cisco.com/t5/ip-telephony-and-phones/ucm-moh-multicast-address-ordering-for-audio-sources/td-p/1544347
The MoH server specifies a starting address (e.g. 239.1.1.1) and to increment by IP Address. It appears that the base address is choosen for the highest numbered multicast-enabled audio source. For example, if UCM has two sources enabled for multicast, source one (1) will choose 239.1.1.5 while source two (2) will choose 239.1.1.1.
Music on Hold - Cisco Unified - Cisco Certified Expert
https://www.ccexpert.us/cisco-unified/music-on-hold.html
This results in each multicast audio source having a unique IP address and helps to avoid network saturation. All MoH audio sources that have been configured to allow multicasting are listed in the Selected Multicast Audio Sources section of the MoH Server Configuration window. Each audio source can have a different Max Hops value (default is 2).
Multicast traffic and IGMP - Biamp Cornerstone
https://support.biamp.com/General/Networking/Multicast_traffic_and_IGMP
Multicast trees require a root, branches and leaves. The hardware equivalent would be the source of the multicast stream (Root). The source will send its traffic into the network to a multicast address. The source does not have any knowledge of the hosts that want to listen or receive the stream it sends.
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