What protocol does air play use

I have purchased a Marantz MCR603 which is airplay enbabled but airplay keeps dropping out. I have been advised by both Apple and Marantz that my BTHomhob (3.0, the latest) does not support airplay protocols. BT,as usual, have no idea what I'm talking about. Can anybody advise?

AirPlay is an Apple propriety protocol stack and is based on the RTSP network control protocol. An AirPlay device, such as your Marantz, would have to work with one or both of the following two services: ROAP used for audio streaming, and AirPlay for video/photo content.
ROAP uses TCP port 49152 and AirPLay uses TCP port 7000. Note: These ports would not need to be opened on your home router as all streaming is being done on the local network, but both the Marantz and the iTunes host device must be able to open these ports to communicate.

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[Ref 1] B. McCullough, B. Wilson. On the Accuracy of Statistical Procedures in Microsoft Excel 97.
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http://users.df.uba.ar/cobelli/LaboratoriosBasicos/excel97.pdf
[Ref 2]L. Knüsel. On the accuracy of the statistical distributions in Microsoft Excel 97. Computational Statistics & Data Analysis. Vol. 26 No. 3, pp 375-377. January 1998.
http://www.sciencedirect.com/science/article/pii/S0167947397817562
[Ref 3]B. McCullough, B. Wilson. On the Accuracy of Statistical Procedures in Microsoft Excel 2000 and Excel XP.
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http://www.pucrs.br/famat/viali/tic_literatura/artigos/planilhas/msexcel.pdf
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[Ref 6]B. McCullough, D.Heiser. On the Accuracy of Statistical Procedures in Microsoft Excel 2007.
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http://www.sciencedirect.com/science/article/pii/S016794730800162X
[Ref 9] G. Melard. On the Accuracy of Statistical Procedures in Microsoft Excel 2010. Computational Statistics. Vol.29 No. 5, pp 1095-1128. October 2014.
http://homepages.ulb.ac.be/~gmelard/rech/gmelard_csda23.pdf
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Richard Mueller - MVP Directory Services

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"zhebincong" <[email protected]> wrote in message
news:3e7d2ed3$[email protected]..
>
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mlissner wrote:
Basically, what I want to know is what libraries and technologies Apple is using to generate previews for the formats that are native to OSX. I looked at the various developer pages, but couldn't find any hints there about what was in use.
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