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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Appendix 6 – Special Operational Modes 318

STREAMING MODES

DependingontheInterfaceselectedintheTELmenu,theXstreamsstreamingworksdifferently.

Hereisareviewofthedifferentoptions:

HTTP

ThefamiliarPull‐OnlyHTTPremains,howeverwestronglyrecommendtheuse

ofoneofthefollowingRTPbasedoptions.TheZephyrisstillaserveronly,nota

client.HTTPstreamingisusedpri

marilywithdesktopplayers(Audioactive

Player,WinAmp,etc.)forconfidenceaudio.Itisnottobeusedonthepublic

internetduetolimitationsintheZephyr'sTCPstack.Iflong‐range/long‐term

HTTPstreamingisrequired,aShoutcastServer(orotherstreamreplicator)can

beuse

dasaclient.

RTP/UDP

Real‐TimeProtocolstreamsarePush‐only.Oneservercansendtoseveral

clients,whodecodetheaudioiftheyarealsoinRTPstreamingmode.RTPisa

transportprotocol,notaconnectionprotocol,whichiswhyitworksinthisway.

The"connectionprotocol"istheuserhittingtheDialbutton

.

SIP

UnlikeRTP,SIPisaconnectionprotocol,notatransportprotocol.SIP

negotiatesabi‐directionalconnectionbetweenthetwounits,behavingmuch

likeatelephoneorISDNcall.Progressisrelatedtothefarsideaswellasthe

localuser.Th

efarendunitmaybereportedasbusy(unlikeRTP,whichsends

regardlessofthereadinessofthereceiver),etc.

SIPusesRTPasitstransportprotocol.Whatthismeans,basically,isthatSIP

negotiatesforeachsideoftheconnectiontosendanRTP,push‐onlystreamto

theotherside.Theresultisabi‐dir

ectionalconnection.

PORTS(IPPORT)

EachIPdevicemusthaveanIPaddress.However,eachIPaddresscanhandle

multipleconnections,usingdifferentports.Sortoflikedifferentextensionson

thesameofficetelephonesystem.

IPportstobeusedbythestreamingsystemarelistedontheTel

coconfiguration

pageinallmodes.



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