<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Verdana; font-size: 10pt; color: #000000'>This probably isn't of much help/use, but I'm pretty sure this is similar to what paging solutions do. Essentially, they start a multi-cast stream, subscribe all the phones to it, start playing the multi-cast stream, then they unsubscribe the phones from the stream, then stop the stream (or something like that).<br><br>If your source can use the same multi-cast IP address, then it shouldn't be difficult (not that I could do it) to use the SDK below to allow a user to subscribe to that stream using a button.<br><br>Just throwing that out there. <br><span><br><span name="x"></span>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)<br>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>Cooking with unix is easy. You just sed it and forget it. <br> - LFJ (with apologies to Mr. Popeil)<br><span name="x"></span><br></span><br><hr id="zwchr"><b>From: </b>"Tim Reimers" <treimers@ashevillenc.gov><br><b>To: </b>cisco-voip@puck.nether.net<br><b>Sent: </b>Tuesday, April 24, 2012 4:17:07 PM<br><b>Subject: </b>[cisco-voip] Streaming multicast audio source to an IP phone<br><br><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:1687749174;
mso-list-type:hybrid;
mso-list-template-ids:396267510 -813545748 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l0:level1
{mso-level-start-at:14;
mso-level-number-format:bullet;
mso-level-text:-;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Calibri","sans-serif";
mso-fareast-font-family:Calibri;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">Hi everyone-</p><p class="MsoNormal"> </p><p class="MsoNormal">I’m researching how to possibly do something with IP phones and multicast—</p><p class="MsoNormal"> </p><p class="MsoNormal">We want to stream audio from meetings in a very plug-and-play user-friendly way,</p><p class="MsoNormal">to IP phones and also PCs on the network.</p><p class="MsoNormal"> </p><p class="MsoNormal">I will be locating some type of hardware that can be connected to the line out of an audio system to pick up the audio, and provide a </p><p class="MsoNormal">multicast stream. </p><p class="MsoNormal">The multicast stream will NOT be coming from an IP phone – </p><p class="MsoNormal">It will be something like a PC with VLC loaded on it, or with proof of concept to get some funding, I might use a VBrick or something like that.</p><p class="MsoNormal"> </p><p class="MsoNormal">We want it to be a black box that a non-technical user can just switch on along with the audio system for the meeting room, and streaming </p><p class="MsoNormal">will automatically begin.</p><p class="MsoNormal"> </p><p class="MsoNormal">On the receive side, we want users to be able to listen to the stream on an IP phone or a PC, without having to</p><p class="MsoNormal">do much more than select a service or dial a number on the system, or click a link with a PC.</p><p class="MsoNormal"> </p><p class="MsoNormal">This is a one-way listen to the meeting; there is no need or requirement for audio from the client side, so the IP Phone should automatically go into speakerphone mode with mute, or allow audio to handset/headset</p><p class="MsoNormal"> </p><p class="MsoNormal">I have seen the below from the IP Phone SDK – I don’t know if I could leverage that into a service that is </p><p class="MsoNormal">pre-programmed to join a multicast “conference” (aka audio stream, for my purposes) </p><p class="MsoNormal">on a known multicast IP.</p><p class="MsoNormal"> </p><p class="MsoNormal">Thanks for any advice you guys have! </p><p class="MsoNormal"> </p><p class="MsoNormal">I know sometimes I forget to come back in here and thank you for times you give me great assistance-</p><p class="MsoNormal">Along those lines, major thanks to Peter Snow and others who assisted me with</p><p class="MsoNormal">echo cancelling questions and PRI setup! </p><p class="MsoNormal"> </p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><i><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">14. MConference (JSP)</span></i></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif""></span></p><table class="MsoNormalTable" style="width:100.0%;border-collapse:collapse;border:none" border="1" cellpadding="0" cellspacing="0" width="100%"><tbody><tr><td style="width:22.0%;border:inset #111111 1.0pt;padding:0in 0in 0in 0in" width="22%"><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><img src="cid:image001.gif@01CD2233.4A32EBA0" id="Picture_x0020_1" height="100" width="160"></span><span style="font-size:12.0pt;font-family:"Times New Roman","serif""></span></p></td><td style="width:78.0%;border:inset #111111 1.0pt;border-left:none;padding:0in 0in 0in 0in" width="78%"><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">MConference is a sample application which allows users to create, join, and control IP multicast conferences<br>from an XML phone service. It's a good example of the power of XML services and IP multicast - providing a large-scale (thousands of participants), arbitrated conference using a simple web application.<br>Conference arbitration can be enabled/disabled by the conference owner. When arbitration is enabled participants must request permission which is then granted by the conference owner. When conference arbitration is disabled, participants can simply push-to-talk, similar to a hoot-and-holler network.</span></p></td></tr></tbody></table><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> </span></p><p class="MsoNormal"> </p><p class="MsoNormal"> </p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div><br>_______________________________________________<br>cisco-voip mailing list<br>cisco-voip@puck.nether.net<br>https://puck.nether.net/mailman/listinfo/cisco-voip<br></div></body></html>