<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Malcolm,<div><br></div><div>Blink was designed to work against IETF based SIP implementations.<div><br></div><div>Related to the setup of the fixed IP address question, people who do need such thing they also need many other things as well in practice. It is the pandora box of interoperability problems when you try to use a standards based solution against a custom setup environment with private VPN, custom network settings, and proprietary PBX extensions. What you solve in one site cannot be used in another where you bump into another type of problem.</div><div><br></div><div>As you see, the number of problems you are reporting increase by the day and the reasons are simply in your custom environment. For such environment your vendor must deliver something fine tuned for that environment. </div><div><br></div><div>Blink is meant to be used only on public internet against a public SIP server and not private corporate environments with custom PBX solutions, these solutions always need custom SIP device implementations.</div><div><br></div><div>Adrian</div><div><br></div><div><br><div>On Apr 30, 2010, at 8:52 AM, Malcolm Caldwell wrote:</div><div><div><div><div><div><div><br class="Apple-interchange-newline"><blockquote type="cite"><div> <font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">Hi Adrian,<br> <br> CISCO do claim to support third party SIP clients, and I have registered softphones against it in the past.<br> <br> I don’t know why in this case there is no SDP, and I will look into this further.<br> <br> <br> <br> <hr align="CENTER" size="3" width="95%"><b>From: </b>Adrian Georgescu <<a href="ag@ag-projects.com">ag@ag-projects.com</a>><br> <b>Reply-To: </b><<a href="blink@lists.ag-projects.com">blink@lists.ag-projects.com</a>><br> <b>Date: </b>Fri, 30 Apr 2010 08:47:57 +0200<br> <b>To: </b><<a href="blink@lists.ag-projects.com">blink@lists.ag-projects.com</a>><br> <b>Subject: </b>Re: [Blink] Digest user<br> <br> <br> On Apr 30, 2010, at 1:51 AM, Malcolm Caldwell wrote:<br> <br> </span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt"> Hi Adrian,<br> <br> I now have the log from my work, although the packets are not the same as I say yesterday. (I wish I had saved them). However, calls are not working, and this trace shows that:<br> <br> </span></font><font color="#3508FE"><font size="1"><font face="Helvetica, Verdana, Arial"><span style="font-size:9pt">RECEIVED:</span></font></font></font><font size="1"><font face="Helvetica, Verdana, Arial"><span style="font-size:9pt"> Packet 19, +0:03:05.878643<br> 2010-04-30 09:01:52.947054: SIP.SERVER.IP.ADDR:5060 -(SIP over UDP)-> MY.MAC.IP.ADDR:59181<br> </span></font></font><font size="2"><font face="Lucida Grande"><span style="font-size:10pt"><b>INVITE sip:<a href="fcuzryxa@MY.MAC.IP.ADDR:59181">fcuzryxa@MY.MAC.IP.ADDR:59181</a> SIP/2.0<br> </b></span></font></font><font size="1"><font face="Helvetica, Verdana, Arial"><span style="font-size:9pt">Date: Thu, 29 Apr 2010 23:31:54 GMT<br> Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY<br> From: <sip:<a href="YYYY@SIP.SERVER.IP.ADDR">YYYY@SIP.SERVER.IP.ADDR</a>>;tag=94d7ad56-fdc6-40a9-bd8e-772b8995b8b6-47099214<br> Allow-Events: presence<br> Supported: timer,resource-priority,replaces<br> Min-SE: 1800<br> Remote-Party-ID: <sip:<a href="YYYY@138.80.6.4">YYYY@138.80.6.4</a>;x-cisco-callback-number=YYYY>;party=calling;screen=yes;privacy=off<br> Content-Length: 0<br> User-Agent: Cisco-CUCM7.0<br> To: <sip:<a href="XXXX@MY.MAC.IP.ADDR">XXXX@MY.MAC.IP.ADDR</a>><br> Contact: <sip:<a href="YYYY@SIP.SERVER.IP.ADDR:5060">YYYY@SIP.SERVER.IP.ADDR:5060</a>>;video;audio<br> Expires: 180<br> Call-ID: <a href="63b1d680-bda116ea-b7-406508a@SIP.SERVER.IP.ADDR">63b1d680-bda116ea-b7-406508a@SIP.SERVER.IP.ADDR</a><br> Via: SIP/2.0/UDP SIP.SERVER.IP.ADDR:5060;branch=z9hG4bKc721379491<br> CSeq: 101 INVITE<br> Send-Info: conference<br> Max-Forwards: 70<br> Alert-Info: <file:<font color="#F99417">//Bellco</font>re-dr1/><br> </span></font></font></blockquote><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt"><br> There is no SDP with any type of supported media in this Invite.<br> <br> You are using Blink against a non-standard compliant corporate PBX solution that works only with approved phone devices by Cisco.<br> <br> What do you want to see happening except rejecting it?<br> <br> Adrian<br> <br> <br> <hr align="CENTER" size="3" width="95%"></span></font><font size="2"><font face="Consolas, Courier New, Courier"><span style="font-size:10pt">_______________________________________________<br> Blink mailing list<br> <a href="Blink@lists.ag-projects.com">Blink@lists.ag-projects.com</a><br> <a href="http://lists.ag-projects.com/mailman/listinfo/blink">http://lists.ag-projects.com/mailman/listinfo/blink</a><br> </span></font></font> </div> _______________________________________________<br>Blink mailing list<br><a href="mailto:Blink@lists.ag-projects.com">Blink@lists.ag-projects.com</a><br><a href="http://lists.ag-projects.com/mailman/listinfo/blink">http://lists.ag-projects.com/mailman/listinfo/blink</a><br></blockquote></div><br></div></div></div></div></div></div></div></body></html>