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<TITLE>Using presence or state to avoid intercom barge-in</TITLE>
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<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Hi,</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">We’re running into an issue with Cisco SPA50x phones where an intercom call to an extension either places the currently active call on hold or hangs up on it and switches to the intercom call. We’d like to not have this happen if the destination extension is in use.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">The only way I know of to do this would involve reconfiguring all of the phones to share presence and then check it in the dialplan before bridging. Is there a convenient “no-barge” variable or similar that can be set so FS won’t send the invite if the extension is in use or a way to check the extension’s state from the dialplan?</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> I</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">m guessing that</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">s a NO but I had to ask!</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Alternatively, is there a way to get the Cisco phones not to interrupt the call in progress when a call comes in? Instead of setting sip_auto_answer=true, I’ve also tried setting sip_h_Call-Info=<sip:ip.address.of.server>;answer-after=0 which appears to stop this behavior on the Aastra phones but not the Cisco phones, although I’m not entirely sure about this as I</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">now</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">can’t seem to reproduce the undesired behavior on the Aastra phones.</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">..</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Dialplan entry</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">for the intercom as it stands</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">is as follows:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"><extension name="extension-intercom-fix" continue="true"></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"> <condition field="destination_number" expression="^\*8(\d{2,7})$" ></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"> <action application="set" data="dialed_extension=$1" /></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"> <action application="bridge" data="user/${dialed_extension}@${domain_name}" /></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"> <action application="export" data="sip_auto_answer=true" /></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"> </condition></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri"></extension></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Any thoughts or advice would be appreciated. Thanks!</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><I></I></SPAN><SPAN LANG="en-us"><I></I></SPAN><I><SPAN LANG="en-us"></SPAN></I><I><SPAN LANG="en-us"><FONT FACE="Times New Roman">Phil Quesinberry</FONT></SPAN></I><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Q Systems Engineering, Inc.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Embedded Systems, Telecom, IT</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">(410) 969-8002</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><A HREF="http://www.qsystemsengineering.com/"><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><U></U></SPAN><U><SPAN LANG="en-us"></SPAN></U><U><SPAN LANG="en-us"><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">http://www.qsystemsengineering.com</FONT></SPAN></U><SPAN LANG="en-us"></SPAN></A><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN></P>
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