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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">With contact closure, you use a pair of wires to create a loop to signal a channel open, and a separate pair of wires to carry the audio (traditional tip and
ring pair). You cannot do this without an adaptor. The best way I have found is to use a bogen tam-b or a pagepal, connected to an FXO port.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Eric Butcher<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Calibri","sans-serif";color:black">Cisco Unified Communications Engineer</span></b><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><br>
</span></b><b><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:red">CDW</span></b><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray"> Professional Services</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray">11711 N Meridian, Ste 225</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray">Carmel, IN 46032<br>
</span><span style="font-size:10.0pt;font-family:Wingdings;color:black">(</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:black"> 317.569.4282 - IP Phone<br>
</span><span style="font-size:10.0pt;font-family:Wingdings;color:black">(</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:black"> 765.744.1458 - Mobile<br>
</span><span style="font-size:10.0pt;font-family:Wingdings;color:black">*</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:black">
<a href="mailto:eric.butcher@cdw.com"><span style="color:blue">eric.butcher@cdw.com</span></a></span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://www.cdw.com/"><span style="color:blue">http://www.cdw.com/</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>David Zhars<br>
<b>Sent:</b> Tuesday, November 23, 2010 1:11 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Dry Closure Phones<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">An app we are installing at our Police Dept requires the phones to have a "dry closure" contact or something like that.<br>
If I google this, I see a Dry Closure thing for 2600/3600 series, so I am researching that.<br>
Do any phones supported by CCM 8 support dry closure? Ultimately, I want the phones to work with SRST, so I probably don't want to stray too far from the Cisco wagon...<br>
<br>
Appreciate any insight.<o:p></o:p></p>
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