Hi John, <div><br></div><div>From the data sheet the above model is compatible with 7900 and 6900 series which are SCCP phones. The 9900 series are SIP phones. See the discussion at 
<a href="https://supportforums.cisco.com/thread/2043179">this location</a> though it over an year old you will get the drift.</div><div><br></div><div>R</div><div><br></div><div>D <span id="goog_1662161051"></span><span id="goog_1662161052"></span><a href="/"></a><br>
<br>On Monday, February 6, 2012, Njiri John  wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Skunks<br><br>i have 9971 CISCO ip phones. does any one know if they are compatible with UC 560?<br>
<br>regards<br>Njiri John<br>
</blockquote></div>