Operation not allowed

Version 1
    This document was generated from CDN thread

    Created by: Sergei Gorbunov on 20-07-2012 12:52:34 AM
    There is a scenario:
     
    1. There is a conference with lines A, B (cisco terminals) and C (CTI port controlled by application).
    2. Line A make transfer to external line D.
    3. Via JTAPI test tools trying to disconnect connection D, result:
     

    <pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333; line-height: 13px; text-align: left;"><pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333;">com.cisco.jtapi.InvalidStateExceptionImpl: Operation not allowed
    at com.cisco.jtapi.ConnectionImpl.disconnect(ConnectionImpl.java:701)</pre>
    </pre>
    <pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333; line-height: 13px; text-align: left;">4. Line B disconnects from conference.</pre>
    <pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333; line-height: 13px; text-align: left;">5. Via JTAPI test tools trying to disconnect connection D - connection successfully disconnects.</pre>
    <pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333; line-height: 13px; text-align: left;">
    </pre>
    <pre class="code-java" style="margin: 0px; padding: 0px; font-family: monospace; font-size: 1.2em; color: #333333; line-height: 13px; text-align: left;">Any suggections about why operation not allowed?</pre>