The following complex call scenario illustrates when a station user adds an incoming call to an existing conference.

In this scenario,

1. Phones I, II, and III are in the same conference call with UCID x.

2. The person at Phone III receives an incoming call from Phone IV (this call has UCID y associated with it).

   

3. The person at Phone III puts the conference call on hold and answers the incoming call from Phone IV.

4. The person at Phone III decides to add Phone IV into the conference call.

5. The person at Phone III

   1. presses the Conference button

   2. presses the call appearance button to return to the conference call

   3. presses the Conference button again.

      This brings the conference call into the call between Phones III and IV.

6. UCID y overrides UCID x because the communication server views Phone IV as the primary party in the conference initiated by Step 5.

   

7. The UCIDs associated with each segment of the complex conference are sent to CMS if the parties in the call are measured (for this example, if the parties are ACD agents in a measured split or skill).