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When on an active call, and a second call is received, you can "join" both lines into a conference call.
To Activate
While on an active call, a second call comes into your line. You can press the Answer soft key to answer the second call. This places the first caller on hold. If you want to join the call, press the Confrn soft key once to initiate the conference, then again to connect the two calls together.
