1. Extension 201 Ringing
2. Extension 202 dial **201 and pickup the call
3. Extension 203 Dial **201
4. Extension 203 steel the call which is connected to 202.
I am using Default Dial plan application
<!-- Call Pickup -->
<extension name="intercept-ext">
<condition field="destination_number" expression="^\*\*(\d+)$">
<action application="answer"/>
<action application="intercept" data="${hash(select/${domain_name}-last_dial_ext/$1)}"/>
<action application="sleep" data="2000"/>
</condition>
</extension>
Thank you