[Freeswitch-users] mod_conference pin

Hi All Using the web based conferencing software I am able to dial in (phone call) to conference using pin number. But the problem is sip client(voice conf) is also asking that same pin number. in dialplan confname@profile+[pin] or in profile <param name="pin" value="pin_number"> How should I set my dial plan so that only phone dialing asks the pin number. Thanks