[Freeswitch-users] how to send messages to all members in a conference via freeswitch?

Hi All: I'm using Linphone as my VOIP client, i want 1 member to send instant messages to the conference and all other members in the conference should receive them. I can't figure out a way to do this, Linphone only allows to send messages to other members on the contact list, even if Linphone can do it, can freeswitch handle this?