[Freeswitch-users] Multiple endpoints bridge issue

I am using bridge via mod_httapi to call multiple endpoints via an xml response like this: <document type="text/freeswitch-httapi"><work><execute application="bridge" data="user/xxxxx1,user/xxxxx2,user/xxxxx3" /></work></document> What I notice is that this works for one or two connected endpoints. But once there are three or four endpoints, other incoming calls drop. I changed to enterprise originate (i.e, :_:) and noticed that once a call is engaged, other calls don't come in till that one ends. Same if I separate users with pipe (user/xxxxx1|user/xxxxx2|user/xxxxx3). Even when I bridge just a user at time, <execute application="bridge" data="user/xxxxx1" /> the other calls drop once one is engaged. What am I missing?