Losing Dial Limits when placed into meetme conference

I have an application where I am placing one user who called in into a meetme conference and then dialing out to another phone number and placing them into the same conference so they can talk. Both are SIP calls. I am specifying limits on the dial out so that the called party is dropped after x msec with a 1 minute warning. If I do not put them in a meetme conf and they talk directly, the limits work, but do not when the calls are in meetme.

Is there a way to get this to work using the dial limits or another way to end the conference after a certain time has elapsed?


Ast 1.4.4