Conference with analog trunks

[iroba]

I'm trying to make a simple conference with analog trunks but I can only add two lines to my conversation, when i try to add a third line the conference button doesn't work, it just let this call in hold. I tested with 2.1.31 and 3.0.40

Is there a limit in a conference with just analog lines??? or the ipo has problems with loop start lines???

 

[mforrence]

The IP Office limits conference calls to two analog trunks. You can have up to 64 digital trunks in a conference...

MIKE