We already have an IPBX (AAStra ASX) for VOIP.
This IPBX gathers a T2 line.
We want to use the IPBX for Analogic Line and a FOIP solution (virtual machine) to send/receive fax by email (we are using MS Exchange 2010).
Is there any Open Source Solution for Foip ?
Is it possible to "trunk SIP" my IPBX with this solution ?