Has anyone interfaced Freeswitch with any of the Grandstream ATAs?&nbsp; If so, are there any issues that a user needs to be aware of, prior to install?&nbsp; I have a customer who is installing Freeswitch with a Grandstream ATA and interfacing that to an Avaya PBX.&nbsp; Any heads up on potential issues would be greatly appreciated.<br>
<br>Jonathan<br><br>