<div><br></div>I'm thinking about doing a project that would use FreeSWITCH as an IVR, with callers being routed in by both ISDN PRI, and also SIP trunks, with occasional bridge calls between callers.<div><br></div><div>
I'm wondering in what use cases hardware echo cancellation on the PRI cards is needed. And does hardware echo cancellation work with OpenZap/FreeSWITCH? </div><div><br></div><div>It looks like all the major cards (Sangoma, Digium, etc..) use Octasic Echo cancellation add-on cards. Is there any difference between brands?</div>
<div><br></div><div>Any recommendations on PRI boards and whether I need to pay for echo cancellation are appreciated</div><div><br></div><div>Thanks.</div><div><br></div><div>Tony</div><div><br></div>