Hi there,
I'm a longtime FPL user and have been running Asterisk virtualized for several years without issue. I wanted to add some redundancy so i decided to ditch virtualized Asterisk for a Yeastar S20 with a built in Cellular module to act as a failover for when the internet goes down.
The trunk and sip settings for the S20 seem a little different than any of the other PBXs' or ATAs i've I've configured in the past but I managed to get the device connected back to FPL.
Two problems: First,is inbound calls are drop approximately 32 seconds after the call is answered. Second, I don't hear the ringback tone when I make an outside call.
Please see screenshots of my current config from my S20 below.
Thank you in advance.