Our local telco installed a Yealink voip system. After the install we noticed we lost disconnect supervision and attended transfer capabilities. Our local telco is saying that the ATA device (Yeastar model NeoGate TA800) they installed to our system doesn’t support disconnect supervision or attended transfers.
I am looking for an ATA device that is compatible with our Asterisk - Yealink system that supports disconnect supervision & attended transfers.
Any help would be greatly appreciated.