I am using FreePBX and having trouble with blind transfers on 38G phones. 48g phones work fine.
You hit transfer, dial the extension, hit transfer again and the call shows (Oh Hold) while it is transferred to the extension. When that call ends it returns a “Transfer Failed” to the original operator.
Transfer Settings on my 48g and 38g are identical.
Tested across several active FreePBX deployments with the same results. Using firmware 188.8.131.52