I'm trying to set up a situation where an Inbound Call Flow transfers to a registered SIP extension (which is not part of a queue) and if that fails (e.g. busy, unregistered) then the Inbound Call Flow detects a transfer failure and then does something else with the call.
Right now a transfer to a busy or unregistered SIP extension just gets a TTS sounding prompt "Voicemail is not available for " and then hangs up the call which isn't very useful at all for the caller. The Inbound Call Flow logic always gets the success exit from the transfer even though a failure path is available.
Is there any way to configure behavior so that an Inbound Call Flow can detect a transfer failure for a transfer to SIP extension that doesn't have voicemail enabled?
My view is that having the ability to detect that an extension without voicemail being not contactable should be able to be handled by Inbound Call Flow logic (like playing a prompt or trying another extension or transferring to a queue).