We've found that we can get the same effective behaviour as 'alternate' by simply retrieving the held call during a consult. This seems to automatically swap the held/active status of the related consult call.
Original Call - Held, Consult Call - Active.
Make a retrieve request on the held call (i.e. Original call)
Results in: Original Call - Active, Consult Call - Held
Make a retrieve request on the held call (i.e. Consult call)
Results in: Original Call - Held, Consult Call - Active.
Assume this is expected behaviour and not just a side-effect we are taking advantage off? Didn't see this example explicitly called out in the developer's guide so just wanted to confirm we're not doing something that may not be stable into the future.
You are right that you can just retrieve the held call, I didn't think of that when originally responding. Since the line can only be on one call, the only option for ucm is to hold the other call. This is expected behavior and it is a UCM behavior versus a Finesse behavior.