Its a trivial thing to setup failover from one SIP trunk to another or to a PSTN line in the event that there is a failure in connectivity. That's obvious. But what about in the event that a trunk is still up, but suffering from high latency, jitter, packet loss, etc? Is anyone looking at the quality of a connection rather than a binary status of up or down? It seems to me that it should not be that difficult to accomplish and is probably a more useful way of determining whether a trunk should failover or not.