I just got an email from APRSDepot about their new project regarding AVRS
“When you send the command to APRSDEPOT like 'C [CALLSIGN-SSID]' (Example: 'C N6GOF-1' where N6GOF-1 is the party you want to reach) the system will automatically determine the IRLP Nodes that are nearest to the two parties (You and N6GOF-1 in the example above). Once that is determined it will then send messages to both parties with details on how to get interconnected (Node details for each party respectivley). In the event that the party your searching for has NOT been heard in the last 60 minutes, you will get an advisory message.”
This seems like a great idea… but not necessarily the most efficient. It would be great if APRS were some how extended to provide people (optionally of course) with the frequency the other user was on. This would allow people to use repeaters or simplex to communicate, instead of tying up a IRLP node. Regardless, this is certainly a step in the right direction.