Call control also goes over IP through a separate socket, and interfaces with the VoiceBridge board to do call control. VoiceBridge tells the PBX that this extension is off-hook. Through VoiceBridge, the switch sends the browser-phone a dial tone. Having explained all that, Dylag then admits that the RAS-imbedding model appears to hit a snag when offered to the market. Pods don't compete for CPU time with other applications.
Pods are upgradeable through software downloads.
Pods are configured at much higher levels, free of interrupt conflicts and base address concerns.