Why don’t u reduce the values of RLINK UP & RLINKT to 16. At present these values have been set very high, which means the calls are not being disconnected by either BSC or MS even when they are not able to decode SACCH for a fairly a long time, resulting in call drops.
We haven’t implemented the feauture of call set up through TCH, so I don’t have any practical data to share. But the feature exists in Ericsson BSCs. Any way it shouldn’t load the BCCH.