thanks a lotta for the reply.i need t discuss more with you on this topic ,i still has some confusions..
1> Abis can carry 64 Full rate(16 kbps) ,128 half rate(8 kbps) calls provided no TS is allocated for DATA on TRX??????
2>Abis has some free TS .when EDGE /GPRS occupy extra TS on abis ,are these time slots are FREE TS??????
3>In general wat is structure of Abis interface with all EDGE/GPRS/HR/FR configruation???