"1- how can i use this feature [tone detection] to detect that the phone call(by generating DTMF signals) i made through this chip has been received by the B-Party on the other end"

Do you mean the B-Party sends some DTMF sequence when it answers?
In that case, you need a DTMF receiver, not a call-progress monitor.

Otherwise, I don't think there is any guaranteed indication of when the call has been answered [1]
Some telcos might give you a line-reversal.

"2- How can i detect various other tones likes Busy signal, Noraml telephone tone or B Party telephone ringing tone."

You would have to determine the frequency & cadence patterns of the call-progress tones for your telco, and program the chip accordingly.
Over here, this is getting less reliable, as the telcos are using more recorded anouncements instead of tones :-(


[1] this is why consumer plug-in analogue-line call meters are not usually very accurate: they just can't tell when the call is actually answered (ie, when the telco starts charging)