SIr,

Now can some one please help me out on the issue of Pulse Dialing...

like for DTMF iam using MT3271 which decode the number .

But for Pulse Dialing can i use the same off-hook detection path to sent Pulses of dialing to controller using the theory that if "1" is pressed 1 pulse goes to controller if "2" is pressed 2 pulses...and if 0 is pressed then 10 pulses...
For this can i use :-

MOV R0,#0D ; "initial value in Pulse Counter Register"

AGAIN:
JB P1.0,$ ;waiting for pulses to come on the same bit where off-hook is detected
Inc R0
JNB P2.1,$ ;waiting for low
CJNE R0,#02D, AGAIN ; "detecting whether the dialed number is 2 or not, if 2 then its desired function is done other wise controller wait for pulses"
SJMP MT8816_ADDRESS

is it only software that is matter or should hardware is also needed for detecting Pulse Dialing
any suggestions how to detect pulse dialing...