[Prob]Accessing serial port send AT command

[debasishgang7]

Hi all,i can send AT commands to my phone(over Bluetooth) using Hyper Terminal.I am trying to do the same process using python.So here is my code:

import time
import serial

# configure the serial connections (the parameters differs on the device you are connecting to)
ser = serial.Serial(
	port='COM8',
	baudrate=2400,
	parity=serial.PARITY_NONE,
	stopbits=serial.STOPBITS_ONE,
	bytesize=serial.SEVENBITS
)

#ser.open()
ser.isOpen()
ser.write("AT")
out = ''
# let's wait one second before reading output (let's give device time to answer)
time.sleep(1)
while ser.inWaiting() > 0:
	out += ser.read(1)
if out != '':
        print ">>" + out

The prog. has no error but the problem is when i send AT command using Hyper terminal i get OK back.But i this case i am getting The same AT command back.If send different command the Phone is replying with the same.

So,Please help me out....