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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def startCc(CallControlCapabilities_presence=0):
 """START CC Section 9.3.23a"""

    a = TpPd(pd=0x3)
    b = MessageType(mesType=0x9)  # 00001001
    packet = a / b
    if CallControlCapabilities_presence is 1:
        c = CallControlCapabilitiesHdr(ieiCCC=0x15, eightBitCCC=0x0)
        packet = paclet / c
    return packet